基于蒙特卡罗模拟和相对生物有效性的锑矿区健康风险评估  

Health risk assessment for antimony mining area based on Monte Carlo simulation and relative bioavailability

作　　者：谢青 任伯帜[2] XIE Qing;REN Bozhi(School of Resources,Environment and Safe Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;School of Earth Sciences and Spatial Information Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湘潭411201 [2]湖南科技大学地球科学与空间信息工程学院,湘潭411201

出　　处：《中国有色金属学报》2025年第1期336-352,共17页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(41973078);湖南省科技厅重点研发计划资助项目(2022SK2073)。

摘　　要：通过系统采集和分析锡矿山地区181个土壤样品中潜在有毒元素(PTEs)浓度,基于传统健康风险评估方法和概率方法开展风险评估。除Pb外,土壤中Zn、Cd、Hg、As、Mn和Sb的含量均超过湖南省背景值。结果表明:采用传统健康风险评估方法时,土壤中PTEs对成人与儿童存在非致癌和致癌风险,其总非致癌风险均值分别为3.92和2.00,致癌风险均值为3.09×10^(-3)和1.69×10^(-3)。土壤样品的非致癌和致癌风险率达100%,实际的健康风险水平被高估。采用概率方法评估时,总非致癌风险均值分别为1.74和1.03,大于风险值1的概率为34.80%和21.83%;总致癌风险均值分别为2.63×10^(-4)和6.80×10^(-4),存在不可接受风险概率为36.92%和52.72%。在采用概率方法评估时引入RBA后,非致癌风险可忽略不计,不可接受致癌风险率降幅达50%。此外,经口摄入土壤是主要的暴露途径,儿童皮肤表面黏着系数对健康风险影响较大。Through systematically collecting and analyzing the PTEs contents of 181 soil samples in the Xikuangshan area,the health risks were assessed based on the traditional health risk assessment model and probabilistic method.Except for Pb,the average contents of Zn,Cd,Hg,As,Mn and Sb in soil excess the soil background values of Hunan Province.The results of traditional risk assessment show that soil PTEs pose noncarcinogenic and unacceptable carcinogenic risks to adults and children,with the average THI values of 3.92 and 2.00,and average TCR of 3.09×10^(−3) and 1.69×10^(−3).All sampling sites excess the limits of non-carcinogenic and carcinogenic risk,which overestimates the actual level of risk.The average values of THI for adults and children obtained by probabilistic risk assessment are 1.74 and 1.03,with the over-risk rates of 34.80%and 21.83%.While mean TCR are 2.63×10^(−4) and 6.80×10^(−4),with the rates of unacceptable risk of 36.92%and 52.72%.With the introduction of RBA,non-carcinogenic risk is negligible,and probability of unacceptable carcinogenic risk is reduced by 50%.In addition,oral ingestion of soil is the main exposure pathway,and the skin surface adhesion coefficient(SARc)of children is the main impact factor for health risk.

关 键 词：锑矿区 土壤PTEs 概率风险评估 相对生物有效性(RBA) 参数修正 

分 类 号：X53[环境科学与工程—环境工程]