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><channel><title>Natural Sciences Bibliography &#187; Precolumn</title> <atom:link href="http://scien.net/category/chromatography/precolumn/feed" rel="self" type="application/rss+xml" /><link>http://scien.net</link> <description>205,000 References and 140,000 Tags</description> <lastBuildDate>Tue, 21 May 2013 03:34:42 +0000</lastBuildDate> <language>en-US</language> <sy:updatePeriod>hourly</sy:updatePeriod> <sy:updateFrequency>1</sy:updateFrequency> <generator>http://wordpress.org/?v=3.5.1</generator> <item><title>Quantification of Frankia strains and other root-associated bacteria in pure cultures and in the rhizosphere of axenic seedlings by high-performance liquid chromatography-based muramic acid assay</title><link>http://scien.net/chromatography/precolumn/quantification-of-frankia-strains-and-other-root-associated-bacteria-in-pure-cultures-and-in-the-rhizosphere-of-axenic-seedlings-by-high-performance-liquid-chromatography-based-muramic-acid-assay</link> <comments>http://scien.net/chromatography/precolumn/quantification-of-frankia-strains-and-other-root-associated-bacteria-in-pure-cultures-and-in-the-rhizosphere-of-axenic-seedlings-by-high-performance-liquid-chromatography-based-muramic-acid-assay#comments</comments> <pubDate>Tue, 21 May 2013 02:58:38 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[acidcell]]></category> <category><![CDATA[agglomerans]]></category> <category><![CDATA[frankia]]></category> <category><![CDATA[griseoviridis]]></category> <category><![CDATA[muramic]]></category> <category><![CDATA[polymyxa]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/quantification-of-frankia-strains-and-other-root-associated-bacteria-in-pure-cultures-and-in-the-rhizosphere-of-axenic-seedlings-by-high-performance-liquid-chromatography-based-muramic-acid-assay</guid> <description><![CDATA[Ronkko, R; Pennanen, T; Smolander, A; Kitunen, V; Kortemaa, H; Haahtela, K., 1994: Quantification of Frankia strains and other root-associated bacteria in pure cultures and in the rhizosphere of axenic seedlings by high-performance liquid chromatography-based muramic acid assay. Applied and environmental microbiology 60(10): 3672-3678 Application of a high-performance liquid chromatography-based muramic acid assay with precolumn [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/quantification-of-frankia-strains-and-other-root-associated-bacteria-in-pure-cultures-and-in-the-rhizosphere-of-axenic-seedlings-by-high-performance-liquid-chromatography-based-muramic-acid-assay/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Measurement of dissolved free and combined amino acids in unconcentrated wastewaters using high performance liquid chromatography</title><link>http://scien.net/chromatography/precolumn/measurement-of-dissolved-free-and-combined-amino-acids-in-unconcentrated-wastewaters-using-high-performance-liquid-chromatography</link> <comments>http://scien.net/chromatography/precolumn/measurement-of-dissolved-free-and-combined-amino-acids-in-unconcentrated-wastewaters-using-high-performance-liquid-chromatography#comments</comments> <pubDate>Mon, 20 May 2013 02:19:12 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[clarifier]]></category> <category><![CDATA[dcaa]]></category> <category><![CDATA[dfaa]]></category> <category><![CDATA[dtaa]]></category> <category><![CDATA[phthaldialdehyde]]></category> <category><![CDATA[trickling]]></category> <category><![CDATA[unconcentrated]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/measurement-of-dissolved-free-and-combined-amino-acids-in-unconcentrated-wastewaters-using-high-performance-liquid-chromatography</guid> <description><![CDATA[Confer, David R.; Logan, Bruce E.; Aiken, Brian S.; Kirchman, David L., 1995: Measurement of dissolved free and combined amino acids in unconcentrated wastewaters using high performance liquid chromatography. Water Environment Research. 67(1): 118-125 Dissolved free amino acids (Dfaa) and dissolved combined amino acids (Dcaa, e.g., discrete dissolved polypeptides and proteins as well as amino [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/measurement-of-dissolved-free-and-combined-amino-acids-in-unconcentrated-wastewaters-using-high-performance-liquid-chromatography/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Improvement of chemical analysis of antibiotics. 2 Simultaneous determination of three polyether antibiotics in feeds using high-performance liquid chromatography with fluorescence detection</title><link>http://scien.net/chromatography/precolumn/improvement-of-chemical-analysis-of-antibiotics-2-simultaneous-determination-of-three-polyether-antibiotics-in-feeds-using-high-performance-liquid-chromatography-with-fluorescence-detection</link> <comments>http://scien.net/chromatography/precolumn/improvement-of-chemical-analysis-of-antibiotics-2-simultaneous-determination-of-three-polyether-antibiotics-in-feeds-using-high-performance-liquid-chromatography-with-fluorescence-detection#comments</comments> <pubDate>Sun, 19 May 2013 04:27:31 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[bromoacetylpyrene]]></category> <category><![CDATA[derivatize]]></category> <category><![CDATA[develosil]]></category> <category><![CDATA[lambdam]]></category> <category><![CDATA[lambdax]]></category> <category><![CDATA[lasalocid]]></category> <category><![CDATA[methanolwater]]></category> <category><![CDATA[polyether]]></category> <category><![CDATA[prepacked]]></category> <category><![CDATA[salinomycin]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/improvement-of-chemical-analysis-of-antibiotics-2-simultaneous-determination-of-three-polyether-antibiotics-in-feeds-using-high-performance-liquid-chromatography-with-fluorescence-detection</guid> <description><![CDATA[Asukabe, H.; Murata, H.; Harada, K.; Suzuki, M.; Oka, H.; Ikai, Y., 1994: Improvement of chemical analysis of antibiotics. 