干旱区生态环境知识资源中心(Arid): Hydrochemical characterization, spatial distribution, and geochemical controls on arsenic and boron in waters from arid Arica and Parinacota, northern Chile

Arid

DOI	10.1016/j.scitotenv.2021.150206
	Hydrochemical characterization, spatial distribution, and geochemical controls on arsenic and boron in waters from arid Arica and Parinacota, northern Chile
	Pincetti-Zuniga, G. P.; Richards, L. A.; Daniele, L.; Boyce, A. J.; Polya, D. A.
通讯作者	Pincetti-Zuniga, GP ; Richards, LA (corresponding author), Univ Manchester, Dept Earth & Environm Sci, Manchester M13 9PL, Lancs, England. ; Pincetti-Zuniga, GP ; Richards, LA (corresponding author), Univ Manchester, Williamson Res Ctr Mol Environm Sci, Manchester M13 9PL, Lancs, England.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	806
英文摘要	The livelihood of inhabitants from rural agricultural valleys in the arid Arica and Parinacota Region, northernmost Chile, strongly depends on water from high altitude rainfall and runoff to lower elevation areas. However, elevated arsenic, boron, and other potentially harmful elements compromise water quality, especially in rural areas. Samples (n = 90) of surface, underground, cold, geothermal springs, and treated and raw tap water were studied to assess water quality and to determine the main geochemical controls on water composition, origin, and geochemical evolution along dominant (towpaths. Water from major river basins across the region (Lluta, San Jose, Codpa-Chaca, Camarones and Altiplanicas) were collected for hydrogeochemical analysis of a suite of major and trace elements, delta D and delta O-18. Our new dataset was supplemented by hydrochemical data (n > 1500 data points) from secondary sources. Results show that 72% of the collected samples had As >10 mu g/L (WHO drinking water provisional guideline) and affected 44% of the studied waters used for drinking (n = 32). Based on Chilean irrigation guidelines, elevated salinity (EC > 0.75 mS/cm) affected 80% of sampled waters, which were also impacted by high B (89% > 0.75 mg/L), and As (31% > 50 mu g/L). Water composition was strongly controlled by geothermal water and freshwater mixing in high altitude areas. Magnitude and fate of As and B concentration was determined by the geothermal input type. Highest As (similar to 21 mg/L) was associated with circum-neutral Na-Cl waters in Camarones basin, while lower As (similar to 5 mg/L) with acid SO4 waters in Lluta basin. Additionally, evaporative concentration and sediment-water interactions were shown to control the level of As in surface and groundwaters downstream. This works provides a comprehensive analysis and a conceptual model of geochemical controls on regional water compositions, contributing to better understanding the geochemical processes underpinning the water quality challenges in northern Chile. (C) 2021 Published by Elsevier B.V.
英文关键词	Northern Chile Water quality Hydrochemical evolution Arsenic Boron Geothermal waters
类型	Article
语种	英语
开放获取类型	Green Accepted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000702844300014
WOS关键词	DRINKING-WATER ; LATIN-AMERICA ; CANCER-RISKS ; EXPOSURE ; GROUNDWATER ; CHEMISTRY ; REMOVAL ; ORIGIN ; ENRICHMENT ; QUALITY
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/2XILL650/364627
作者单位	[Pincetti-Zuniga, G. P.; Richards, L. A.; Polya, D. A.] Univ Manchester, Dept Earth & Environm Sci, Manchester M13 9PL, Lancs, England; [Pincetti-Zuniga, G. P.; Richards, L. A.; Polya, D. A.] Univ Manchester, Williamson Res Ctr Mol Environm Sci, Manchester M13 9PL, Lancs, England; [Daniele, L.] Univ Chile, Fac Ciencias Fis & Matemat, Dept Geol, Santiago, Chile; [Daniele, L.] Univ Chile, Fac Ciencias Fis & Matemat, Ctr Excelencia Geotermia Los Andes CEGA, Santiago, Chile; [Boyce, A. J.] Scottish Univ Environm Res Ctr, E Kilbride G75 0QE, Lanark, Scotland
推荐引用方式 GB/T 7714	Pincetti-Zuniga, G. P.,Richards, L. A.,Daniele, L.,et al. Hydrochemical characterization, spatial distribution, and geochemical controls on arsenic and boron in waters from arid Arica and Parinacota, northern Chile[J],2022,806.
APA	Pincetti-Zuniga, G. P.,Richards, L. A.,Daniele, L.,Boyce, A. J.,&Polya, D. A..(2022).Hydrochemical characterization, spatial distribution, and geochemical controls on arsenic and boron in waters from arid Arica and Parinacota, northern Chile.SCIENCE OF THE TOTAL ENVIRONMENT,806.
MLA	Pincetti-Zuniga, G. P.,et al."Hydrochemical characterization, spatial distribution, and geochemical controls on arsenic and boron in waters from arid Arica and Parinacota, northern Chile".SCIENCE OF THE TOTAL ENVIRONMENT 806(2022).