典型峡谷城市地表灰尘中汞的分布及健康风险评价  

Distribution and health risk assessment of mercury in surface dust in typical valley cities

作　　者：张永江 黄晓容 邓茂 宋卫华 李希希 王莎 ZHANG Yongjiang;HUANG Xiaorong;DENG Mao;SONG Weihua;LI Xixi;WANG Sha(Department of Environment and Quality Test,Chongqing Chemical Industry Vocational College,Chongqing 401220,China;Ecological Environmental Monitoring Station of Qianjiang District in Chongqing,Chongqing 409000,China)

机构地区：[1]重庆化工职业学院环境与质量检测学院,重庆401220 [2]重庆市黔江区生态环境监测站,重庆409000

出　　处：《贵州师范大学学报（自然科学版）》2023年第5期97-101,共5页Journal of Guizhou Normal University：Natural Sciences

基　　金：重庆市教委科学技术研究项目(KJQN202104501);重庆化工职业学院大学生创新创业训练计划项目(HZY202214315020)。

摘　　要：以典型峡谷城市黔江区城区地表灰尘作为研究对象,分析了地表灰尘中汞的分布及健康风险评价。结果表明:黔江城区地表灰尘中汞含量平均值为0.173 mg/kg,高于重庆市主城区地表灰尘中汞的平均含量,为重庆市土壤背景值的3.3倍,表明黔江城区地表灰尘受到一定程度汞污染。地表灰尘中汞对儿童(6~17岁)和成人的总非致癌风险分别为1.90×10^(-3)和4.05×10^(-4),均低于1,儿童的非致癌风险明显高于成人,表明黔江城区地表灰尘中汞对人体的非致癌风险在可接受范围内。从暴露途径来看,地表灰尘中汞通过手-口摄入方式风险最高;从功能区看,商业区地表灰尘中汞的非致癌风险值最大。The source and the possible health risks of mercury were assessed in surface dust Qianjiang District.The results show that the average mercury content in the surface dust of Qianjiang urban area is 0.173 mg/kg,which is higher than the average mercury content in the surface dust of Chongqing urban area and 3.3 times of the background value of Chongqing.That means the surface dust of Qianjiang urban area is contaminated by mercury to a certain extent.According to the results of health risk assessment,there are no significant non-carcinogenic risk of mercury in surface dust of Qianjiang District for adults and children.The total non-carcinogenic risk of mercury in ground dust for children(6~17 years old)and adults were 1.90×10^(-3) and 4.05×10^(-4),respectively,both less than 1.From the perspective of exposure route,the risk of mercury in ground dust is highest through hand-oral ingestion.For different functional areas,the non-carcinogenic risk value of mercury in ground dust in commercial area is the highest.

关 键 词：黔江区 地表灰尘 汞 健康风险 

分 类 号：X820[环境科学与工程—环境工程]