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Distribution, historical trends and inventories of polychlorinated biphenyls in sediments from Yangtze River Estuary and adjacent East China Sea.
- Source :
- Environmental Pollution; Oct2012, Vol. 169, p20-26, 7p
- Publication Year :
- 2012
-
Abstract
- A large portion of polychlorinated biphenyls (PCBs) from e-waste released into the coastal areas may be the potential source of PCBs to the global oceans. The paper presents data of PCBs concentrations in fifty surface sediment samples and a dated sediment core in Yangtze River Delta (YRE) and adjacent East China Sea (ECS). The total PCBs levels varied from 5.08 to 19.64 ng/g dry weight, with the highest concentrations situate within the river-sea boundary zone which is so-called “marginal filter”. Concurrent with the operation of e-waste recycling over the last two decades, PCB fluxes started to rise again after 1980s and reached a maximum in this century. The full data set was used to estimate the burden of PCBs in YRE and adjacent ECS. A total sediment burdens were 192.8 tons, with the spatial density of 364 ng/cm<superscript>2</superscript> which accounts for 1.9% of all the PCBs in China. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 02697491
- Volume :
- 169
- Database :
- Supplemental Index
- Journal :
- Environmental Pollution
- Publication Type :
- Academic Journal
- Accession number :
- 77768785
- Full Text :
- https://doi.org/10.1016/j.envpol.2012.05.003