| 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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| 引用本文： | 陈云增,李天奇,马建华,阮心玲,王琳,邹桂英. 沙颍河流域典型癌病高发区水体硝态氮污染及健康风险[J]. 环境科学学报, 2019, 39(5): 1698-1707 |
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| 作者姓名： | 陈云增 李天奇 马建华 阮心玲 王琳 邹桂英 |
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| 作者单位： | 1. 河南大学环境与规划学院, 开封 475004;2. 河南大学资源与环境研究所, 开封 475004,河南大学环境与规划学院, 开封 475004,1. 河南大学环境与规划学院, 开封 475004;2. 河南大学资源与环境研究所, 开封 475004,1. 河南大学环境与规划学院, 开封 475004;2. 河南大学资源与环境研究所, 开封 475004,河南大学环境与规划学院, 开封 475004,河南大学环境与规划学院, 开封 475004 |
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| 基金项目： | 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） |
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| 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.
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| 关 键 词： | 癌病高发区 硝态氮 亚硝态氮 健康风险 |
| 收稿时间： | 2018-10-11 |
| 修稿时间： | 2018-12-13 |
Water nitrate nitrogen pollution and health risk in a typical high cancer incidence area of Shaying River basin |
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| CHEN Yunzeng,LI Tianqi,MA Jianhu,RUAN Xinling,WANG Lin and ZOU Guiying. Water nitrate nitrogen pollution and health risk in a typical high cancer incidence area of Shaying River basin[J]. Acta Scientiae Circumstantiae, 2019, 39(5): 1698-1707 |
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| Authors: | CHEN Yunzeng LI Tianqi MA Jianhu RUAN Xinling WANG Lin ZOU Guiying |
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| Affiliation: | 1. College of Evironment and Planning, Henan University, Kaifeng 475004;2. Institute of Resources and Environment, Henan University, Kaifeng 475004,College of Evironment and Planning, Henan University, Kaifeng 475004,1. College of Evironment and Planning, Henan University, Kaifeng 475004;2. Institute of Resources and Environment, Henan University, Kaifeng 475004,1. College of Evironment and Planning, Henan University, Kaifeng 475004;2. Institute of Resources and Environment, Henan University, Kaifeng 475004,College of Evironment and Planning, Henan University, Kaifeng 475004 and College of Evironment and Planning, Henan University, Kaifeng 475004 |
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| Abstract: | NO3--N and NO2--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 NO3--N and NO2--N are analyzed and evaluated. The results shown that with significant seasonal variation, NO3--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 NO3--N in rainy season and NO2--N in dry season. The average NO3--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 NO2--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 NO3--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 NO3--N pollution in drinking water was a main health hazard factor to the residents in cancer village. |
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| Keywords: | high cancer incidence area nitrate nitrite health risk |
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