http://dx.doi.org/10.1016/j.marpolbul.2011.02.009">
 

Document Type

Journal Article

Department/Unit

Department of Biology

Title

Distribution and source apportionments of polychlorinated biphenyls (PCBs) in mariculture sediments from the Pearl River Delta, South China

Language

English

Abstract

Surface and core sediments collected from six mariculture farms in the Pearl River Delta (PRD) were analyzed to evaluate contamination levels of polychlorinated biphenyls (PCBs). The ∑PCBs (37 congeners) concentrations ranged from 5.10 to 11.0ngg-1 (mean 7.96ngg-1) in surface and 3.19 to 22.1ngg-1 (mean 7.75ngg-1) in core sediments, respectively. The concentrations were significantly higher than that measured in the sediments of their corresponding reference sites, whereby the average enrichment percentages were 62.0% and 42.7% in surface and core sediments, respectively. Significant correlations (R2=0.77, p<0.05) of PCB homologue group proportions between fish feeds and surface mariculture sediments suggested that fish feed input was probably the main source for the enrichment of PCBs. Due to the fact that PCBs could be transferred along food chains, PCB contamination in fish feeds and mariculture sediments should not be overlooked. © 2011 Elsevier Ltd.

Keywords

Enrichment percentage, Fish feed, Mariculture, PCBs

Publication Date

2011

Source Publication Title

Marine Pollution Bulletin

Volume

63

Issue

12-5

Start Page

516

End Page

522

Publisher

Elsevier

ISSN (print)

0025326X

ISSN (electronic)

18793363

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