某关停冶炼企业遗留场地重金属生态与人体健康风险评价  

Ecological and Human Health Risk Assessment of Heavy Metals in the Land Left by a Closed Smelting Enterprise

作　　者：肖粤 贺秋华 王明明 李星 钟甜甜 刘陈 XIAO Yue;HE Qiuhua;WANG Mingming;LI Xing;ZHONG Tiantian;LIU Chen(School of Resources Environment and Safety Engineering,University of South China,Hengyang,Hunan 421001,China;Hengyang Key Laboratory of Soil Pollution Control and Remediation,Hengyang,Hunan 421001,China)

机构地区：[1]南华大学资源环境与安全工程学院,湖南衡阳421001 [2]衡阳市土壤污染控制与修复重点实验室,湖南衡阳421001

出　　处：《南华大学学报(自然科学版)》2024年第6期19-26,共8页Journal of University of South China:Science and Technology

基　　金：国家自然科学基金资助项目(12375311)。

摘　　要：本文以某关停冶炼企业遗留场地重金属为研究对象,为清楚了解土壤中重金属污染情况,分区布点取样检测并分析土壤中重金属质量分数水平,采用反距离权重差值法等方法处理数据,从生态风险与人体健康风险两方面深入探讨重金属的影响。结果表明:该场地中存在不同程度As、Sb、Pb、Cr(Ⅵ)污染,重金属区域分布与企业生产活动关系明显;场地土壤重金属单因子潜在生态风险:As>Pb>Sb>Cr(Ⅵ),综合潜在生态风险处于中等水平;经口摄入途径重金属致癌风险与非致癌危害商均大于其他途径,As致癌风险与非致癌危害商分别为1.18×10^(-4)、4.60,贡献率均高于其他重金属。In this paper,heavy metals in the land left over by a closed smelting enterprise were taken as the research object.In order to clearly understand the heavy metal pollution in the soil,sampling detection and analysis of the heavy metal content were carried out at different locations.The inverse distance weight difference method was used to process the data,and the impact of heavy metals on ecological risks and human health risks was further discussed.The results showed that there were As,Sb,Pb and Cr(Ⅵ)pollution in different degrees in this field,and the regional distribution of heavy metals was obviously related to the production activities of enterprise.The single factor potential ecological risk of soil heavy metals was As>Pb>Sb>Cr(Ⅵ),and the comprehensive potential ecological risk was at a medium level.The carcinogenic risk and non-carcinogenic hazard quotient of heavy metals through oral ingestion were higher than those of other ways,the carcinogenic risk and non-carcinogenic hazard quotien of As were 1.18×10-4 and 4.60,respectively,and the contribution rates were higher than those of other heavy metals.

关 键 词：重金属污染 生态风险 健康风险 

分 类 号：X53[环境科学与工程—环境工程] X820.4