![]() ![]() To elucidate the distribution of POPs on global and regional scales, aquatic or marine organisms have been used as bioindicators (4-6). PBDEs have been found to severely contaminate several coastal areas of China, which is mainly attributed to the electronic waste import and dismantling and the manufacturing of decabromodiphenyl ether (1, 3). An estimated 10 000 tons of PCBs were manufactured in Chinabetween 19 and were used primarily as an additive in paint and as a dielectric fluid in transformers (3). *Ĝorresponding author phone: 8610-6284-9334 fax: 8610-62849179 e-mail: Chinese Academy of Sciences.ġ0.1021/es801058u CCC: $40.75 © 2008 American Chemical Society Published on Web Įvidence shows that some OCPs, such as lindane (y-HCH), are still being used in the country (2). Although the usage of OCPs was banned in 1983, OCPs were widely used in China from the 1950s to the 1980s. Other groups of organic contaminants, including polybrominated diphenyl ethers (PBDEs), are considered the next generation of POPs to be included into the treaty due to their similarities to the banned chemicals in regard to health effects as well as their ubiquitous presence in the environment (1). Several organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) have been targeted for restriction or ultimate elimination by the Stockholm Convention on POPs which went into effect in 2004. Persistent organic pollutants (POPs) are of great environmental and health concern. Resultsof principal componentand correlation analyses suggest that Ost and Myt can be used as potential bioindicators of pollution by OCPs, PCBs, and PBDEs of the Chinese Bohai Sea. Concentrations of OCPs, PCBs, and PBDEs correlated negatively with the TL of the selected mollusks. Multivariate linear regression analysis revealed that the most influential factor on the contaminant concentrations in mollusks is the trophic level (TL), followed by the lipid contents. Compared with other species, Ost and Myt possess higher lipid contents and have higher concentrations of OCPs and PBDEs. Seven species of mollusks, including Rapana venosa (Rap), Neverita didyma (Nev), Scapharca subcrenata (Sca), Mytilus edulis (Blue mussel, Myt), Amusium (Amu), Meretix meretrix (Mer), and Crassostrea talienwhanensis (Oyster, Ost) were investigated to select appropriate bioindicators. ![]() Mollusks, including bivalve and gastropod samples, were collected in the summer of 20 to evaluate the spatial patterns of organochlorine pesticides (OCPs), polychlorinated biphenyl (PCBs), and polybrominated biphenyl ethers (PBDEs) in the coastal water of the Chinese Bohai Sea. Revised manuscript received July 3, 2008. QINGHUA ZHANG,+ AND GUIBIN JIANG*1 State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, School of Public Health, University of Illinois at Chicago, Chicago, Ilinois YAWEI WANG,1 THANH WANG,1 AN LI,* JIA N JI E F U, + PU WANG,1 Selection of Bioindicators of Polybrominated Diphenyl Ethers, Polychlorinated Biphenyls, and Organochlorine Pesticides in Mollusks in the Chinese Bohai Sea
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