干旱区生态环境知识资源中心(Arid): Health-Risk Assessment of Arsenic and Groundwater Quality Classification Using Random Forest in the Yanchi Region of Northwest China

Arid

DOI	10.1007/s12403-019-00335-7
	Health-Risk Assessment of Arsenic and Groundwater Quality Classification Using Random Forest in the Yanchi Region of Northwest China
	Wu, Chu; Fang, Chen; Wu, Xiong; Zhu, Ge
通讯作者	Wu, X
来源期刊	EXPOSURE AND HEALTH
ISSN	2451-9766
EISSN	2451-9685
出版年	2020
卷号	12 期号:4 页码:761-774
英文摘要	High-arsenic (As) groundwater was first discovered in the Yanchi region, Northwest China, which is an arid or semiarid area, and the groundwater quality seriously affects the health of local residents. A comprehensive understanding of the spatiotemporal distribution characteristics, water quality, and health risk of high-As groundwater is indispensable for the sustainable utilization of groundwater sources and resident health. Seventy-nine groundwater samples were collected from different aquifers and seasons. The hazard quotient (HQ) and carcinogenic risk (CR) of As for adults and children were assessed. Moreover, the effects of groundwater sampling site and seasonal change on As concentration were investigated. Then, the random forest method was used to evaluate the importance of the indicators and the influence of these important indicators on groundwater classification. Thirty-three percent of the groundwater samples had HQ values > 1, and the CR values of all groundwater > 1.00 x 10(-6) for children, representing a serious health risk. Twenty-one percent of the groundwater samples had health risk for adult. High-As groundwater is present at depths less than 60 m, and groundwater As concentrations are slightly affected by seasonal changes. The random forest shows that the most important indicators that affect groundwater quality are Na, TDS, TH, and F, and the least important is As. Furthermore, the optimal set of indicators contained all four of the most important indicators obtained by the random forest model, which achieved a classification accuracy of 88.21% for groundwater quality.
英文关键词	High arsenic Health risk Random forest Groundwater quality
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000589075100016
WOS关键词	DRINKING-WATER ; SHALLOW GROUNDWATER ; WEST-BENGAL ; CONTAMINATION ; MACHINE ; SYSTEM ; BASIN ; PLAIN ; HYDROGEOCHEMISTRY ; IDENTIFICATION
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327486
作者单位	[Wu, Chu; Wu, Xiong; Zhu, Ge] China Univ Geosci, Sch Water Resources & Environm, Beijing 100083, Peoples R China; [Fang, Chen] Florida Int Univ, Ctr Adv Technol & Educ CATE, Miami, FL 33174 USA
推荐引用方式 GB/T 7714	Wu, Chu,Fang, Chen,Wu, Xiong,et al. Health-Risk Assessment of Arsenic and Groundwater Quality Classification Using Random Forest in the Yanchi Region of Northwest China[J],2020,12(4):761-774.
APA	Wu, Chu,Fang, Chen,Wu, Xiong,&Zhu, Ge.(2020).Health-Risk Assessment of Arsenic and Groundwater Quality Classification Using Random Forest in the Yanchi Region of Northwest China.EXPOSURE AND HEALTH,12(4),761-774.
MLA	Wu, Chu,et al."Health-Risk Assessment of Arsenic and Groundwater Quality Classification Using Random Forest in the Yanchi Region of Northwest China".EXPOSURE AND HEALTH 12.4(2020):761-774.