The species distribution of copper, manganese, zinc and cadmium in water and sediment, and in the body of mollusca and hydrophyte of Lake Xiaonan, a part of West Lake in Hangzhou were reported. Study on the law of transfer and accumulation of the four heavy metals in water etc. has been conducted. The results showed that the major speciations of Cu, Zn, Cd in water phase of Lake Xiaonan are in dissolved forms, which are easily absorbed by organisms, but the major form of Mn is in paniculate. In the sediment, Cu exists mainly in bound to organic matter, Mn and Zn exist in bound to Fe-Mn oxides, Cd exists in bound to carbonates. The total amount in water and in sediment follows the order of Zn>Mn>Cu>Cd and Mn>Cu>Zn>Cd respectively. The heavy metal concentration factors of root and stem and leaf for algae follow the order of Mn>Cu>Zn>Cd. Copper and manganese are accumulated mainly in plant root, and Cu>Zn>Mn>Cd and Cd>Mn>Zn>Cu for the tissue and shell of snail respectively. Copper and zinc are mainly accumulated in the shell of snail.
Shanghai Environmental Science
Heavy metal Water course Transfer Accumulation Lake Xiaonan