2 Simultaneous determination of three polyether antibiotics in feeds using high-performance liquid chromatography with fluorescence detection. Journal of Agricultural and Food Chemistry 42(1): 112-117 A simultaneous determination of three polyether antibiotics (PEs), salinomycin, monensin, and lasalocid, [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/improvement-of-chemical-analysis-of-antibiotics-2-simultaneous-determination-of-three-polyether-antibiotics-in-feeds-using-high-performance-liquid-chromatography-with-fluorescence-detection/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>High-speed RP-HPLC/FL analysis of amino acids after automated two-step derivatization with o-phthaldialdehyde/3-mercaptopropionic acid and 9-fluorenylmethyl chloroformate</title><link>http://scien.net/chromatography/precolumn/high-speed-rp-hplcfl-analysis-of-amino-acids-after-automated-two-step-derivatization-with-o-phthaldialdehyde3-mercaptopropionic-acid-and-9-fluorenylmethyl-chloroformate</link> <comments>http://scien.net/chromatography/precolumn/high-speed-rp-hplcfl-analysis-of-amino-acids-after-automated-two-step-derivatization-with-o-phthaldialdehyde3-mercaptopropionic-acid-and-9-fluorenylmethyl-chloroformate#comments</comments> <pubDate>Sun, 19 May 2013 04:00:52 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[chloroformate]]></category> <category><![CDATA[fluorenylmethyl]]></category> <category><![CDATA[hplcfl]]></category> <category><![CDATA[mercaptopropionic]]></category> <category><![CDATA[reequilibration]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/high-speed-rp-hplcfl-analysis-of-amino-acids-after-automated-two-step-derivatization-with-o-phthaldialdehyde3-mercaptopropionic-acid-and-9-fluorenylmethyl-chloroformate</guid> <description><![CDATA[Bartok, T.; Szalai, G.; Lorincz, Z.; Borcsok, G.; Sagi, F., 1994: High-speed RP-HPLC/FL analysis of amino acids after automated two-step derivatization with o-phthaldialdehyde/3-mercaptopropionic acid and 9-fluorenylmethyl chloroformate. Journal Of Liquid Chromatography. 17(20): 4391-4403 This paper describes an automated high-speed Rp-Hplc/Fl method, including two-step precolumn derivatization with o-phthaldialdehyde/3-mercaptopropionic acid (Opa/3-Mpa) for primary amino acids and with [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/high-speed-rp-hplcfl-analysis-of-amino-acids-after-automated-two-step-derivatization-with-o-phthaldialdehyde3-mercaptopropionic-acid-and-9-fluorenylmethyl-chloroformate/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>High-performance liquid chromatographic method for the determination of the dinitrocarbanilide component of nicarbazin in eggs with on-line clean-up</title><link>http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-dinitrocarbanilide-component-of-nicarbazin-in-eggs-with-on-line-clean-up</link> <comments>http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-dinitrocarbanilide-component-of-nicarbazin-in-eggs-with-on-line-clean-up#comments</comments> <pubDate>Sun, 19 May 2013 04:00:25 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[coccidial]]></category> <category><![CDATA[dihydrogenphosphate]]></category> <category><![CDATA[dinitrocarbanilide]]></category> <category><![CDATA[nicarbazin]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-dinitrocarbanilide-component-of-nicarbazin-in-eggs-with-on-line-clean-up</guid> <description><![CDATA[Tarbin, J. A.; Shearer, G., 1993: High-performance liquid chromatographic method for the determination of the dinitrocarbanilide component of nicarbazin in eggs with on-line clean-up. Journal Of Chromatography Biomedical Applications. 613(2): 354-358 A high-performance liquid chromatographic method for the determination of the dinitrocarbanilide component of the anti-coccidial drug nicarbazin has been developed. The drug was extracted [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-dinitrocarbanilide-component-of-nicarbazin-in-eggs-with-on-line-clean-up/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>High-performance liquid chromatographic method for the determination of the anthelmintic nitroxynil in cattle muscle tissue with on-line anion-exchange clean-up</title><link>http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-anthelmintic-nitroxynil-in-cattle-muscle-tissue-with-on-line-anion-exchange-clean-up</link> <comments>http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-anthelmintic-nitroxynil-in-cattle-muscle-tissue-with-on-line-anion-exchange-clean-up#comments</comments> <pubDate>Sun, 19 May 2013 04:00:24 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[chromatogaphic]]></category> <category><![CDATA[nitroxynil]]></category> <category><![CDATA[plrp]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-anthelmintic-nitroxynil-in-cattle-muscle-tissue-with-on-line-anion-exchange-clean-up</guid> <description><![CDATA[Tarbin, J. A.; Shearer, G., 1993: High-performance liquid chromatographic method for the determination of the anthelmintic nitroxynil in cattle muscle tissue with on-line anion-exchange clean-up. Journal Of Chromatography Biomedical Applications. 613(2): 347-353 A high-performance liquid chromatogaphic method for the determination of the anthelmintic nitroxynil has been developed. The drug was extracted from cattle muscle tissue [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/high-performance-liquid-chromatographic-method-for-the-determination-of-the-anthelmintic-nitroxynil-in-cattle-muscle-tissue-with-on-line-anion-exchange-clean-up/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Determination of amino acids in food and feed by derivatization with 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate and reversed-phase liquid chromatographic separation</title><link>http://scien.net/chromatography/precolumn/determination-of-amino-acids-in-food-and-feed-by-derivatization-with-6-aminoquinolyl-n-hydroxysuccinimidyl-carbamate-and-reversed-phase-liquid-chromatographic-separation</link> <comments>http://scien.net/chromatography/precolumn/determination-of-amino-acids-in-food-and-feed-by-derivatization-with-6-aminoquinolyl-n-hydroxysuccinimidyl-carbamate-and-reversed-phase-liquid-chromatographic-separation#comments</comments> <pubDate>Wed, 15 May 2013 03:17:52 