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- W2085718367 abstract "A rapid and sensitive method for the determination of 2,5-hexanedione (HD) (the principal metabolite of n -hexane) in urine samples by reversed-phase high-performance liquid chromatography (HPLC) is described. The sample preparation procedure was based on solid-liquid extraction after acid hydrolysis; it was optimized to enable accurate HD determination in less than 30 min. Analysis of spiked real samples showed a recovery of more than 85% at the 0.1-ppm level, with a relative standard deviation of 5% and a detection limit as low as 0.01 ppm. Intra-assay and inter-assay coefficients of variation at the 0.5-ppm level were 4 and 5%, respectively. The chromatographic peak assigned to HD was identified by collecting the HPLC eluate at the retention time of HD and analysing it using Fourier transform infrared spectrometry coupled with high-resolution gas chromatography. Urine samples of unexposed and exposed subjects were analysed following the proposed analytical procedure. HPLC and high-resolution gas chromatographic analyses were also compared on these samples. A correlation factor of 0.992 was obtained, which showed a good agreement between the two sets of data." @default.
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- W2085718367 date "1992-02-01" @default.
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- W2085718367 title "Rapid and sensitive determination of urinary 2,5-hexanedione by reversed-phase high-performance liquid chromatography" @default.
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- W2085718367 doi "https://doi.org/10.1016/0021-9673(92)85092-8" @default.
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