安徽省池州市拟建蔬菜生产基地土壤重金属含量的监测分析与评价

[目的]了解安徽省池州市拟建蔬菜基地的土壤重金属含量情况。[方法]选取30个拟建蔬菜基地,对其土壤进行重金属镉、铅、汞、砷含量的抽样监测与分析,将被测区域内土壤各项重金属的含量与GB/T 18407.1—2001《农产品质量安全无公害蔬菜产地环境要求》规定的限量值进行比较,对池州市拟建蔬菜基地土壤重金属的环境质量状况进行监测分析与评价。[结果]监测区域内土壤重金属铅、砷、汞的平均含量均低于GB/T 18407.1—2001《农产品质量安全无公害蔬菜产地环境要求》规定的限量值,但是部分监测点区域内的重金属镉处于超标状况,特别是贵池区沿江地区重金属镉超标比较普遍,不适合建无公害蔬菜生产基地。[结论]该研究可为池州市蔬菜基地的发展与定位提供技术依据。

Monitoring Analysis and Evaluation of Soil Heavy Metal Content in Proposed Vegetable Production Base in Chizhou City of Anhui Province

Objective] To find the soil heavy metal content in proposed vegetable production base in Chizhou City of Anhui Province .[Method] A total of 30 proposed vegetable production bases were selected.Heavy metals (lead, cadmium, arsenic and mercury) contents in soil were mo-nitored and analyzed.The heavy metal contents in detection region were compared with the limit values regulated in GB/T 18407.1—2001 Safety Qualification for Agricultural Product-Environmental Requirements for Origin of Non-environmental Pollution Vegetable.Environmental quality con-dition of soil heavy metal in proposed vegetable production bases were monitored and evaluated.[Result] The average contents of lead, arsenic and mercury in soil heavy metals were lower than the limit values in GB/T 18407 .1—2001 Safety Qualification for Agricultural Product-Environ-mental Requirements for Origin of Non-environmental Pollution Vegetable.However, cadmium contents in some monitoring sites exceeded the standard, especially in the areas along the Yangtze River in Guichi Region.Therefore, these areas were not suitable to establish pollution-free vegetable production base.[Conclusion] This research provides technical base for the development and orientation of vegetable production base in Chizhou City.