| 鄱阳湖流域上游铀尾矿库周边水体中铬形态及健康风险评估 |
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| 引用本文： | 易玲,高柏,丁小燕,马文洁,杜超超,樊骅,李艳梅.鄱阳湖流域上游铀尾矿库周边水体中铬形态及健康风险评估[J].湖泊科学,2020,32(1):79-88. |
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| 作者姓名： | 易玲 高柏 丁小燕 马文洁 杜超超 樊骅 李艳梅 |
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| 作者单位： | 东华理工大学核资源与环境国家重点实验室,水资源与环境工程学院,南昌330013;中国科学院南京土壤研究所,南京210008 |
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| 基金项目： | 国家自然科学基金项目（41362011，41502235）和江西省重点研发计划项目（20181ACG70023）联合资助. |
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| 摘 要： | 以鄱阳湖流域上游铀尾矿库周边水体为研究对象,在研究铬(Cr)污染程度的基础上,采用水文地球化学模拟软件PHREEQC计算Cr各不同赋存形态的浓度,讨论不同条件下Cr形态的变换规律以及健康风险评价,对研究水体中Cr生物有效性具有实际意义.结果表明:铀尾矿区排放水、渗滤水、浅层地下水中Cr浓度均未超出相关标准值.水体中Cr主要赋存形态大多为Cr(Ⅲ)的水解产物Cr(OH)~(2+)和Cr(OH)_2~+. pH和电子活度(pe)共同影响Cr在水体中的赋存形态,当pH=3～5时,以CrF~(2+)为优势离子;当pH5时,随pH递增,pe值对Cr赋存形态的影响增加,pe值增大,Cr(Ⅲ)水解产物浓度逐渐减少,而Cr(Ⅵ)氧化产物逐渐增加.浅层地下水中的Cr不会对人体产生致癌风险和非致癌风险,但当p H、pe变化时,Cr致癌风险系数均高于ICRP和USEPA推荐的最大可接受值.由于Cr(Ⅵ)的毒性远强于Cr(Ⅲ),故应密切关注水体中pe与pH值,避免污染加重.
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| 关 键 词： | 铬(Cr) PHREEQC 赋存形态 风险评价 鄱阳湖流域 |
| 收稿时间： | 2019/2/17 0:00:00 |
| 修稿时间： | 2019/8/27 0:00:00 |
Species and health risk assessment of chromium around uranium tailing pond in the upper reaches of Lake Poyang Basin |
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| YI Ling,GAO Bai,DING Xiaoyan,MA Wenjie,DU Chaochao,FAN Hua and LI Yanmei.Species and health risk assessment of chromium around uranium tailing pond in the upper reaches of Lake Poyang Basin[J].Journal of Lake Science,2020,32(1):79-88. |
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| Authors: | YI Ling GAO Bai DING Xiaoyan MA Wenjie DU Chaochao FAN Hua and LI Yanmei |
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| Institution: | State Key Laboratory of Nuclear Resources and Environment, School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, P. R. China,State Key Laboratory of Nuclear Resources and Environment, School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, P. R. China,Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, P. R. China,State Key Laboratory of Nuclear Resources and Environment, School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, P. R. China,State Key Laboratory of Nuclear Resources and Environment, School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, P. R. China,State Key Laboratory of Nuclear Resources and Environment, School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, P. R. China and State Key Laboratory of Nuclear Resources and Environment, School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, P. R. China |
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| Abstract: | |
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| Keywords: | Chromium(Cr) PHREEQC speciation risk assessment Lake Poyang Basin |
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