Author/Authors :
Ji-an Chen، نويسنده , , Jiaohua Luo، نويسنده , , Zhiqun Qiu، نويسنده , , Chuan Xu، نويسنده , , Yujing Huang، نويسنده , , Yi-he Jin، نويسنده , , Normitsu Saito، نويسنده , , Toshihiro Yoshida، نويسنده , , Keiichi Ozawa، نويسنده , , Jia Cao، نويسنده , , Weiqun Shu، نويسنده ,
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 0.06558 pg l−1, ranged from 0.0008 to 0.32439 pg l−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.
Keywords :
Three Gorge Reservoir , water , PCDDs/PCDFs , PCBs , dioxins
