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对山东德州地区农业土壤中铜、锌、铅、镉4种重金属元素含量进行测定,并按《土壤环境质量标准》(GB15618-1995)以及《农田土壤环境质量监测规范》规定的土壤污染分级标准来评定,结论为:按一级的土壤背景值标准,这几种元素单点几乎都有超标,污染贡献为:镉>锌>铅>铜,其中镉污染最大,应值得注意;按二级的一般农田耕地土壤环境质量标准,只有Cd有4个采样点超标,其他都远低于0.7的临界值,完全符合要求。
The contents of four heavy metals such as copper, zinc, lead and cadmium in agricultural soils in Dezhou, Shandong Province were determined and classified according to Soil Environmental Quality Standard (GB15618-1995) and the soil pollution classification standard of Farmland Soil Environmental Quality Monitoring Code The conclusions are as follows: According to the first-level soil background value standard, almost all of these elements have exceeded the standard, the contribution of pollution is: cadmium> zinc> lead> copper, of which cadmium pollution is the largest and should be noted; General farmland soil environmental quality standards, only the Cd 4 sampling points exceeded, others are far below the critical value of 0.7, fully meet the requirements.