文章基本信息

标题：NITROGEN SOURCE ANALYSIS AND HEALTH RISK ASSESSMENT IN GOAF WATER OF KOUQUANGOU MINING AREA,DATONG,CHINA
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作者：Leisheng Guan ; Herong Gui ; Honghai Zhao 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2020
卷号：29
期号：12
页码：10346-10355
语种：English
出版社：PSP Publishing
摘要：This paper takes the goaf water of meiyukou mine,tongjialiang mine,baidong mine and dazigou mine in the kouquangou mining area of datong city as the research object.The content and source of nitrogen in goaf water were analyzed by correlation analysis and principal component analysis.The water quality of goaf water was analyzed by entropy water quality index evaluation method and health risk evaluation method,which provided information for water resources utilization in goaf of coal mine in research area,in order to alleviate water supply tension in Datong City.The results show that the NH4+ in the goaf of coal mine is affected by the change of crustal source including rock salt and sulphate,and the content of NO3- and Cl- is affected by the mining activity of coal mine; The presence of Fe3+ promotes the conversion of NH4+ to NO3- and NO2-,while providing an oxidizing environment to further increase the NO3- content; 52.63%,42.44% and 5.26% of the water in goafbelongs to III,IV and V categories respectively; Through the health risk assessment,the nitrogen (NO3-,NO2- and NH4+) in goaf water has a small impact on human health through skin intake,and the goaf water can be used for bathing in daily life or landscape entertainment water accessible to the body.
关键词：Goaf water;Three nitrogen;EWQI;Health risk assessment.