摘要
在某化工企业厂界内及周边布设9个土壤点位,对其二噁英进行检测与分析,依据《污染场地风险评估技术导则》对土壤中二噁英进行健康风险评估。结果表明,9个土壤点位二噁英毒性当量浓度为3.72~20.3 pg/g,均值为9.1 pg/g,均处于安全水平;在经口摄入、皮肤接触和吸入土壤颗粒物3种暴露途径下,只有4#点位具有较低的致癌风险;4#点位代表的场地区域为风险不可接受的污染区域,基于致癌效应的土壤风险控制值为1.84×10-5mg/kg。提出,应尽快研究并制定土壤中二噁英的标准限值。
9 soil sampling points were set in and around a chemical company and dioxin in these samples were detected and analyzed. The health risk of dioxin in soil were evaluated according to “ Technical guidelines for risk assessment of contaminated sites”. Theresults showed that theccnccntration of dioxins ranged from 3. 72 to 20. 3 pg/g I-TTEQ , which indicates a safe level. Under the three exposed ways of mouth intaking,skin contacting and inhaling soil particles,onlypoint No. 4 showed low carcinogenic risk. This site represents unacceptable risk pdution area. Its sthe carcinogenic effct was 1. 84 x 10. 5mg/kg. It is neccssary that study on and standardizing thecshould be taken as soon as possible.
出处
《环境监控与预警》
2017年第6期59-63,共5页
Environmental Monitoring and Forewarning
基金
江苏省环保科研课题基金资助项目(2014013)
江苏省环境监测科研基金资助项目(1607)
