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《Journal of Hohai University(Natural Sciences)》 2006-01
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Spatial distribution of heavy metals in sediments of Liyun River

TANG Hong-liang~1,WANG Chao~1,LI Yong~1,BAO Gang~2,ZHU Zhi-qing~2,XU Yun~3(1.College of Environmental Science and Engineering,Hohai University,Nanjing 210098,China;2.Huai'an Water Conservancy Bureau,Huai'an 223005,China;3.College of pharmacy,Nanjing University of Chinese Medicine,Nanjing 210046,China)  
Based on a sampling analysis of sediments in the Liyun River flowing through the suburb of Huai'an City,the longitudinal,vertical and transversal distributions of heavy metals in sediments,including cadmium,arsenic and sulfide,as well as the causes and characteristics of their distribution,were revealed.Some conclusions are drawn from the study: the quality fraction of cadmium at each monitoring point is greater than its background value in soil of Huai'an suburb,and the maximum at monitoring points is 15.73 times of the background value;the quality fractions of arsenic and sulfide are decreasing along the river,but the average values of arsenic at the sections of Yinhe Road and the paper plant are beyond their background values in soil;the maximum quality fraction of arsenic is 2.45 times as high as that of soil of grade-III,and the quality fraction of sulfide at the section of Yinhe Road is much higher than that of the other three sections.The quality fractions of heavy metals in the middle of black mud layers are the highest in vertical direction,and the pollution caused by heavy metals at the riverbank is more serious than that at the center of the river at the same profile of polluted sections.
【Fund】: 国家“973”计划资助项目(2002CB412303);; 国家“863”计划资助项目(2002AA601012)
【CateGory Index】: X832
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