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Tang X.,Zhejiang University | Zeng B.,Zhejiang University | Hashmi M.Z.,Zhejiang University | Long D.,Zhejiang University | And 4 more authors.
Chemistry and Ecology | Year: 2014

The emerging issue of electronic wastes (e-waste) and the associated environmental problems has gained considerable attention from the scientific community in recent decades. In the present study, the levels of polybrominated diphenyl ethers (PBDEs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the surface soil obtained from the Taizhou e-waste recycling area of China were investigated. Also the correlation among these chemicals and previously published data of heavy metals, polycyclic aromatic hydrocarbons, and polychlorinated biphenyls was analysed. We determined that the pollution levels of eight PBDEs congeners were serious, ranging from 27.9 to 3128.4 μg/kg. The concentration of PCDD/Fs was in the range of 218.3-3122.2 pg/g with a mean value of 659.5 pg/g. The PBDEs were not well-correlated with organic pollutants (PAHs and PCBs) in soil, whereas PCDD/Fs exhibited a significant positive correlation with the PCBs. The higher levels of persistent organic pollutants may pose potential adverse effects to soil quality and human beings and needs to be properly managed and remediated. © 2013 Taylor & Francis.

Chen T.,Taizhou Environmental Monitoring Center Station | Zhou C.,Taizhou Environmental Monitoring Center Station | Mou Y.-J.,Taizhou Environmental Monitoring Center Station | Yu B.-B.,Taizhou Environmental Monitoring Center Station
Journal of Ecology and Rural Environment | Year: 2011

Concentrations of 8 kinds of PBDE congeners (BDE - 28, BDE - 47, BDE - 99, BDE - 100, BDE - 153, BDE -154, BDE -183, BDE -209) in soils of a typical e-waste disposal lite and its surrounding area in Taizhou, Zhejiang were determined with the accelerated solvent extraction (ASE) - gel permeation chromatography technology (GPC) - GC - MS method, to study concentration level, composition characteristics and vertical distribution of the pollutants in the area. Results show that BDE -209 was the major pollutant, accounting for 90% of the content of the total 8 PBDEs in the soil. The total concentration of the pollutants in soil was higher in the site per se than in its surrounding area, being 0.625 and 0.209 mg • kg-1, respectively. PBDE concentration decreased with the distance from the center of the disposal site.

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