干旱区生态环境知识资源中心(Arid): Fluoride and nitrate contamination of groundwater in the Loess Plateau, China: Sources and related human health risks

Arid

DOI	10.1016/j.envpol.2021.117287
	Fluoride and nitrate contamination of groundwater in the Loess Plateau, China: Sources and related human health risks
	Su, He; Kang, Weidong; Li, Yanrong; Li, Zhi
通讯作者	Li, YR (corresponding author), Taiyuan Univ Technol, Dept Earth Sci & Engn, Taiyuan 030024, Peoples R China. ; Li, Z (corresponding author), Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
EISSN	1873-6424
出版年	2021
卷号	286
英文摘要	Fluoride (F-) and nitrate (NO3-) in groundwater have caused serious health problems worldwide. However, in the Chinese Loess Plateau where groundwater is the primary source of drinking water, previous studies have rarely reported the health risks from fluoride and nitrate in groundwater. Therefore, we collected 105 groundwater samples (78 from shallow aquifers and 27 from deep aquifers) from the western district of the Loess Plateau for physicochemical and isotopic analysis to investigate the sources of F- and NO3- in groundwater and associated health risks. Fluoride concentration in 73.1% of shallow groundwater and 22.2% of deep groundwater exceeds 1.5 mg/L, while NO3- content in 76.3% of shallow groundwater and 51.9% of deep groundwater surpasses 50 mg/L. High-F- groundwater is associated with HCO3-Na, SO4-Na center dot Mg and Cl-Na center dot Mg types water. Fluorine bearing minerals dissolution, cation exchange, calcite precipitation, evaporation, and anthropogenic activities contribute significantly F- in groundwater. Mixing with shallow groundwater is an important source of F- in deep groundwater. The NO3- content is highest in Cl type water, followed by SO4 type and HCO3 type water. NO3- mainly originates from soil organic nitrogen (SON), chemical fertilizers (CF), and manure and sewage (M&S). Nitrification is the dominant transformation process of nitrogen nutrients in groundwater. The hazard index (HI) values for shallow groundwater are 0.203-9.232 for adults, 0.253-11.522 for teenagers, 0.359-16.322 for children, and 0.507-23.043 for infants, while those for deep groundwater are 0.713-5.813 for adults, 0.890-7.254 for teenagers, 1.261-10.277 for children, and 1.780-14.508 for infants. Approximately 96.2% of shallow groundwater poses non-carcinogenic risks to infants and children, followed by 92.3% to teenagers, and 89.7% to adults. All deep groundwater poses non-carcinogenic risks to infants and children, followed by 92.6% to teenagers, and 74.1% to adults. This study is helpful to develop strategies for the integrated management of high fluoride or nitrate groundwater in arid areas.
英文关键词	Fluoride Nitrate Source Health risk assessment Loess Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000687472600001
WOS关键词	DRINKING-WATER ; ENDEMIC FLUOROSIS ; YUNCHENG BASIN ; TRACE-ELEMENTS ; RIVER-BASIN ; ARID REGION ; LAND-USE ; AQUIFER ; AREA ; MECHANISMS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363134
作者单位	[Su, He; Li, Yanrong] Taiyuan Univ Technol, Dept Earth Sci & Engn, Taiyuan 030024, Peoples R China; [Kang, Weidong] Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China; [Li, Zhi] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Su, He,Kang, Weidong,Li, Yanrong,et al. Fluoride and nitrate contamination of groundwater in the Loess Plateau, China: Sources and related human health risks[J]. 西北农林科技大学,2021,286.
APA	Su, He,Kang, Weidong,Li, Yanrong,&Li, Zhi.(2021).Fluoride and nitrate contamination of groundwater in the Loess Plateau, China: Sources and related human health risks.ENVIRONMENTAL POLLUTION,286.
MLA	Su, He,et al."Fluoride and nitrate contamination of groundwater in the Loess Plateau, China: Sources and related human health risks".ENVIRONMENTAL POLLUTION 286(2021).