Investigation and assessment on pollution status of heavy metal in sediment of Baiyangdian Lake

Investigation in 2004 about the sediment in Baiyangdian Lake was made. There were 21 monitoring sites,monitoring items were Cu、Zn、Cd、Pb、TN、TP、TOC and pH.By consulting domestic relevant standard,sediment pollute evaluation criterion was set up.The results showed that the sediment pollution from the heavy metal(Cd and Pb) was quite obvious,and most of them were seen.The sediment samples were highly polluted by Cd,pollution endangering order as CdPbZnCu.The synthetic index of sediment pollution was 3.583,which was five grade strong pollution.The bridge of Anxin,SouthLiu village,Tongkou,Liangzhuang,Wangjiazhai were sites which were the most serious in pollution.