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[aminoquinolyl]]></category> <category><![CDATA[cysteic]]></category> <category><![CDATA[hydroxysuccinimidyl]]></category> <category><![CDATA[postcolumn]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/determination-of-amino-acids-in-food-and-feed-by-derivatization-with-6-aminoquinolyl-n-hydroxysuccinimidyl-carbamate-and-reversed-phase-liquid-chromatographic-separation</guid> <description><![CDATA[Liu, Hj; Chang, By; Yan, Hw; Yu, Fh; Liu, Xx, 1995: Determination of amino acids in food and feed by derivatization with 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate and reversed-phase liquid chromatographic separation. Journal of AOAC International 78(3): 736-744 A study of a new amino acid analysis method using 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate as a precolumn derivatization reagent for the analysis [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/determination-of-amino-acids-in-food-and-feed-by-derivatization-with-6-aminoquinolyl-n-hydroxysuccinimidyl-carbamate-and-reversed-phase-liquid-chromatographic-separation/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Detection and quantification of trace levels of carbaryl and its metabolites from Dendroctonus frontalis Zimmermann</title><link>http://scien.net/chromatography/precolumn/detection-and-quantification-of-trace-levels-of-carbaryl-and-its-metabolites-from-dendroctonus-frontalis-zimmermann</link> <comments>http://scien.net/chromatography/precolumn/detection-and-quantification-of-trace-levels-of-carbaryl-and-its-metabolites-from-dendroctonus-frontalis-zimmermann#comments</comments> <pubDate>Wed, 15 May 2013 03:12:55 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[bedford]]></category> <category><![CDATA[bondapak]]></category> <category><![CDATA[millex]]></category> <category><![CDATA[millipore]]></category> <category><![CDATA[nanogram]]></category> <category><![CDATA[radioisotopic]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/detection-and-quantification-of-trace-levels-of-carbaryl-and-its-metabolites-from-dendroctonus-frontalis-zimmermann</guid> <description><![CDATA[Zhong, He; Hastings, Felton L.; Hain, Fred P., 1994: Detection and quantification of trace levels of carbaryl and its metabolites from Dendroctonus frontalis Zimmermann. Journal Of Agricultural &#038; Food Chemistry. 42(4): 949-953 A direct and sensitive high-performance liquid chromatographic (Hplc) method was developed for the detection and quantitative analysis of carbaryl and metabolites at the [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/detection-and-quantification-of-trace-levels-of-carbaryl-and-its-metabolites-from-dendroctonus-frontalis-zimmermann/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Derivatization reactions for the determination of aflatoxins by liquid chromatography with fluorescence detection</title><link>http://scien.net/chromatography/precolumn/derivatization-reactions-for-the-determination-of-aflatoxins-by-liquid-chromatography-with-fluorescence-detection</link> <comments>http://scien.net/chromatography/precolumn/derivatization-reactions-for-the-determination-of-aflatoxins-by-liquid-chromatography-with-fluorescence-detection#comments</comments> <pubDate>Wed, 15 May 2013 03:10:36 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[postcolumn]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/derivatization-reactions-for-the-determination-of-aflatoxins-by-liquid-chromatography-with-fluorescence-detection</guid> <description><![CDATA[Kok, W. T., 1994: Derivatization reactions for the determination of aflatoxins by liquid chromatography with fluorescence detection. Journal Of Chromatography B Biomedical Applications. 659(1-2): 127-137 Various derivatization methods for the fluorometric detection of aflatoxins after separation by Hplc are reviewed. In normal-phase chromatography the sensitivity for aflatoxins B-1 and B-2, was improved by using special [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/derivatization-reactions-for-the-determination-of-aflatoxins-by-liquid-chromatography-with-fluorescence-detection/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Analysis of fumonisin B1 in rodent feed by gradient elution HPLC using precolumn derivatization with FMOC and fluorescence detection</title><link>http://scien.net/chromatography/precolumn/analysis-of-fumonisin-b1-in-rodent-feed-by-gradient-elution-hplc-using-precolumn-derivatization-with-fmoc-and-fluorescence-detection</link> <comments>http://scien.net/chromatography/precolumn/analysis-of-fumonisin-b1-in-rodent-feed-by-gradient-elution-hplc-using-precolumn-derivatization-with-fmoc-and-fluorescence-detection#comments</comments> <pubDate>Tue, 14 May 2013 01:37:05 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[acetonitrilewater]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/analysis-of-fumonisin-b1-in-rodent-feed-by-gradient-elution-hplc-using-precolumn-derivatization-with-fmoc-and-fluorescence-detection</guid> <description><![CDATA[Holcomb, M; Thompson, Hc Jr; Hankins, Lj, 1993: Analysis of fumonisin B1 in rodent feed by gradient elution HPLC using precolumn derivatization with FMOC and fluorescence detection. Journal of agricultural and food chemistry 41(5): 764-767 A new, sensitive, and stable method has been developed for the analysis of fumonisin B1 in rodent feed. Fumonisin B1, [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/analysis-of-fumonisin-b1-in-rodent-feed-by-gradient-elution-hplc-using-precolumn-derivatization-with-fmoc-and-fluorescence-detection/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Trace-level enrichment of phenylurea herbicides from surface and drinking water coupled on-line with column liquid chromatography-thermospray mass spectrometry</title><link>http://scien.net/chromatography/precolumn/trace-level-enrichment-of-phenylurea-herbicides-from-surface-and-drinking-water-coupled-on-line-with-column-liquid-chromatography-thermospray-mass-spectrometry</link> <comments>http://scien.net/chromatography/precolumn/trace-level-enrichment-of-phenylurea-herbicides-from-surface-and-drinking-water-coupled-on-line-with-column-liquid-chromatography-thermospray-mass-spectrometry#comments</comments> <pubDate>Mon, 13 May 2013 01:13:50 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[divinylbenzene]]></category> <category><![CDATA[monuron]]></category> <category><![CDATA[phenylurea]]></category> <category><![CDATA[phenylureas]]></category> <category><![CDATA[plrp]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/trace-level-enrichment-of-phenylurea-herbicides-from-surface-and-drinking-water-coupled-on-line-with-column-liquid-chromatography-thermospray-mass-spectrometry</guid> <description><![CDATA[Bagheri, H.; Brouwer, E. R.; Ghijsen, R. T.; Brinkman, U. A. T., 1992: Trace-level enrichment of phenylurea herbicides from surface and drinking water coupled on-line with column liquid chromatography-thermospray mass spectrometry. Analusis. 