吉林省部分河流与湖泊表层沉积物中重金属的分布规律研究

he water chemical component in rivers is various and unconstant, but it changes slowly in lakes. Even under the similar climatic condition and geochemical condition, the water chemical component of rivers and lakes is different and make the distribution of heavy metals in the sediments different. The distribution of heavy metals in the sediments in parts of rivers and lakes in Jilin Province was studied by the methods of binding form analysis, correlation analysis and geoaccumulation index. The results showed that the amounts of the form of heavy metals available speciations in Yitong River and South Lake is large, and has much higher potential ecological hazards. Pb and Cu mainly accumulated in organic forms, Cu, Pb and Zn are significantly correlated with pH in river sediments, but not in lake sediments. Compare with heavy metals in the sediments of lakes, serious pollution of heavy metals exists in that of rivers, which belongs to stronger pollution according to Geoaccumulation Ind