Combinatorial biochemical and chemical analyses of polychlorinated dibenzo-p-dioxins and dibenzofurans in agricultural soils from Chongming Island, Shanghai, China

Bull Environ Contam Toxicol. 2015 Feb;94(2):183-7. doi: 10.1007/s00128-015-1456-1. Epub 2015 Jan 7.

Abstract

We compared polychlorinated dibenzo-p-dioxin and dibenzofuran (PCDD/F) concentrations [expressed as toxic equivalent quantities (TEQs)] in agricultural soil samples from Chongming Island (Shanghai, China) determined using two analytical approaches, an enzyme-linked immunoassay (EIA) method and a high resolution gas chromatography-high resolution mass spectrometry (HRGC/HRMS) method. The PCDD/F concentrations in all 31 soil samples were at background levels (7.30-16.7 pg EIA-TEQ/g from the EIA analysis and 0.526-1.99 pg WHO-TEQ/g from the HRGC/HRMS analysis). Although, the EIA method overestimated the PCDD/F concentrations compared with the concentrations determined using the HRGC/HRMS method. The absence of false-negatives showed by the EIA analysis verified that this method is useful for preliminary sample screening (prior to HRGC/HRMS analysis) and the preliminary characterization of potentially contaminated sites.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Agriculture
  • Benzofurans / analysis*
  • Benzofurans / chemistry
  • China
  • Dioxins / analysis*
  • Dioxins / chemistry
  • Environmental Monitoring*
  • Gas Chromatography-Mass Spectrometry
  • Islands
  • Soil / chemistry*

Substances

  • Benzofurans
  • Dioxins
  • Soil
  • dibenzofuran
  • dibenzo(1,4)dioxin