20(8): 475-482 Trace enrichment of phenylurea herbicide on a 10 mm times 2.0 mm id precolumn packed with Plrp-S polystyrene-divinylbenzene copolymer or on [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/trace-level-enrichment-of-phenylurea-herbicides-from-surface-and-drinking-water-coupled-on-line-with-column-liquid-chromatography-thermospray-mass-spectrometry/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Selective and sensitive detection of organic contaminants in water samples by on-line trace enrichment-gas chromatography-mass spectrometry</title><link>http://scien.net/chromatography/precolumn/selective-and-sensitive-detection-of-organic-contaminants-in-water-samples-by-on-line-trace-enrichment-gas-chromatography-mass-spectrometry</link> <comments>http://scien.net/chromatography/precolumn/selective-and-sensitive-detection-of-organic-contaminants-in-water-samples-by-on-line-trace-enrichment-gas-chromatography-mass-spectrometry#comments</comments> <pubDate>Sat, 11 May 2013 05:13:51 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[preconcentrated]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/selective-and-sensitive-detection-of-organic-contaminants-in-water-samples-by-on-line-trace-enrichment-gas-chromatography-mass-spectrometry</guid> <description><![CDATA[Bulterman, Albert J.; Vreuls, Jolan J.; Ghiljsen, Rudy T.; Brinkman, Udo A. T., 1993: Selective and sensitive detection of organic contaminants in water samples by on-line trace enrichment-gas chromatography-mass spectrometry. Hrc (journal Of High Resolution Chromatography). 16(7): 397-403 Liquid chromatographic (Lc) type trace enrichment is coupled on-line with capillary gas chromatography (Gc) with mass spectrometric [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/selective-and-sensitive-detection-of-organic-contaminants-in-water-samples-by-on-line-trace-enrichment-gas-chromatography-mass-spectrometry/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Precolumn phenylisothiocyanate derivatization and liquid chromatography of free amino acids in biological samples</title><link>http://scien.net/chromatography/precolumn/precolumn-phenylisothiocyanate-derivatization-and-liquid-chromatography-of-free-amino-acids-in-biological-samples</link> <comments>http://scien.net/chromatography/precolumn/precolumn-phenylisothiocyanate-derivatization-and-liquid-chromatography-of-free-amino-acids-in-biological-samples#comments</comments> <pubDate>Sat, 11 May 2013 03:05:42 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[deproteinization]]></category> <category><![CDATA[phenylisothiocyanate]]></category> <category><![CDATA[phenylthiocarbamyl]]></category> <category><![CDATA[sulfosalicylic]]></category> <category><![CDATA[ultrafilter]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/precolumn-phenylisothiocyanate-derivatization-and-liquid-chromatography-of-free-amino-acids-in-biological-samples</guid> <description><![CDATA[Hagen, Steven R.; Augustin, Jorg; Grings, Elaine; Tassinari, Pat, 1993: Precolumn phenylisothiocyanate derivatization and liquid chromatography of free amino acids in biological samples. Food Chemistry. 46(3): 319-323 A method for the analysis for free amino acids using precolumn phenylisothiocyanate derivatization and liquid chromatography was tested on a range of sample matrices: bovine plasma, dry cat [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/precolumn-phenylisothiocyanate-derivatization-and-liquid-chromatography-of-free-amino-acids-in-biological-samples/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>On-line supercritical fluid extraction-supercritical fluid reaction-capillary gas chromatography analysis of the fatty acid composition of oilseeds</title><link>http://scien.net/chromatography/precolumn/on-line-supercritical-fluid-extraction-supercritical-fluid-reaction-capillary-gas-chromatography-analysis-of-the-fatty-acid-composition-of-oilseeds</link> <comments>http://scien.net/chromatography/precolumn/on-line-supercritical-fluid-extraction-supercritical-fluid-reaction-capillary-gas-chromatography-analysis-of-the-fatty-acid-composition-of-oilseeds#comments</comments> <pubDate>Fri, 10 May 2013 03:08:17 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[primrose]]></category> <category><![CDATA[restrictor]]></category> <category><![CDATA[transesterified]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/on-line-supercritical-fluid-extraction-supercritical-fluid-reaction-capillary-gas-chromatography-analysis-of-the-fatty-acid-composition-of-oilseeds</guid> <description><![CDATA[King, Jerry W.; France, John E.; Snyder, Janet M., 1992: On-line supercritical fluid extraction-supercritical fluid reaction-capillary gas chromatography analysis of the fatty acid composition of oilseeds. Fresenius&#8217; Journal Of Analytical Chemistry. 344(10-11): 474-478 The versatility of supercritical fluid extraction (Sfe) directly coupled with gas chromatography (Gc) is further expanded by the addition of an on-line [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/on-line-supercritical-fluid-extraction-supercritical-fluid-reaction-capillary-gas-chromatography-analysis-of-the-fatty-acid-composition-of-oilseeds/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Ochratoxin A in plasma of Norwegian swine determined by an HPLC column-switching method</title><link>http://scien.net/chromatography/precolumn/ochratoxin-a-in-plasma-of-norwegian-swine-determined-by-an-hplc-column-switching-method</link> <comments>http://scien.net/chromatography/precolumn/ochratoxin-a-in-plasma-of-norwegian-swine-determined-by-an-hplc-column-switching-method#comments</comments> <pubDate>Fri, 10 May 2013 03:05:06 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[divinylbenzene]]></category> <category><![CDATA[postcolumn]]></category> <category><![CDATA[slaughterhouses]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/ochratoxin-a-in-plasma-of-norwegian-swine-determined-by-an-hplc-column-switching-method</guid> <description><![CDATA[Langseth, Wenche; Nymoen, Ulf; Bergsjo, Bjarne, 1993: Ochratoxin A in plasma of Norwegian swine determined by an HPLC column-switching method. Natural Toxins. 