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

Hong-sheng WANG, Jun DU, Ho-man LEUNG, Anna Oi Wah LEUNG, Peng LIANG, John P. GIESY, Chris K.C. WONG, Ming Hung WONG

Research output: Contribution to journalArticles

28 Citations (Scopus)

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 11.0 ng g-1 (mean 7.9 6ng g-1) in surface and 3.19 to 22.1 ng g-1 (mean 7.75 ng g-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. Copyright © 2011 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)516-522
JournalMarine Pollution Bulletin
Volume63
Issue number5-12
DOIs
Publication statusPublished - 12 Mar 2011

Citation

Wang, H.-S., Du, J., Leung, H.-M., Leung, A. O. W., Liang, P., Giesy, J. P., . . . Wong, M.-H. (2011). Distribution and source apportionments of polychlorinated biphenyls (PCBs) in mariculture sediments from the Pearl River Delta, South China. Marine Pollution Bulletin, 63(5-12), 516-522. doi: 10.1016/j.marpolbul.2011.02.009

Keywords

  • PCBs
  • Mariculture
  • Enrichment percentage
  • Fish feed

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