Study on Form Distribution and Correlation of Heavy Metals in the Sediment of Urban Water
Xu Ying Lu Jing-ling State Key Laboratory of Hydrology-Water Resources and College of Environment Science and Engineering Hydraulic Engineering Hohai University Hohai University Nanjing, China Nanjing, China ******@hhu. xyhohai@ Abstract—With the Tessier Five-step Continuous Extracting pollutants in the sediment in order to protect the water Method, the thesis studied the form distribution of heavy metals ecological environment. in the sediment samples collected from Mochou Lake, Xuanwu Lake and Qinhuai River in Nanjing, analyzed the correlation The biological validity and potential migratory aptitude of between leaching contents of heavy metals and various forms heavy metals are not only related to its total amount, but also, and between content anic matter and leachability of heavy to a greater extent, determined by its occurrence mode in the metals and anic matter anic fraction, and environment. Therefore, studying the form distribution of primarily investigated the mechanism of bination of heavy metals could provide more details of its potential organic matter and heavy metal through the infrared spectrum. migratory aptitude and biological applicability. A great The results indicate that, in the sediment, Pb, Cu, Zn, Ni and Cr number of experime