1(4): 216-221 A method well suited for screening large numbers of plasma samples for ochratoxin A is presented. Proteins were precipitated with methanol and the supernatant diluted with 0.01 M phosphoric acid before [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/ochratoxin-a-in-plasma-of-norwegian-swine-determined-by-an-hplc-column-switching-method/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Non-protein amino acids in seeds of neotropical species of Acacia</title><link>http://scien.net/chromatography/precolumn/non-protein-amino-acids-in-seeds-of-neotropical-species-of-acacia</link> <comments>http://scien.net/chromatography/precolumn/non-protein-amino-acids-in-seeds-of-neotropical-species-of-acacia#comments</comments> <pubDate>Fri, 10 May 2013 02:51:53 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[aculeiferum]]></category> <category><![CDATA[albizzine]]></category> <category><![CDATA[aminopropionic]]></category> <category><![CDATA[diaminopropionic]]></category> <category><![CDATA[filicinae]]></category> <category><![CDATA[fluorenylmethylchlorofo]]></category> <category><![CDATA[oxalyl]]></category> <category><![CDATA[vassals]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/non-protein-amino-acids-in-seeds-of-neotropical-species-of-acacia</guid> <description><![CDATA[Evans, Christine S.; Shah, Ajit J.; Adlard, Max W.; Arce, M. Lourdes Rico, 1993: Non-protein amino acids in seeds of neotropical species of Acacia. Phytochemistry (oxford). 32(1): 123-126 Precolumn derivatization with 9-fluorenylmethylchloroformate (Fmoc-Cl) and reversed phase Hplc have been used for analysis of non-protein amino acids in extracts of seeds of neotropical species of Acacia. [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/non-protein-amino-acids-in-seeds-of-neotropical-species-of-acacia/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Determination of methionine sulfoxide in biological materials using HPLC and its degradability in the rumen of cattle</title><link>http://scien.net/chromatography/precolumn/determination-of-methionine-sulfoxide-in-biological-materials-using-hplc-and-its-degradability-in-the-rumen-of-cattle</link> <comments>http://scien.net/chromatography/precolumn/determination-of-methionine-sulfoxide-in-biological-materials-using-hplc-and-its-degradability-in-the-rumen-of-cattle#comments</comments> <pubDate>Tue, 07 May 2013 01:25:10 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[aminoethylindole]]></category> <category><![CDATA[autosampler]]></category> <category><![CDATA[beckman]]></category> <category><![CDATA[hydrolyzates]]></category> <category><![CDATA[methanesulfonic]]></category> <category><![CDATA[phthaldialdehyde]]></category> <category><![CDATA[pmole]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/determination-of-methionine-sulfoxide-in-biological-materials-using-hplc-and-its-degradability-in-the-rumen-of-cattle</guid> <description><![CDATA[Puchala, R.; Pior, Hanna; Von Keyselingk, Marina; Shelford, J. A.; Barej, W., 1994: Determination of methionine sulfoxide in biological materials using HPLC and its degradability in the rumen of cattle. Animal Feed Science &#038; Technology. 48(1-2): 121-130 A method was developed for estimating concentrations of methionine sulfoxide, methionine and other amino acids in feed protein [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/determination-of-methionine-sulfoxide-in-biological-materials-using-hplc-and-its-degradability-in-the-rumen-of-cattle/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Determination of diaminopimelic acid in biological materials using high-performance liquid chromatography</title><link>http://scien.net/chromatography/precolumn/determination-of-diaminopimelic-acid-in-biological-materials-using-high-performance-liquid-chromatography</link> <comments>http://scien.net/chromatography/precolumn/determination-of-diaminopimelic-acid-in-biological-materials-using-high-performance-liquid-chromatography#comments</comments> <pubDate>Tue, 07 May 2013 01:24:34 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[autosampler]]></category> <category><![CDATA[beckman]]></category> <category><![CDATA[dapa]]></category> <category><![CDATA[diaminopimelic]]></category> <category><![CDATA[phthaldialdehyde]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/determination-of-diaminopimelic-acid-in-biological-materials-using-high-performance-liquid-chromatography</guid> <description><![CDATA[Puchala, R.; Pior, Hanna; Kulasek, G. W.; Shelford, J. A., 1992: Determination of diaminopimelic acid in biological materials using high-performance liquid chromatography. Journal Of Chromatography. 623(1): 63-67 A method for the determination of diaminopimelic acid (Dapa) concentrations in feeds and rumen digesta by reversed-phase high-performance liquid chromatography using precolumn derivatization with o-phthaldialdehyde and fluorimetric detection [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/determination-of-diaminopimelic-acid-in-biological-materials-using-high-performance-liquid-chromatography/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Automated sample preparation using supported liquid membranes for liquid chromatographic determination of sulfonylurea herbicides</title><link>http://scien.net/chromatography/precolumn/automated-sample-preparation-using-supported-liquid-membranes-for-liquid-chromatographic-determination-of-sulfonylurea-herbicides</link> <comments>http://scien.net/chromatography/precolumn/automated-sample-preparation-using-supported-liquid-membranes-for-liquid-chromatographic-determination-of-sulfonylurea-herbicides#comments</comments> <pubDate>Mon, 06 May 2013 02:06:35 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[alkalineneutral]]></category> <category><![CDATA[sulfonylureas]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/automated-sample-preparation-using-supported-liquid-membranes-for-liquid-chromatographic-determination-of-sulfonylurea-herbicides</guid> <description><![CDATA[Nilve G.; Stebbins R., 1991: Automated sample preparation using supported liquid membranes for liquid chromatographic determination of sulfonylurea herbicides. Chromatographia. 