干旱区生态环境知识资源中心(Arid): Geogenic arsenic contamination of wet-meadows associated with a geothermal system in an arid region and its relevance for drinking water

Arid

DOI	10.1016/j.scitotenv.2020.137571
	Geogenic arsenic contamination of wet-meadows associated with a geothermal system in an arid region and its relevance for drinking water
	Villalba, Esteban 1; Tanjal, Carolina 1; Borzi, Guido 1; Paez, Gerardo 2; Carol, Eleonora 1
通讯作者	Carol, Eleonora
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	720
英文摘要	Arsenic (As) is an important component in thermal springs, which can reach water sources constituting an important hazard for both the environment and people. For this reason, the aim of this paper is to analyze the geologic and geochemical processes that determine the presence and concentration of As in wet-meadows associated to a geothermal field in Patagonia (Argentina) which is used as water supply. To achieve this, during field surveys temperature, pH and electrical conductivity were measured and water and rock samples were taken. Major ions and stable isotopes were determined in water samples while As content was analyzed in both water and rock samples. Due to geological control and chemical analyses, three areas were recognized with respect to major streams in the geothermal field: wet-meadows at headwaters, thermal springs at mid basin and wet-meadows at down basin. Even though, water in wet-meadows have the same origin the obtained results evidence how thermal springs at mid-basin influence the chemistry of these wetlands, particularly those at down basin. In the latter, As raises over two orders of magnitude than the ones at headwaters which surpasses the reference limit, proving that thermal springs are also responsible for the increase of the As content in water changing its quality as a source of potable water. The concentration of this metalloid could be higher but it is retained in travertine and sinter deposits formed near the geothermal discharge area. Understanding processes controlling water quality and the chemistry of As in this type of wetlands is of vital importance, mainly in an arid region where water supply sources are scarce. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Wetlands As contamination Hydrothermalism Hydrochemistry Patagonia
类型	Article
语种	英语
国家	Argentina ; Belize
收录类别	SCI-E
WOS记录号	WOS:000525736600066
WOS关键词	TRACE-ELEMENTS ; PROVINCE ; FIELD ; GROUNDWATER ; EXPOSURE ; SPECIATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318786
作者单位	1.UNLP, CONICET, CIG, Diagonal 113 275, La Plata, Argentina; 2.UNLP, CONICET, INREMI, Inst Recursos Minerales, Belmopan, Belize
推荐引用方式 GB/T 7714	Villalba, Esteban,Tanjal, Carolina,Borzi, Guido,et al. Geogenic arsenic contamination of wet-meadows associated with a geothermal system in an arid region and its relevance for drinking water[J],2020,720.
APA	Villalba, Esteban,Tanjal, Carolina,Borzi, Guido,Paez, Gerardo,&Carol, Eleonora.(2020).Geogenic arsenic contamination of wet-meadows associated with a geothermal system in an arid region and its relevance for drinking water.SCIENCE OF THE TOTAL ENVIRONMENT,720.
MLA	Villalba, Esteban,et al."Geogenic arsenic contamination of wet-meadows associated with a geothermal system in an arid region and its relevance for drinking water".SCIENCE OF THE TOTAL ENVIRONMENT 720(2020).