http://dx.doi.org/10.1002/etc.1807">
 

Document Type

Journal Article

Department/Unit

Department of Biology

Title

Persistent organic pollutants in coastal sediment off South China in relation to the importance of anthropogenic inputs

Language

English

Abstract

Surface sediments collected from the coastal region off South China were analyzed for persistent organic pollutants (POPs), including polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs), and organochlorine pesticides (OCPs). The concentrations of BDE-209, Σ12PBDE, Σ15PAH, Σ7PAH, and Σ11OCP were 0.22 to 26.3, 0.01 to 0.77, 13.9 to 271, 6 to 133, and 0.9 to 104ng/g, respectively. The spatial distribution patterns of PBDEs and PAHs suggested that the eastern coastal region was slightly more contaminated than the western coast. In addition, the concentrations of dichlorodiphenyltrichloroethane (DDT) and its metabolites (DDXs) were highly variable, with the highest level found at a site in Zhanjiang Bay, which might have been reflective of the impact of antifouling paints mainly used in boat maintenance in harbor areas. The predominance of BDE-209 in the study region was consistent with the usage pattern of penta-, octa-, and deca-BDEs in China, whereas sediment PAHs appeared to have been derived largely from coal or wood and petroleum combustion. Preliminary assessments indicated that terrestrial inputs, such as atmospheric transport and riverine runoff, may have been the major input pathways for PBDEs and PAHs, respectively, to accumulate in coastal sediment off South China. Conversely, residues of DDT-containing antifouling paints associated with shipping activities and boat maintenance accounted for most of the accumulated sediment DDTs. © 2012 SETAC.

Keywords

Input mechanism, Organochlorine pesticides, Polybrominated diphenyl ethers, Polycyclic aromatic hydrocarbons, Sediment, South China

Publication Date

2012

Source Publication Title

Environmental Toxicology and Chemistry

Volume

31

Issue

6

Start Page

1194

End Page

1201

Publisher

Wiley

ISSN (print)

07307268

ISSN (electronic)

15528618

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