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- W2079231438 abstract "The availability of published methods for the determination of nicotine in commercial tobacco products based on state-of-the-art chromatographic methods is limited. Nicotine is a diprotic base with pKa's of 3.12 (pyridine ring) and 8.02 (pyrrolidine ring). Other monoprotic and diprotic bases are also present in commercial tobacco including anatabine, nornicotine, anabasine, and cotinine. In this paper, the chromatography of nicotine and the minor tobacco alkaloids under reversed-phase ion-pairing conditions is thoroughly studied. The results of this study are used to understand the retention mechanisms of the tobacco alkaloids, to examine their observed elution order with respect to fundamental analyte properties (size, functionality, and acid-base strength), and to select optimum chromatographic conditions for the determination of nicotine in commercial tobacco products." @default.
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- W2079231438 date "1999-08-01" @default.
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- W2079231438 title "Optimization study for the reversed-phase ion-pair liquid chromatographic determination of nicotine in commercial tobacco products" @default.
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- W2079231438 doi "https://doi.org/10.1016/s0021-9673(99)00639-1" @default.
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