淮南典型矿区不同塌陷年龄沉陷塘水中微量元素浓度特征及健康风险  

Characteristics of Trace Element Concentration and Health Risk in Subsidence Ponds of Different Subsidence Ages in Huainan Mining Area

作　　者：程晓静 王兴明[1,2,4] 储昭霞[3,4] 王运敏[2] 范廷玉[1] 徐晓平[4,5] Cheng Xiaojing;Wang Xingming;Chu Zhaoxia;Wang Yunmin;Fan Tingyu;Xu Xiaoping(School of Earth and Environment,Anhui University of Science and Technology,Huainan,Anhui 232001,China;State Key Laboratory of Safety and Health for Metal Mines,Sinosteel Maanshan General Institute of Mining Research Company Limited,Maanshan,Anhui 243000,China;Key Laboratory of Bioresource and Environmental Biotechnology of Anhui Higher Education Institutes,Huainan Normal University,Huainan,Anhui 232038,China;Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education,Anhui Normal University,Wuhu,Anhui 241000,China;School of Architecture and Engineering,Anhui Polytechnic University,Wuhu,Anhui 230009,China)

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232000 [2]金属矿山安全与健康国家重点实验室中钢集团马鞍山矿山研究总院有限公司,安徽马鞍山243000 [3]资源与环境生物技术安徽普通高校重点实验室淮南师范学院,安徽淮南232038 [4]皖江流域退化生态系统的恢复与重建省部共建协同创新中心安徽师范大学,安徽芜湖241000 [5]安徽工程大学建筑工程学院,安徽芜湖241009

出　　处：《水土保持通报》2022年第2期74-81,88,共9页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目“生物炭重构蚓触圈微环境下污泥—蚯蚓多界面重金属迁移转化机理研究”(51878004);国家自然科学基金项目(51978001);中国工程院战略研究与咨询项目(2021-XZ-17);金属矿山安全与健康国家重点实验室开放基金项目(2020-JSKSSYS-02);安徽高校协同创新项目(GXXT-2020-075);研究生创新项目(2020CX2006)。

摘　　要：[目的]研究淮南典型矿区不同年龄沉陷塘水体5种微量元素Mn,Ni,V,As和Cr浓度变化特征及来源,旨在为采煤沉陷区微量元素风险管控、沉陷塘水环境污染治理提供科学参考和依据。[方法]测定水样的微量元素Mn,Ni,V,As和Cr的含量,运用Pearson相关性和主成分析法识别微量元素的来源,同时采用美国环境保护局(USEPA)推荐的健康风险模型对其进行健康风险评价。[结果]①沉陷塘水体微量元素As和Cr的含量符合中国地表水Ⅱ类水质标准,元素Mn,Ni和V的含量在中国地表水环境质量标准限值之内。②不同塌陷年龄沉陷水体微量元素总体变化趋势表现为:青年矿>老年矿>中年矿,随塌陷年龄增加,研究区沉陷水体微量元素含量整体上呈下降趋势。③不同年龄塌陷水体通过饮水途径摄入的非致癌健康风险不会对人体健康产生影响。不同年龄塌陷水体致癌元素(As,Cr,Ni)成人和儿童年均致癌健康风险值在可接受范围内,其中青年矿元素As的致癌风险值相对较大,接近USEPA限值。[结论]受采煤活动影响,煤矿开采初期,沉陷水体微量元素浓度较大,应做好敏感微量元素治理和安全风险管控;随塌陷年龄越加,沉陷塘水体的微量元素对人体产生的健康风险越小。[Objective]The variation characteristics and sources of five trace elements Mn,Ni,V,As and Cr in subsidence ponds of different ages in typical mining areas in Huainan were studied in order to provide scientific reference and basis for the risk management,trace elements control in subsidence ponds from coal mining subsidence areas.[Methods]The contents of trace elements Mn,Ni,V,As and Cr in the water samples were determined by ICP-MS.The sources of trace elements were evaluated by pearson correlation and principal component analysis.Meanwhile,the health risk assessment model recommended by the United States Environmental Protection Agency(USEPA)was used to assess the health risks of the elements in subsidence ponds.[Results]①The contents of trace elements Mn,Ni and V in subsidence pond water with different collapse ages were in line with the limits of Chinese surface water environmental quality standards,and the contents of As and Cr met the water quality standards classⅡof China surface water.②The general trend of trace elements in subsidence water showed as:young mine>old mine>middle-aged mine.The contents of trace elements in the subsidence decreased with the increasing age of subsidence ponds.③The non-carcinogenic health risk of subsidence water of different ages through drinking water intake would not affect human health.While the carcinogenic elements(As,Cr,Ni)in water bodies of different ages,their average annual carcinogenic health risk values for adult and children was within the acceptable range.Among them,the carcinogenic risk value of As in young mine was much higher,which was close to the USEPA limit.[Conclusion]Due to the coal mining activities,the concentrations of trace elements in the subsidence water reaches the maximum values in the initial stage of coal mining.Therefore,it is necessary to control the risk from sensitive trace elements during initial period of coal mining.The health risk caused by trace elements in the water of subsidence ponds decreased with the increasing subsidence ag

关 键 词：淮南矿区 采煤塌陷塘 塌陷年龄 微量元素 健康风险评价 

分 类 号：X52[环境科学与工程—环境工程] X82