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Headspace gas chromatography with capillary column for urine alcohol determination.

Corrêa C, Pedroso R ...see all

Journal of chromatography. B, Biomedical sciences and applications, vol. 704, issue 1-2 (1997) pp. 365-368

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A headspace gas chromatographic method using a fused-silica capillary column Poraplot Q has been developed and validated for the detection and quantification of ethanol in urine. Under optimized conditions, ethanol was properly separated from acetaldehyde, acetone, isopropanol, methanol and n-propanol. Limits of detection (LODs) and quantification (LOQs) were 0.008 and 0.010 g/l, respectively. The precision studies within-run and between-run, using spiked urine samples (0.08, 0.8 and 2.0 g/l) showed maximum coefficients of variation 5.9 and 6.5%, respectively. Results of ethanol recovery varied from 91.6+/-0.8 to 103.3+/-1.8% over the concentration range from 0.01 to 3.20 g/l. The method was appropriate for the detection of ethanol in urine samples. This matrix can be used for monitoring alcohol abuse in the workplace and used in alcohol rehabilitation programs.

Author-supplied keywords

  • Adult
  • Chromatography
  • Ethanol
  • Ethanol: urine
  • Gas
  • Gas: methods
  • Humans
  • Kinetics
  • Male
  • Quality Control
  • Sensitivity and Specificity
  • ethanol

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  • C L Corrêa

  • R C Pedroso

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