Selective pressurized liquid extraction of polychlorinated biphenyls in sediment

Anal Sci. 2008 Apr;24(4):531-3. doi: 10.2116/analsci.24.531.

Abstract

A selective pressurized liquid extraction procedure (SPLE) was developed for a fast determination of polychlorinated biphenyls in sediment. The final method was performed at 100 degrees C with heptane/dichloromethane (90:10, v/v) as extraction solvent for 2x5 min. Sulfuric acid impregnated silica was placed downstream of the sample in the extraction cell to remove interfering components. This simultaneous extraction/clean-up was performed in 20 min, with an average congener recovery of 92% compared to a classical 24 h Soxhlet methodology and 2 h of external manual clean-up.

MeSH terms

  • Environmental Pollutants / chemistry
  • Environmental Pollutants / isolation & purification*
  • Geologic Sediments / chemistry*
  • Polychlorinated Biphenyls / chemistry
  • Polychlorinated Biphenyls / isolation & purification*
  • Silicon Dioxide / chemistry
  • Sulfuric Acids / chemistry

Substances

  • Environmental Pollutants
  • Sulfuric Acids
  • Silicon Dioxide
  • Polychlorinated Biphenyls
  • sulfuric acid