Spatial Distribution And Risk Analysis Of Heavy Metals In Taizi River Of Benxi City

Prince Edward River is one of the main rivers in Liaoning Province,flows through Benxi,Yingkou,Anshan and Liaoyang and other cities,for the flow of people through the daily life,production provides water.In particular,Prince Edward River Benxi District,a long time,Prince Edward River Benxi City section of the factory and Benxi residents have produced a large number of industrial waste water and domestic sewage,most of these waste into the Prince Edward River,so that the river and the surface Sediments are heavily polluted.To this end,it is necessary to carry out the spatial distribution and risk analysis of heavy metals in the rivers of Benxi River.In this study,the spatial distribution of heavy metal contents and the comprehensive pollution line were analyzed.In the 20 sampling points,the heavy metal content in the downstream sampling points is generally higher than that in the upstream sampling sites.Most of the heavy metal content in the sampling points can be lower than the national standard of surface water.In this paper,the presence of As,Cu,Zn,Pb and Cd in water was simulated by PHREEQC software.The results show that the main Cu in CuCl2-、CuCl32-、Cu(OH)2 and CuCO3 are the main forms of Cu in the water body of Benxi River in Taizi River,and the main forms of Zn are as follows: Zn2+、Zn(OH)2、ZnCO3 and ZnSO4;Pb is mainly PbCO3、Pb2+、PbOH+、PbSO4;The main forms of Cd are CdCl+、Cd2+、CdCl2、CdSO4;As is the highest content of HAsO42-and H2AsO4.The pollution degree of heavy metals in the surface sediments of Benxi River in Taizi River was evaluated by Cd>Fe>Zn>Cr≈Nn≈Ni>Cu≈Pb.The correlation analysis and cluster analysis of eight heavy metals in the surface sediments of Benxi River in Taizi River are carried out.The results show that there are three heavy metals in heavy metals such as Pb,Cd and Mn in the surface sediments of Benxi River,And homology of Cu and Pb,and Cd,and also have good homology.