32(5-6): 269-277 Sample preparation for determination of sulfonylurea herbicides in aqueous samples is investigated. The technique studied utilizes extraction and back extraction in an automated flow system and is coupled on-line to a liquid chromatographic [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/automated-sample-preparation-using-supported-liquid-membranes-for-liquid-chromatographic-determination-of-sulfonylurea-herbicides/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Determination of propylthiouracil in human breast milk by direct injection high performance liquid chromatography</title><link>http://scien.net/chromatography/precolumn/determination-of-propylthiouracil-in-human-breast-milk-by-direct-injection-high-performance-liquid-chromatography</link> <comments>http://scien.net/chromatography/precolumn/determination-of-propylthiouracil-in-human-breast-milk-by-direct-injection-high-performance-liquid-chromatography#comments</comments> <pubDate>Wed, 01 May 2013 04:24:57 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[chromatographichplc]]></category> <category><![CDATA[membran]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/determination-of-propylthiouracil-in-human-breast-milk-by-direct-injection-high-performance-liquid-chromatography</guid> <description><![CDATA[Ohkubo T.; Uno T.; Sugawara K., 1991: Determination of propylthiouracil in human breast milk by direct injection high performance liquid chromatography. Journal Of Liquid Chromatography. 14(14): 2745-2754 A high-performance liquid chromatographic(Hplc) method was developed for the assay of propylthiouracil in human breast milk. After filtration with membran filter(Molcut Ii), the eluent was injected into a [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/determination-of-propylthiouracil-in-human-breast-milk-by-direct-injection-high-performance-liquid-chromatography/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Determination of phenoxyacid herbicides in water</title><link>http://scien.net/chromatography/precolumn/determination-of-phenoxyacid-herbicides-in-water</link> <comments>http://scien.net/chromatography/precolumn/determination-of-phenoxyacid-herbicides-in-water#comments</comments> <pubDate>Wed, 01 May 2013 04:24:56 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[analytica]]></category> <category><![CDATA[bentazone]]></category> <category><![CDATA[heartcut]]></category> <category><![CDATA[heartcutting]]></category> <category><![CDATA[hydrogensulfate]]></category> <category><![CDATA[phenoxyacid]]></category> <category><![CDATA[plrp]]></category> <category><![CDATA[tetrabutylammonium]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/determination-of-phenoxyacid-herbicides-in-water</guid> <description><![CDATA[Geerdink R.B.; Graumans A.M.B.C.; Viveen J., 1991: Determination of phenoxyacid herbicides in water. Journal Of Chromatography. 547(1-2): 478-483 Novel clean-up techniques for a polymeric precolumn (Plrp-S) for the subsequent determination of bentazone and eight phenoxy acid herbicides in surface water samples are described. After preconcentration of the components at pH on a 10.times. 2 mm [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/determination-of-phenoxyacid-herbicides-in-water/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Analysis of amino acids in soy isolates and navy beans using precolumn derivatization with phenylisothiocyanate and reversed-phase high performance liquid chromatography</title><link>http://scien.net/chromatography/precolumn/analysis-of-amino-acids-in-soy-isolates-and-navy-beans-using-precolumn-derivatization-with-phenylisothiocyanate-and-reversed-phase-high-performance-liquid-chromatography</link> <comments>http://scien.net/chromatography/precolumn/analysis-of-amino-acids-in-soy-isolates-and-navy-beans-using-precolumn-derivatization-with-phenylisothiocyanate-and-reversed-phase-high-performance-liquid-chromatography#comments</comments> <pubDate>Tue, 30 Apr 2013 04:17:02 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[phenylisothiocyanate]]></category> <category><![CDATA[pitc]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/analysis-of-amino-acids-in-soy-isolates-and-navy-beans-using-precolumn-derivatization-with-phenylisothiocyanate-and-reversed-phase-high-performance-liquid-chromatography</guid> <description><![CDATA[Chang, Kc; Skauge, Lh; Satterlee, Ld, 1989: Analysis of amino acids in soy isolates and navy beans using precolumn derivatization with phenylisothiocyanate and reversed-phase high performance liquid chromatography. Journal of food science: an official ication of the Institute of Food Technologists 54(3): 756 Amino acid analysis of three legume samples using precolumn phenylisothiocyanate (Pitc) derivatization [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/analysis-of-amino-acids-in-soy-isolates-and-navy-beans-using-precolumn-derivatization-with-phenylisothiocyanate-and-reversed-phase-high-performance-liquid-chromatography/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Rapid extraction and analysis of volatile fatty acids in soil</title><link>http://scien.net/chromatography/precolumn/rapid-extraction-and-analysis-of-volatile-fatty-acids-in-soil</link> <comments>http://scien.net/chromatography/precolumn/rapid-extraction-and-analysis-of-volatile-fatty-acids-in-soil#comments</comments> <pubDate>Sat, 27 Apr 2013 03:10:15 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[carbopack]]></category> <category><![CDATA[carbowax]]></category> <category><![CDATA[millipore]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/rapid-extraction-and-analysis-of-volatile-fatty-acids-in-soil</guid> <description><![CDATA[Paul J.W.; Beauchamp E.G., 1989: Rapid extraction and analysis of volatile fatty acids in soil. Communications In Soil Science &#038; Plant Analysis. 