不同毒性评估模型用于变电站场地土壤中多环芳烃健康风险评价比较 |
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引用本文: | 车凯,郁金星,刘克成,杨鹏,范辉,魏明磊,牛向楠,侯海萍.不同毒性评估模型用于变电站场地土壤中多环芳烃健康风险评价比较[J].环境工程,2022,40(1):128-134. |
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作者姓名: | 车凯 郁金星 刘克成 杨鹏 范辉 魏明磊 牛向楠 侯海萍 |
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作者单位: | 1. 国网河北省电力有限公司 电力科学研究院, 石家庄 050021; |
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基金项目: | 国家电网公司总部科技项目“变电站土壤环境污染风险评估与无害化处置关键技术研究”(5204DY19000A); |
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摘 要: | 对衡水地区9座变电站场地土壤中16种优先控制的多环芳烃(PAHs)含量进行了检测和分析,并采用场地健康风险评价方法,对比了基于苯并a]芘(BaP)的毒性评估模型和基于致癌斜率因子(非致癌参考剂量)的健康风险评估模型.结果显示:变电站场地土壤中PAHs总量在126.89~1181.94 μg/kg,7种致癌PAHs含量...
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关 键 词: | 变电站 土壤 多环芳烃 毒性评估模型 风险评价 |
收稿时间: | 2021-03-17 |
COMPARATIVE STUDY OF DIFFERENT TOXICITY EVALUATION MODELS ON HEALTH RISK ASSESSMENT OF PAHS IN SOIL OF TYPICAL SUBSTATION SITES |
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Institution: | 1. State Grid Hebei Electric Power Research Institute, Shijiazhuang 050021, China;2. State Grid Hebei Electric Power Company, Shijiazhuang 050021, China |
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Abstract: | The concentrations of 16 priority PAHs in soil of 9 substations in Hengshui, Heibei province were detected and analyzed. Health risk assessment method for contaminated site was used to compare the health risk based on BaP carcinogenic slope factor and carcinogenic slope factor(non-carcinogenic reference dose). The results showed that the total amount of PAHs in the soil of the substation site ranged from 126.89 μg/kg to 1181.94 μg/kg, and the contents of seven carcinogenic PAHs ranged from 60.07 μg/kg to 698.5 μg/kg. The pollution level showed that the substation with mild or no pollution accounted for 66.7%, and the substation with moderate pollution level or above accounted for 33.3%. Both models showed that some of the substations had carcinogenic risk, and oral ingestion and skin contact exposure were the main ways of exposure to carcinogenic risk, with cumulative contribution rate of 91% above. The results of the two models showed that the total non-carcinogenic risk quotient of soil was smaller than the acceptable non-carcinogenic risk quotient, and the BAP toxicity assessment model would lead to a small risk quotient, which was not suitable for the risk assessment of non-carcinogenic substances. From the perspective of environmental risk control, it was considered that the health risk assessment model based on carcinogenic slope factor(non-carcinogenic reference dose) was more suitable for the health risk assessment of the contaminated soil. |
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