Direct acetylation and determination of chlorophenols in aqueous samples by gas chromatography coupled with an electron-capture detector

J Chromatogr Sci. 2012 Aug;50(7):564-8. doi: 10.1093/chromsci/bms040. Epub 2012 Apr 25.

Abstract

A method was developed that offers a rapid, simple and accurate technique for the determination of chlorophenols at trace levels in aqueous samples with very limited volumes of organic solvents. These compounds were acetylated, then preliminarily extracted with n-hexane. The enriched chlorophenols were directly analyzed using gas chromatography with an electron-capture detector. The detection limits were in the range of 0.001-0.005 mg/L, except for 2-chlorophenol, which was always above 0.013 mg/L. Relative standard deviation for the spiked water samples ranged from 2.2 to 6.1%, while relative recoveries were in the range of 67.1 to 101.3%.

MeSH terms

  • Acetylation
  • Chlorophenols / analysis*
  • Chlorophenols / chemistry
  • Chlorophenols / isolation & purification
  • Chromatography, Gas / methods*
  • Hexanes / chemistry
  • Lakes / chemistry
  • Limit of Detection
  • Rain / chemistry
  • Reproducibility of Results
  • Water Pollutants, Chemical / analysis*
  • Water Pollutants, Chemical / chemistry
  • Water Pollutants, Chemical / isolation & purification

Substances

  • Chlorophenols
  • Hexanes
  • Water Pollutants, Chemical
  • n-hexane