RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2004, Vol. 13 >> Issue (3): 272-276.

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CHARACTERISTICS AND ENVIRONMENTAL EFFECTS OF POLYCHLORINATED\=BIPHENYLS IN SEDIMENTS FROM TAIHU LAKE

YUAN Xu-yin(1，3),WANG Yu(2), SUN Cheng(2), XU Nai-zheng(3),CHEN Jun(1)   

  • Received:1900-01-01 Revised:1900-01-01 Online:2004-05-20
  • Contact: YUAN Xu-yin

Abstract: Six PCB congeners were studied in 43 samples collected in February and August 2000 from Taihu Lake. Most of PCBs for six congeners are detectable in the sediment samples. Among them the concentration of PCB52 is the highest (average 0.983 ng/g), and that of PCB138 is the lowest (average 0.104 ng/g). No pattem was found in the distribution of PCBs in different areas of the lake. PCBs in the sediment samples collected from the center of the lake are not lower than that in other parts of the lake, suggesting that atmospheric transport and deposition can be the major input of PCBs to the lake. PCBs in sediments has nearly no correlations with the organic carbon and nutrient elements in the lake. Based on the sediment quality criteria, PCBs from all samples are lower than the low range of effects. But its potential hazard can not be neglectable as they enrich in organisms through benthic feeder.

Key words: polychlorinated biphenyls, environmental effect, sediment, Taihu Lake

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