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目的了解新乡市农村土壤中铅、镉含量,评价农村环境卫生状况,为制定政策措施提供依据和基础资料。方法随机选取两个县40个行政村,每村采集土壤一份,进行土壤颜色、PH值、根系和蛔虫卵等基本卫生学检查,并进行重金属铅和镉的检测。结果两县土壤样本中铅含量均未超过一级土壤标准限值(铅≤35 mg/kg)。土壤中大多数(95%)镉未超过土壤二级标准。但是A县铅、镉含量显著高于B县。在两个县仅仅在一份样本检测到蛔虫卵。结论本次调查两县土壤铅、镉含量未超过国家标准,虽然没有发现明显的污染,但是应该注:意监控。
Objective To understand the contents of lead and cadmium in the soil of rural areas in Xinxiang City, assess the status of rural environmental health and provide the basis and basic information for the formulation of policies and measures. Methods A total of 40 administrative villages in two counties were randomly selected. One soil was collected from each village, and basic hygiene tests such as soil color, PH value, root system and roundworm eggs were carried out, and the detection of heavy metal lead and cadmium was carried out. Results The lead content of soil samples in both counties did not exceed the first-level soil standard limit (Pb ≤ 35 mg / kg). Most (95%) cadmium in soils does not exceed soil secondary standard. However, the lead and cadmium contents in county A were significantly higher than those in county B. Ascaris eggs were detected in only one sample in two counties. Conclusion The contents of lead and cadmium in the two counties in this survey did not exceed the national standards. Although no obvious pollution was found, it should be noted: