典型工业搬迁地块土壤污染状况调查与风险评估  

Investigation and risk assessment of soil pollution in typical relocated industrial sites

作　　者：刘欣 陶燕东 Liu Xin;Tao Yandong(Shandong Weizhou Testing Co.,Ltd.,Weifang 261057,China;Intelligent Perception Technology Innovation Institute of Hohai University,Weifang 261101,China)

机构地区：[1]山东潍州检测有限公司,山东潍坊261057 [2]河海大学智能感知技术创新研究院,山东潍坊261101

出　　处：《环保科技》2024年第1期1-8,共8页Environmental Protection and Technology

基　　金：国家自然科学基金青年基金项目(41807142);潍坊市科技发展计划项目(2018ZJ1022)。

摘　　要：以北方某工业搬迁地块为研究对象,开展地块土壤污染状况调查和风险评估。采集地块内300件土壤样品和15组地下水样品进行检测,采用单因子污染指数法和内梅罗综合污染指数法进行数据分析评价。结果显示地块内地下水中污染物均未超标,土壤中有机污染物氯仿超标,采用单因子指数评价,重金属Pmax均小于1,未造成土壤污染,有机污染物中氯仿Pmax为11.93,造成土壤重度污染。采用内梅罗综合污染指数评价,地块内所有采样点位P综合max最大值氯仿为8.44,土壤的氯仿属于重度污染,地块内重度污染点位占比3.33%,中度污染点位占比3.33%,轻度污染点位占比1.67%,尙清洁的点位占比3.33%,清洁的点位占比88.33%。采用ArcGIS差值模拟分析,氯仿主要污染区域为生产三车间及其周边区域,污染深度0~5.5m范围。对地块开展进一步的风险评估,结果表明:地块内超标点位的污染物氯仿致癌风险范围为1.79E-06~2.40E-05,均大于1.00E-06,致癌风险不可接受,主要暴露途径是通过吸入室内空气中来自下层土壤的气态污染物影响人体健康。本研究对工业搬迁地块的土壤风险管控,特别是化工类的有机污染地块的管控提供科学指导和技术支撑。The paper studied a typical relocated industrial site in Northern China.300 soil samples and 15 groups of groundwater samples were collected from the site for testing.Single factor pollution index and Nemerow comprehensive pollution index were used for data analysis and evaluation.The results showed that the pollutants in the groundwater in the site did not exceed the standard,and the organic pollutant chloroform in the soil exceeded the standard.Using a single factor index evaluation,the P max of heavy metals is less than 1,which does not cause soil pollution.The P max of chloroform in organic pollutants is 11.93,causing severe soil pollution.Using the Nemero Comprehensive Pollution Index evaluation,the comprehensive P max of chloroform at all sampling points in the plot is 8.44.The chloroform in the soil belongs to severe pollution,with severe pollution points accounting for 3.33%,moderate pollution points accounting for 3.33%,mild pollution points accounting for 1.67%,almost-clean points accounting for 3.33%,and clean points accounting for 88.33%.Using ArcGIS Difference Simulation Analysis,the main pollution areas of chloroform are the production workshop 3 and its surrounding areas,with a pollution depth of 0-5.5 meters.Further risk assessment was carried out for the site.According to risk assessment,the carcinogenic risk range of chloroform at the sites exceeding the standard in the site is 1.79E-06~2.40E-05,which is greater than 1.00E-06.The carcinogenic risk is unacceptable.The main exposure is by inhaling gaseous pollutants from the subsoil in the indoor air.This study provides scientific guidance and technical support for soil risk management and control of industrial relocation plots,especially organic chemical pollution sites.

关 键 词：污染地块 单因子污染指数法 内梅罗综合污染指数法 土壤调查和风险评估 

分 类 号：X53[环境科学与工程—环境工程]