| 黄河干流表层沉积物中重金属形态分析与风险评价 |
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| 引用本文： | 郭晓楠, 于淼成, 孟颖, 袁庆科, 谢馥宇, 王义兵, 张大磊, 张鉴达, 栾富波. 黄河干流表层沉积物中重金属形态分析与风险评价[J]. 环境工程学报, 2023, 17(7): 2433-2442. doi: 10.12030/j.cjee.202212136 |
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| 作者姓名： | 郭晓楠 于淼成 孟颖 袁庆科 谢馥宇 王义兵 张大磊 张鉴达 栾富波 |
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| 作者单位： | 1.河北师范大学地理科学学院，河北省环境变化遥感识别技术创新中心，河北省环境演变与生态建设实验室，石家庄 050024; 2.中国科学院生态环境研究中心，中国科学院饮用水科学与技术重点实验室，北京 100085; 3.青岛理工大学环境与市政工程学院，青岛 266033; 4.中国科学院大学，北京 100049; 5.内蒙古自治区巴彦淖尔市杭锦后旗水利局，巴彦淖尔 015400 |
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| 基金项目： | 国家自然科学基金资助项目 (41977280，U1904205) ；中国-斯里兰卡水技术研究与示范联合中心，中国科学院中国-斯里兰卡联合科教中心；“一带一路”国际科学组织联盟资助项目(ANSO-CR-KP-2020-05) |
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| 摘 要： | 对黄河全流域表层沉积物样品中重金属元素 (As、Cd、Cr、Cu、Ni、Pb、Zn、V、Co) 的赋存形态进行分析，发现Cd的可利用态占比较高，其余重金属以残渣态为主。基于可利用态重金属含量计算重金属风险评价标准、次生相和原生相分布比值，从而对表层沉积物中重金属的生态风险进行评估。结果表明，整个流域中Cd的生态风险最高。此外，Cd和Pb等重金属在M6点位迁移性较高，存在一定的生态风险。对可利用态重金属进行人体健康风险评价，发现M6点位儿童的致癌 (8.76×10−6) 和非致癌风险总值 (0.32) 最高。成人与儿童非致癌健康风险总值中As的贡献率最大 (61.28%和62.71%) ，致癌健康风险总值中As的贡献率也最大 (75.91%和75.98%) ，但总体均未超过美国环境总署推荐的人体最大可接受范围。本研究可为识别黄河干流表层沉积物中重金属风险及制定相应污染防控策略提供参考。
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| 关 键 词： | 黄河干流 表层沉积物 重金属 赋存形态 风险评价 |
| 收稿时间： | 2022-12-30 |
Morphological analysis and risk assessment of heavy metals in surface sediments of the Yellow River mainstream |
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| GUO Xiaonan, YU Miaocheng, MENG Ying, YUAN Qingke, XIE Fuyu, WANG Yibing, ZHANG Dalei, ZHANG Jianda, LUAN Fubo. Morphological analysis and risk assessment of heavy metals in surface sediments of the Yellow River mainstream[J]. Chinese Journal of Environmental Engineering, 2023, 17(7): 2433-2442. doi: 10.12030/j.cjee.202212136 |
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| Authors: | GUO Xiaonan YU Miaocheng MENG Ying YUAN Qingke XIE Fuyu WANG Yibing ZHANG Dalei ZHANG Jianda LUAN Fubo |
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| Affiliation: | 1.School of Geographical Sciences, Hebei Normal University; Hebei Key Laboratory of Environmental Change and Ecological Construction; Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, Shijiazhuang 050024, China; 2.Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; 3.School of Environment and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China; 4.University of Chinese Academy of Sciences, Beijing 100049, China; 5.Water Resources Bureau, Inner Mongolia Hangjinhouqi, Bayannaoer 015400, China |
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| Abstract: | In the present work, the forms of heavy metals (As, Cd, Cr, Cu, Ni, Pb, Zn, V, Co) that appeared in the surface sediment of the Yellow River were analyzed. The results demonstrated that the available forms of Cd accounted for a relatively high proportion, whereas other heavy metals mainly appeared in the residual form. In addition, we evaluated the potential ecological risks of heavy metals in surface sediments by calculating of the Risk Assessment Code for heavy metals and the distribution ratio of the secondary phase and primary phase. Results showed that the ecological risk of Cd was the highest in the whole basin. Moreover, the metals such as Cd and Pb had higher migration at the M6 site, which posed certain ecological risks to the relevant river basin. On the other hand, the human health risk assessment of the available heavy metals demonstrated that the carcinogenic (8.76×10−6) and non-carcinogenic risk (0.32) of Children at M6 was the highest. The contribution rate of As in the total non-carcinogenic health risk of adults and children was the highest (61.28% and 62.71%), and the contribution rate of As in the total carcinogenic health risk was also the highest (75.91% and 75.98%). However, those values did not exceed the maximum acceptable range of humans recommended by the U.S. Environmental Protection Agency. The results of this study can provide a reference for identifying the risk of heavy metals in the surface sediment of the Yellow River and formulating corresponding pollution remediation strategies. |
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| Keywords: | Yellow River mainstream surface sediment heavy metals existing form risk assessment |
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