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Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Characteristic and potential sources of polychlorinated dibenzo-p-dioxins and dibenzofurans in agricultural soils in beijing, china

Language

English

Abstract

Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were analyzed in 25 background and 80 agricultural soil samples collected from 21 sites in Beijing, China. The levels of PCDD/Fs in the north agricultural soils were low (0.15-0.58ng international toxic equivalent quantity [I-TEQ]/kg), which were comparable with those of the background soils (0.091-0.35ng I-TEQ/kg). In the southern agricultural soils, however, concentrations were several times higher (0.27-3.3ng I-TEQ/kg). Comparison of PCDD/Fs congener compositions between possible sources and samples indicated that agricultural soils in Beijing had not been contaminated by the 3 main PCDD/F contamination sources in China-ferrous and nonferrous metal, waste incineration, and power generation. They had, however, been slightly contaminated by the impurities of some organochlorine pesticides, such as sodium pentachlorophenate, and by open burning of biomass, vehicle exhaust, atmospheric deposition, sediment, and sewage sludge. These results have been supported by the principal components analysis. © 2014 SETAC.

Keywords

Agricultural soils, Beijing, Contamination source, Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs)

Publication Date

2014

Source Publication Title

Environmental Toxicology And Chemistry

Volume

33

Issue

9

Start Page

2004

End Page

2012

Publisher

Wiley

ISSN (print)

07307268

ISSN (electronic)

15528618

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