长春新区浅层地下水硝酸盐污染健康风险评价

IF 0.8 Q4 Environmental Science
H. Tian, Xiujuan Liang, Y. Gong, Zhuang Kang, Hongtao Jin
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引用次数: 9

摘要

地下水中高浓度的硝酸盐对人类健康构成威胁。为了量化长春新区地下水硝酸盐污染并评估其对人类健康的风险,采集并分析了98个地下水样本。地下水化学成分的空间分布随着浓度从TDS下降而变化 > HCO3− > Ca2+ > NO3− > SO4 2- > Na+ > Cl− > Mg2+ > K+ > NO2− > NH4+。值得注意的是,NO3−浓度范围为0.02–492.72 mg/L,平均98.62 mg/L。超过50%的样品超过中国地下水质量标准Ⅲ类氮阈值(20 mg/L)。主成分分析确定,NO3污染主要是由于农业中过度使用化肥造成的。人类健康风险评估模型用于通过饮用水和皮肤接触途径评估地下水NO3-的潜在健康风险。在研究区域,大约90%的成年人、66%的儿童和45%的婴儿有可接受的健康风险。龙家镇和西营城镇的NO3暴露风险最高,而城市地区的NO3接触风险往往较低。居民,特别是未成年人和婴儿的健康风险令人关切。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Health risk assessment of nitrate pollution in shallow groundwater: a case study in Changchun New District, China
High concentrations of nitrate in groundwater pose a threat to human health. To quantify groundwater nitrate pollution in China's Changchun New District and evaluate its human health risks, 98 groundwater samples were collected and analyzed. The spatial distribution of groundwater chemical components was variable with concentrations descending from TDS > HCO3 − > Ca2+ > NO3 − > SO4 2- > Na+ > Cl− > Mg2+ > K+ > NO2 − > NH4 +. Notably, NO3 − concentrations ranged from 0.02–492.72 mg/L and averaged 98.62 mg/L. Over 50% of samples exceeded the Quality Standard for Groundwater of China Class III N threshold (20 mg/L). Principal component analysis determined that NO3 contamination was primarily due to the excessive use of fertilizers in agriculture. A human health risk assessment model was used to assess the potential health risks of groundwater NO3 − via drinking water and skin contact pathways. Approximately 90% of adults, 66% of children, and 45% of infants had acceptable health risks in the study area. NO3 − exposure risk in the towns of Longjia and Xiyingcheng was the highest, while urban areas tended to have lower exposures. The health risks of residents, especially minors and infants, were concerned.
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来源期刊
CiteScore
0.40
自引率
0.00%
发文量
0
审稿时长
>36 weeks
期刊介绍: La Houille Blanche, revue internationale de l ''eau/International Water Journal, is the only almost all French-written journal of Water science. It promotes the dissemination of research and innovative practices in the field of water, as a key resource for everyday use for human needs, agriculture, energy and transport, and hydraulic public works. This includes environmental and risk assessment and management issues related to hydrology, meteorology, flood, low flows and drought, as well as issues in the field of fluid mechanics, hydraulics machinery, multiphase flows, microfluidics... La Houille Blanche, International Water Journal, is cited by Science Citation Index Expanded of Institute for Scientific Information (I.S.I) in USA, and by CNRS in France; since 1902, the journal publishes high-standard relevant peer-reviewed research papers. La Houille Blanche also provides more general information and recent news about the water world, and the SHF association and its members life: scientific events, book review, R & D advancements, … Six issues per year. Thematical journal for original articles and reviews mostly in French.
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