20(1-2): 85-94 The concentrations of volatile fatty acids (Vfa) in soils are important in studies involving phytotoxicity and fermentation processes. Concentrations of acetic, propionic, and butyric acids as low as 0.21, 0.14, and [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/rapid-extraction-and-analysis-of-volatile-fatty-acids-in-soil/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Improved rapid assay of uric acid in serum by liquid chromatography</title><link>http://scien.net/chromatography/precolumn/improved-rapid-assay-of-uric-acid-in-serum-by-liquid-chromatography</link> <comments>http://scien.net/chromatography/precolumn/improved-rapid-assay-of-uric-acid-in-serum-by-liquid-chromatography#comments</comments> <pubDate>Fri, 26 Apr 2013 01:50:49 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[deproteinization]]></category> <category><![CDATA[recondition]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/improved-rapid-assay-of-uric-acid-in-serum-by-liquid-chromatography</guid> <description><![CDATA[Hama M., 1988: Improved rapid assay of uric acid in serum by liquid chromatography. Clinical Chemistry: 2567-2568 This improved method for rapid determination of uric acid in serum in based on high-performance liquid-gel-permeation chromatography, with hydrophilic and highly porous vinyl alcohol copolymer as packing material. It has the following advantages: no need for sample deproteinization [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/improved-rapid-assay-of-uric-acid-in-serum-by-liquid-chromatography/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Evidence that free gamma carboxyglutamic acid circulates in serum</title><link>http://scien.net/chromatography/precolumn/evidence-that-free-gamma-carboxyglutamic-acid-circulates-in-serum</link> <comments>http://scien.net/chromatography/precolumn/evidence-that-free-gamma-carboxyglutamic-acid-circulates-in-serum#comments</comments> <pubDate>Thu, 25 Apr 2013 01:32:22 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[carboxyglutamic]]></category> <category><![CDATA[deproteinization]]></category> <category><![CDATA[phse]]></category> <category><![CDATA[phthalaldehyde]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/evidence-that-free-gamma-carboxyglutamic-acid-circulates-in-serum</guid> <description><![CDATA[Fournier B.; Gineyts E.; Delmas P.D., 1989: Evidence that free gamma carboxyglutamic acid circulates in serum. Clinica Chimica Acta. 182(2): 173-182 We report a rapid, sensitive and reproducible method to measure free gamma-carboxyglutamic acid (Gla) in serum using precolumn derivatization with O-phthalaldehyde, reversed-phse chromatography and deproteinization of serum by ultrafiltration. Serum free Gla level in [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/evidence-that-free-gamma-carboxyglutamic-acid-circulates-in-serum/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Determination of traces of natural brassinosteroids as dansylaminophenylboronates by liquid chromatography with fluorimetric detection</title><link>http://scien.net/chromatography/precolumn/determination-of-traces-of-natural-brassinosteroids-as-dansylaminophenylboronates-by-liquid-chromatography-with-fluorimetric-detection</link> <comments>http://scien.net/chromatography/precolumn/determination-of-traces-of-natural-brassinosteroids-as-dansylaminophenylboronates-by-liquid-chromatography-with-fluorimetric-detection#comments</comments> <pubDate>Wed, 24 Apr 2013 08:52:03 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[boronates]]></category> <category><![CDATA[brassinolide]]></category> <category><![CDATA[brassinosteroid]]></category> <category><![CDATA[brassinosteroids]]></category> <category><![CDATA[daba]]></category> <category><![CDATA[dansylaminophenylboroni]]></category> <category><![CDATA[microanalytical]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/determination-of-traces-of-natural-brassinosteroids-as-dansylaminophenylboronates-by-liquid-chromatography-with-fluorimetric-detection</guid> <description><![CDATA[Gamoh K.; Okamoto N.; Takatsuto S.; Tejima I., 1990: Determination of traces of natural brassinosteroids as dansylaminophenylboronates by liquid chromatography with fluorimetric detection. Analytica Chimica Acta. 228(1): 101-106 A microanalytical method for the determination of traces of natural brassinosteroids as their dansylaminophenylboronates by liquid chromatography with fluorimetric detection is described. The boronates are easily prepared [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/determination-of-traces-of-natural-brassinosteroids-as-dansylaminophenylboronates-by-liquid-chromatography-with-fluorimetric-detection/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Complete amino acid analysis in hydrolysates of foods and feces by liquid chromatography of precolumn phenylisothiocyanate derivatives</title><link>http://scien.net/chromatography/precolumn/complete-amino-acid-analysis-in-hydrolysates-of-foods-and-feces-by-liquid-chromatography-of-precolumn-phenylisothiocyanate-derivatives</link> <comments>http://scien.net/chromatography/precolumn/complete-amino-acid-analysis-in-hydrolysates-of-foods-and-feces-by-liquid-chromatography-of-precolumn-phenylisothiocyanate-derivatives#comments</comments> <pubDate>Mon, 15 Apr 2013 12:28:28 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[cysteic]]></category> <category><![CDATA[cysteinecystine]]></category> <category><![CDATA[phenylisothiocyanate]]></category> <category><![CDATA[pitc]]></category> <category><![CDATA[reproductibility]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/complete-amino-acid-analysis-in-hydrolysates-of-foods-and-feces-by-liquid-chromatography-of-precolumn-phenylisothiocyanate-derivatives</guid> <description><![CDATA[Peace R.W., 1988: Complete amino acid analysis in hydrolysates of foods and feces by liquid chromatography of precolumn phenylisothiocyanate derivatives. Journal Of The Association Of Official Analytical Chemists: 1172-1175 The amino acid analysis method using precolumn