大庆城区土壤重金属污染及相关性分析

以大庆市城区土壤为例，经过野外调查取样和室内分析，对大庆市城区土壤重金属污染及相关性进行了研究。采用的主要方法有：玻璃电极法，重铬酸钾法，统计学方法等。结果表明：大庆市土壤重金属污染的最主要贡献因子为Cd。在农牧业区和采油区重金属元素之间及重金属与土壤理化性质之间均不存在相关性；在工业区，仅有Pb、Cd和Zn与有机质之间存在相关关系；在生活区有6对重金属元素之间存在相关关系。造成这一结果的原因主要是人为活动的影响。

Analysis on Pollution and Correlation of Heavy Metals in Soil in Daqing City

The paper researched on the soils of heavy metals pollution and correlation in Daqing city, Heilongjiang Province through sampling outside and analysis indoor. The main methods are: glass-electrodes method, potassium dichromate method and statistical method. The result shows that Cd is the major contribution factor in Daqing city. Correlation doesn’t exist among heavy metal elements as well as heavy metal elements and physics-chemical nature, both in pastoral areas and in oil extraction area. As to industrial area, correlation exists between Pb and Cd, and also between Zn and organic matter. In living area, 6 pairs of heavy metal elements are correlative. It is manmade activity that led to the situation.