title: Combinatorial biochemical and chemical analyses of polychlorinated dibenzo-p-dioxins and dibenzofurans in agricultural soils from Chongming Island, Shanghai, China.
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.
authors.affiliation: Bioassay and Safety Assessment Laboratory, Shanghai Academy of Public Measurement, Shanghai, 201203, People's Republic of China, dengyy@apm.sh.cn.
authors.forename: Y Y
authors.initials: YY
authors.lastname: Deng
authors.forename: L J
authors.initials: LJ
authors.lastname: Jia
authors.forename: K
authors.initials: K
authors.lastname: Zhang
authors.forename: H W
authors.initials: HW
authors.lastname: Yin
mesh_terms: D000383:Agriculture; D001572:Benzofurans / Q000032:analysis* / Q000737:chemistry; D002681:China; D004147:Dioxins / Q000032:analysis* / Q000737:chemistry; D004784:Environmental Monitoring; D008401:Gas Chromatography-Mass Spectrometry; D062312:Islands; D012987:Soil / Q000737:chemistry*
chemical_list: D001572:Benzofurans; D004147:Dioxins; D012987:Soil; C023614:dibenzofuran; C020887:dibenzo(1,4)dioxin