污染场地人体健康风险评估研究

Assessment on Human Health Risk in Contaminated Sites

以甘肃省某玻璃仪器厂为例,采用污染场地风险评估技术导则(征求意见稿)中评价模型,选取苯为关注污染物,对污染场地5种暴露途径下人体健康风险进行了估算。计算结果表明,污染物各暴露途径的致癌风险贡献从大到小依次为:吸入室外空气中污染物蒸气>吸入室内空气中污染物蒸气>经口摄入>皮肤接触>呼吸吸入土壤颗粒物,联合致癌风险值为7.464 6E-9,小于1×10-6的风险警戒值,致癌风险较小。由于该污染场地将被用作居住用地,建议在建成投入使用后积极做好防护修复措施。

Regarding a glass instrument plant of Gansu province as an example and by using the risk assessment model in contaminated sites technical guideline（draft）,benzene is selected as the attended pollutant and human health risks under 5 ways of exposure in contaminated sites are estimated and calculated.Carcinogenic risks of pollutants under explosure shows in this order： steam inhalation of outdoor air pollutantssteam inhalation of indoor air pollutantsby oral intake ofskin respiratory inhalation of soil particles and the joint carcinogenic risk value is 7.464 6E-9,less than 1×10-6 risk warning value,less risk of cancer.Because this contaminated sites will be used as the habitable land,so it is suggested that the protection and repair measures should be done.