phenylisothiocyanate (Pitc) derivatization and liquid chromatography was modified for accurate determination of methionine (as methionine sulfone), cysteine/cystine (as cysteic [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/complete-amino-acid-analysis-in-hydrolysates-of-foods-and-feces-by-liquid-chromatography-of-precolumn-phenylisothiocyanate-derivatives/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>An improved method for analysis of polyamines in plant tissue by precolumn derivatization with o-phthalaldehyde and separation by high performance liquid chromatography</title><link>http://scien.net/chromatography/precolumn/an-improved-method-for-analysis-of-polyamines-in-plant-tissue-by-precolumn-derivatization-with-o-phthalaldehyde-and-separation-by-high-performance-liquid-chromatography</link> <comments>http://scien.net/chromatography/precolumn/an-improved-method-for-analysis-of-polyamines-in-plant-tissue-by-precolumn-derivatization-with-o-phthalaldehyde-and-separation-by-high-performance-liquid-chromatography#comments</comments> <pubDate>Mon, 01 Apr 2013 05:19:30 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[agmatine]]></category> <category><![CDATA[benzoylation]]></category> <category><![CDATA[caroliniana]]></category> <category><![CDATA[chromatogr]]></category> <category><![CDATA[diaminopropane]]></category> <category><![CDATA[dimethylcyclohexylamine]]></category> <category><![CDATA[homospermidine]]></category> <category><![CDATA[phthalaldehyde]]></category> <category><![CDATA[picomoles]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/an-improved-method-for-analysis-of-polyamines-in-plant-tissue-by-precolumn-derivatization-with-o-phthalaldehyde-and-separation-by-high-performance-liquid-chromatography</guid> <description><![CDATA[Corbin, Jl; Marsh, Bh; Peters, Ga, 1989: An improved method for analysis of polyamines in plant tissue by precolumn derivatization with o-phthalaldehyde and separation by high performance liquid chromatography. Plant physiology 90(2): 434-439 An improved high-performance liquid-chromatographic method was developed for estimation of polyamines in crude plant extracts. Polyamines were derivatized with o-phthalaldehyde and mercaptoethanol [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/an-improved-method-for-analysis-of-polyamines-in-plant-tissue-by-precolumn-derivatization-with-o-phthalaldehyde-and-separation-by-high-performance-liquid-chromatography/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Protein value of products made from a single milk collection</title><link>http://scien.net/chromatography/precolumn/protein-value-of-products-made-from-a-single-milk-collection</link> <comments>http://scien.net/chromatography/precolumn/protein-value-of-products-made-from-a-single-milk-collection#comments</comments> <pubDate>Thu, 21 Feb 2013 03:15:07 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[adsorbant]]></category> <category><![CDATA[camembert]]></category> <category><![CDATA[kumagawa]]></category> <category><![CDATA[lyophilised]]></category> <category><![CDATA[wallenfels]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/protein-value-of-products-made-from-a-single-milk-collection</guid> <description><![CDATA[Pailler F M., 1987: Protein value of products made from a single milk collection. Sciences Des Aliments: 189-204 In the framework of a larger study, the authors examined five lyophilised products: milk, yoghurt, buttermilk, fresh cheese and the same cheese fermented (camembert), all made from a single collection of 717 litres of milk, treated by [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/protein-value-of-products-made-from-a-single-milk-collection/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Headspace profiles sampling and recording method for cheese</title><link>http://scien.net/chromatography/precolumn/headspace-profiles-sampling-and-recording-method-for-cheese</link> <comments>http://scien.net/chromatography/precolumn/headspace-profiles-sampling-and-recording-method-for-cheese#comments</comments> <pubDate>Tue, 29 Jan 2013 23:45:45 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/headspace-profiles-sampling-and-recording-method-for-cheese</guid> <description><![CDATA[Sala T.F., 1987: Headspace profiles sampling and recording method for cheese. Milchwissenschaft: 713-716 A simple and convenient technique for recording headspace profiles of cheese samples is described. After equilibration of a small sample of the grated cheese in a sealed flask the volatile compounds of the headspace were adsorbed on a micro-precolumn of Tenax Cg [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/headspace-profiles-sampling-and-recording-method-for-cheese/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Electrochemical detection of phenylurea herbicides in liquid chromatography</title><link>http://scien.net/chromatography/precolumn/electrochemical-detection-of-phenylurea-herbicides-in-liquid-chromatography</link> <comments>http://scien.net/chromatography/precolumn/electrochemical-detection-of-phenylurea-herbicides-in-liquid-chromatography#comments</comments> <pubDate>Sat, 10 Nov 2012 07:59:14 +0000</pubDate> <dc:creator>admin</dc:creator> <category><![CDATA[Precolumn]]></category> <category><![CDATA[metoxuron]]></category> <category><![CDATA[phenylurea]]></category> <category><![CDATA[phenylureas]]></category><guid
isPermaLink="false">http://scien.net/chromatography/precolumn/electrochemical-detection-of-phenylurea-herbicides-in-liquid-chromatography</guid> <description><![CDATA[Brinkman U.A.T., 1985: Electrochemical detection of phenylurea herbicides in liquid chromatography. Journal Of Liquid Chromatography: 315-332 The electrochemical detection of 10 phenylurea herbicides after on-line trace enrichment on a small C18 precolumn and liquid chromatography on a C18 analytical column is described. The method presented shows sub-ppb sensitivity in surface water samples without extensive sample [...]]]></description> <wfw:commentRss>http://scien.net/chromatography/precolumn/electrochemical-detection-of-phenylurea-herbicides-in-liquid-chromatography/feed</wfw:commentRss> <slash:comments>0</slash:comments> </item> </channel> </rss>