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对胶东半岛红富士苹果园土壤和果实的重金属镉(Cd)、铅(Pb)、铬(Cr)、砷(As)、铜(Cu)含量进行测定,采用Nemerow指数法对土壤重金属污染进行评价。结果表明:采样区土壤普遍存在镉轻度污染现象,铅、铬、砷、铜元素为安全等级,土壤综合污染程度均为轻污染;化工厂附近果园土壤砷含量高于其他采样区,果实样品各元素含量均符合无公害食品重金属含量标准;苹果园土壤中重金属含量与土壤有机质含量和果实重金属含量之间相关性均不明显。
The contents of Cd, Pb, As and Cu in soil and fruits of Red Fuji apple orchard were measured in the Jiaodong Peninsula. The Nemerow index was used to evaluate the soil heavy metal pollution . The results showed that there was widespread cadmium pollution in the sampling area. Lead, chromium, arsenic and copper were safe grade and light pollution in soil. The contents of arsenic in orchard soil near the chemical plant were higher than those in other sampling areas. The contents of all the elements were in line with the standards of heavy metal pollution-free food; the correlation between heavy metal content in apple orchard soil and soil organic matter content and fruit heavy metal content was insignificant.