An eight year (2005-2013) temporal trend of halogenated organic pollutants in fish from the Pearl River Estuary, South China

Marine Pollution Bulletin
Run-Xia SunBi-Xian Mai

Abstract

Dichlorodiphenyltrichloroethane and its metabolites (DDTs), hexachlorocyclohexanes (HCHs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), dechlorane plus (DP), 2,3,5,6-tetrabromo-p-xylene (pTBX) and pentabromotoluene (PBT) were measured in baby croaker (Collichthys lucidus) and mullet (Osteomugil ophuyseni) collected in 2005 and 2013 from the Pearl River Estuary. DDTs, HCHs, PCBs, and PBDEs were detected in two fish species at concentrations of 150-8100, 1.4-120, 22-560, 2.2-280 ng/g lipid wt., respectively. The levels of these chemicals were significantly lower in 2013 than in 2005. The compositions for DDTs, HCHs, and PBDEs in 2013 differed from those in 2005, indicating source changes between the two sampling periods. DP, pTBX and PBT were detected at concentrations of ND-130 ng/g lipid wt. No clear temporal trends were found for these contaminants. Overall, these results indicated the effectiveness of regulations and source controls in substantively reducing inputs of these contaminants to the Pearl River Estuary.

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Citations

Dec 25, 2015·Environmental Science & Technology·Weihong GuoJune-Soo Park
Dec 24, 2015·Chemosphere·Weihong GuoJune-Soo Park
Mar 10, 2016·The Science of the Total Environment·Yihui ZhouÅke Bergman
Oct 16, 2016·Environmental Research·Mehreen IqbalKevin C Jones
Nov 24, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Delia Teresa Sponza, Gökçe Güney
Feb 16, 2020·Environmental Science and Pollution Research International·Yongfeng ShiJonathan Y S Leung

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