典型含水层挥发性有机物分布特征及健康风险

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摘要为探究含水层中挥发性有机物分布特征及评价其对人体健康风险,以我国西北地区某有机污染场地为研究对象,利用分层采样技术采集地下水样品65个,选择特征分析指标苯胺和COD,采用多元统计学、吸附热力学、三维插值、健康风险评估等方法揭示含水层中苯胺和COD分布特征及环境健康风险,结果表明:研究区地下水已受到污染,单因子污染指数苯胺最大为305.42,COD最大为90.63;含水层苯胺和COD呈面状污染,污染范围较大;苯胺和COD垂向分布存在分层现象,深层(埋深7~12.7m)含水层中苯胺和COD浓度更高、污染面积更大;吸附态苯胺总质量是溶解态苯胺总质量的1.18倍;地下水中苯胺对人体健康产生致癌风险和非致癌危害,饮水途径健康风险高于皮肤接触.

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	王颖
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	范帅
	马学敏

关键词 ：挥发性有机物, 分布特征, 吸附作用, 三维插值, 健康风险

Abstract：An organic contaminated site in northwest China was selected to research volatile organic compounds (VOCs) distribution characteristics and human health risk assessment in the typical aquifers. 65 groundwater samples were collected through layered sampling technique. The distribution characteristics and human health risk assessment of aniline and COD in the aquifers was analysed by multivariate statistics, adsorption thermodynamics, three-dimensional interpolation and health risk assessment methods. The results showed that the groundwater in the study area has been polluted. The largest single factor pollution index value of aniline and COD was 305.42 and 90.63 respectively. The contamination plume of aniline and COD in the aquifer was large. The vertical distribution form 7 to 12.7m of aniline and COD was larger and concentration was higher. The total mass of adsorbed aniline in the aquifer was 1.18times than that of dissolved aniline. Aniline in the groundwater would cause carcinogenic and non-carcinogenic hazards to human health. Aniline mainly causes harm to human health through drinking groundwater.

Key words： VOCs distribution characteristics absorption 3-D interpolation human health risk

收稿日期: 2022-06-27

PACS:

X523

基金资助:国家重点研发计划项目(2020YFC1807103)

通讯作者: 王月,高级工程师,yuewanggg@126.com E-mail: yuewanggg@126.com

作者简介: 王颖(1995-),女,河北保定人,硕士,中国环境科学研究院研究助理,主要从事污染场地风险评估研究.发表文章3篇.

引用本文:

王颖, 王明玉, 吴昌永, 王月, 范帅, 马学敏. 典型含水层挥发性有机物分布特征及健康风险[J]. 中国环境科学, 2023, 43(2): 821-830. WANG Ying, WANG Ming-yu, WU Chang-yong, WANG Yue, FAN Shuai, MA Xue-min. Research on distribution characteristics and health risk assessment of volatile organic compounds (VOCs) in the typical aquifers. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(2): 821-830.

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