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沙颍河流域典型癌病高发区水体硝态氮污染及健康风险
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  • 英文篇名:Water nitrate nitrogen pollution and health risk in a typical high cancer incidence area of Shaying River basin
  • 作者:陈云增 ; 李天奇 ; 马建华 ; 阮心玲 ; 王琳 ; 邹桂英
  • 英文作者:CHEN Yunzeng;LI Tianqi;MA Jianhua;RUAN Xinling;WANG Lin;ZOU Guiying;College of Evironment and Planning, Henan University;Institute of Resources and Environment, Henan University;
  • 关键词:癌病高发区 ; 硝态氮 ; 亚硝态氮 ; 健康风险
  • 英文关键词:high cancer incidence area;;nitrate;;nitrite;;health risk
  • 中文刊名:环境科学学报
  • 英文刊名:Acta Scientiae Circumstantiae
  • 机构:河南大学环境与规划学院;河南大学资源与环境研究所;
  • 出版日期:2018-12-28 08:18
  • 出版单位:环境科学学报
  • 年:2019
  • 期:05
  • 基金:国家自然科学青年基金(No.41301336);; 教育部和河南省共建河南大学项目(No.SBGJ0907010)
  • 语种:中文;
  • 页:330-339
  • 页数:10
  • CN:11-1843/X
  • ISSN:0253-2468
  • 分类号:X52;R73-31
摘要
分别在雨季和旱季对癌病高发区地表水和地下水进行采样分析,探讨该区域地表水和地下水NO~-_3-N和NO~-_2-N污染状况、季节变化和空间分布特点,以及相应的健康风险.结果表明,雨季地表水和地下水NO~-_3-N含量明显高于旱季.受污染沙颍河水的影响,沿岸癌病高发村庄饮水井雨季NO~-_3-N污染严重,平均含量达到38.32 mg·L~(-1),超标近3倍,而旱季则存在NO~-_2-N污染,平均含量达到0.69 mg·L~(-1).研究区癌病高发村庄居民存在饮水NO~-_3-N暴露的健康风险,其年平均健康总风险达到1.02×10~(-8) a~(-1),为其他村庄居民的6倍以上,饮水NO~-_3-N污染是癌病高发村庄居民的健康危害因素.
        NO~-_3-N and NO~-_2-N concentrations are determined in samples from surface water and groundwater of rainy seaon and dry season differently in a high cancer incidence area. Seasonal variation and spatial distribution as well as the corresponding health risk caused by NO~-_3-N and NO~-_2-N are analyzed and evaluated. The results shown that with significant seasonal variation, NO~-_3-N concentrations in surface water and groundwater in rainy season are much higher than that in dry sean. As a result of the influence by severely polluted Shaying River, the drinking water of the cancer village are heavily polluted by NO~-_3-N in rainy season and NO~-_2-N in dry season. The average NO~-_3-N concentration in drinking water of the cancer village reached 38.32 mg·L~(-1) in rainy season, nearly 4 times of the standard, and the average NO~-_2-N concentration in drinking water of the cancer village reached 0.69 mg·L~(-1) in dry season. The results also indicated that health risk caused by noncarcinogens NO~-_3-N has occurred. The health risk for residents in cancer village reached 1.02×10~(-8) a~(-1), more than 6 times of the risk for residents in other village, which means that the NO~-_3-N pollution in drinking water was a main health hazard factor to the residents in cancer village.
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