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- W2072165730 abstract "A high-performance liquid chromatographic method with ultraviolet photometric detection has been developed for the quantitation of cotinine and trans-3′-hydroxycotinine in human serum. A solid-phase extraction procedure was performed for the analytes and the internal standard, N-ethylnorcotinine, before chromatography. The use of a 30-cm reversed-phase column and a mobile phase of water—methanol—0.1 M sodium acetate—acetonitrile (67:24.5:6.5:2, v/v), pH 4.3, prevented the co-elution of caffeine with cotinine. The limit of quantitation observed with this method was 5 ng/ml for both cotinine and trans-3′-hydroxycotinine. The present method proved useful for the determination of serum levels of these metabolites, correlating with nicotine daily intake." @default.
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- W2072165730 date "1992-06-01" @default.
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- W2072165730 title "Simultaneous determination of cotinine and trans-3′-hydroxycotinine in human serum by high-performance liquid chromatography" @default.
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- W2072165730 doi "https://doi.org/10.1016/0378-4347(92)80259-s" @default.
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