典型农药场地阿特拉津污染风险评价与修复

Health Risk Evaluation and Remediation Strategies for An Abandoned Pesticide Factory Site Contaminated by Atrazine

对我国典型农药厂遗留场地的土壤和土壤气中阿特拉津浓度进行调查,发现阿特拉津浓度超过美国环保局第9区分局“区域筛选值”。污染物检出超标点主要是由生产过程中的污染排放或泄漏造成的,超标点位阿特拉津存在沿土壤垂直剖面向下转移的趋势。以口腔摄入和皮肤接触为暴露途径的健康风险评价的结果表明,该场地存在不可接受的致癌风险和超过安全值的环境风险。

The contamination status of atrazine in soil and soil gas in an abandoned pesticide factory site was investigated. The concentrations of atrazine were above the standards of USEPA Regional Screening Level. Contaminant detection of excess point was mainly caused by the pollution discharge or leakage during the production process. Atrazine at the excess point had a tendency to move down the vertical profile of the soil. The results of the health risk assessment using oral intake and skin exposure pathways indicate that there is an unacceptable risk of carcinogenicity and environmental risk above safety values at the site. By calculating the soil risk control value of the contaminated site, it provided remediation strategies for residential and commercial development.