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- W2157806725 abstract "The retention index system is a reproducible means for the identification of drugs in toxicology samples analyzed by gas chromatography with flame ionization detectors. Nitrogen-phosphorus (NP) detectors do not respond well to the standard n-alkanes, which lack nitrogen and phosphorus groups and which are used to obtain the Kovats index. A method is presented that creates a retention index library based upon a homologous series of tri-n-alkylamines for a series of 125 drugs and metabolites. Standards were analyzed under temperature programmed conditions by simultaneous dual column chromatography using a 5% phenyl and a 50% phenyl methyl silicone fused-silica capillary column. By increasing the hydrogen and air flows to the NP detectors, the Kovats indices were calculated on the system using the n-alkanes C8 through C32. Tri-n-alkylamine indices calculated under the same conditions were compared to the Kovats indices for 14 drugs on the 5% phenyl column and for 12 drugs on the 50% phenyl column. The correlation was found to be linear. The Kovats indices on the 5% phenyl column were compared to previously reported values and found to be consistent." @default.
- W2157806725 created "2016-06-24" @default.
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- W2157806725 date "1987-09-01" @default.
- W2157806725 modified "2023-09-25" @default.
- W2157806725 title "A Retention Index Library for Commonly Encountered Drugs and Metabolites Using Tri-n-alkylamines as Reference Compounds, Nitrogen-Phosphorus Detectors, and Dual Capillary Chromatography" @default.
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- W2157806725 doi "https://doi.org/10.1093/jat/11.5.210" @default.
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