摘要
该文选取两个拟规划为居住用地的分别以苯并(a)芘、苯为主要污染物的场地为例,利用场地调查数据,考虑我国居住用地建筑物设计特点,修正室内蒸汽暴露模型,比较了修正前后场地健康风险水平,并根据模型修正前后的致癌风险控制值,讨论了修复目标值的选择.结果表明:模型修正前后,场地A苯并(a)芘室内蒸汽入侵暴露途径的致癌风险由3.8×10^-5减小到3.44×10^-19,场地B苯室内蒸汽入侵暴露途径致癌风险由7.94×10^-5减小到5.34×10^-23;模型修正后,场地A苯并(a)芘致癌风险控制值为0.087 mg/kg,仍远小于第一类用地筛选值,场地B苯的致癌风险控制值为9.26 mg/kg,与《土壤环境质量·建设用地土壤污染风险管控标准(试行)》(GB36600-2018)吻合度较好,因此,对存在其他主要致癌途径的具有挥发特性的污染物,室内蒸汽入侵模型修正对风险控制值的影响较小.
In this paper,two planned residential sites with benzo(a)pyrene and benzene as the main pollutants were selected as examples.Based on site survey data,considering the design characteristics of residential buildings in China,the indoor vapor invasion model was revised,and the health risk levels of the site before and after the modification were compared.The selection of the target values for restoration was discussed according to the carcinogenic risk control values before and after the modification of the model.The results showed that:the carcinogenic risk of indoor vapor invasion exposure pathway of site A benzo(a)pyrene decreased from 3.8×10^-5 to 3.44×10^-19,and that of site B benzo decreased from 7.94×10^-5 to 5.34×10^-23 before and after model modification.The carcinogenic risk control value of site A benzo(a)pyrene was 0.087 mg/kg after model modification,which was still far less than the screening value ofcategory I land use.The risk control value is 9.26 mg/kg,which is in good agreement with the"Soil environmental quality risk control standard for soil contamination of development land"(GB36600-2018).Therefore,for volatile pollutants with other main carcinogenic pathways,the influence of the modification of indoor vapor invasion model on the risk control value is insignificant.
作者
黄凤莲
杜红花
陈跃辉
钟振宇
万勇
HUANG Feng-lian;DU Hong-hua;CHEN Yue-hui;ZHONG Zhen-yu;WAN Yong(Hunan Key Laboratory of Water Pollution Control Technology, Hunan Research Academy of Environmental Sciences,Changsha 410004;College of Environment and Resources, Xiangtan University,Xiangtan 411105 China)
出处
《湘潭大学学报（自然科学版）》
CAS
2020年第1期76-85,共10页
Journal of Xiangtan University(Natural Science Edition)
基金
湖南省教育厅创新平台开放基金项目(17K089)
“环境友好与资源高效利用化工新技术”湖南省高校2011协同创新中心资助项目。
关键词
建筑物结构特点
健康风险评估
污染场地调查
修复方量
苯并(A)芘
苯
building structure characteristics
health risk assessment
contaminated site investigation
remediation volume
benzo(a)pyrene
benzene
