Abstract:

In order to understand different season variation of heavy metals contents, contents of heavy metals such as Ni, Cr, Cd, Cu, Pb and Zn in sediments of Changshou Lake were monitored continuously through high-water period, normal-water period and low-water period. The influence factors of heavy metals on the contents were also investigated. It was found that heavy metals in the sediment showed obviously seasonal variation characteristics. The maximum of heavy metals in Shoudao, with high level of eutrophication, appeared in normal period. The author also studied mainly that pH influences on the contents of heavy metals in sediments, the conclusion was that contents of heavy metals and pH had a positive correlated relationship.