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目的对江阴市农田土壤中重金属铅、镉及寄生卵的污染进行调查,为客观评价农村土壤卫生状况提供科学依据。方法对江阴市的15个镇(街道)的60个行政村的农田土壤进行采样分析。结果以国家《土壤环境质量标准》(GB 15618-1995)二级标准作为评价标准,只有一个土样中镉含量超过国家标准限值,达标准限值的1.10倍,为轻度污染,其余土样均在国家二级标准的限值范围内。以当地的背景值作为评价依据,有63.33%的铅和31.67%的镉均超过背景值;11.67%的农田土壤中检出活的寄生虫卵。结论江阴市农田土壤总体受到轻度重金属污染,应当加强管理和防范工作。
Objective To investigate the pollution of heavy metal lead, cadmium and parasitic eggs in farmland soils in Jiangyin City and provide a scientific basis for objective assessment of rural soil health status. Methods Sampling and analysis of farmland soil in 60 administrative villages in 15 towns (streets) in Jiangyin City was conducted. Results According to the secondary standard of National Soil Environmental Quality Standard (GB 15618-1995), only cadmium content in one soil sample exceeded the national standard limit of 1.10 times of the standard limit, which was light pollution. The remaining soil Sample are in the national secondary standard limits. Based on the local background value, 63.33% lead and 31.67% cadmium exceeded the background value; live parasite eggs were detected in 11.67% of the farmland soil. Conclusion The soil of farmland in Jiangyin is generally polluted by light heavy metals, and the management and prevention should be strengthened.