1. PCDDs/PCDFs and PCBs in water samples from the Three Gorge Reservoir
- Author
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Chen, Ji-an, Luo, Jiaohua, Qiu, Zhiqun, Xu, Chuan, Huang, Yujing, Jin, Yi-he, Saito, Normitsu, Yoshida, Toshihiro, Ozawa, Keiichi, Cao, Jia, and Shu, Weiqun
- Subjects
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ORGANOCHLORINE compounds , *POLYCHLORINATED dibenzodioxins , *POLYCHLORINATED biphenyls , *POLYCHLORINATED dibenzofurans , *DIOXINS , *WATER pollution , *RESERVOIRS - Abstract
The Three Gorge Reservoir (TGR) is the largest reservoir in China and its water quality is an important health concern, we have determined the concentrations of PCDDs/PCDFs and PCBs in the water samples collected at three seasons: August 2004, January 2005 and August 2005. The results showed that the average WHO-TEQ of total dioxins-like compounds (PCDDs/PCDFs+PCBs) was 0.06558pgl−1, ranged from 0.0008 to 0.32439pgl−1, which are much lower than other reported water sources. The main dioxins (PCDDs/PCDFs) are hepta- and octa-chlorinated dibenzo-p-dioxins (CDDs) and chlorinated dibenzofurans (CDFs). Since the levels of dioxins may change after the last water-store stage, the present study provides important data to compare the water quality in the TGR in the future. [Copyright &y& Elsevier]
- Published
- 2008
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