NDLI: Environmental geochemistry and sources of natural arsenic in the Kharaqan hot springs, Qazvin, Iran

Content Provider	Springer Nature Link
Author	Yazdi, Mohammad Taheri, Masoumeh Navi, Pedram
Copyright Year	2014
Abstract	The Kharaqan hot springs are located in the historic city of Abe-Garm, famous for its hot springs, in Qazvin province, in northwestern Iran. Thermal waters with temperatures ranging from 28.7 to 52 °C vary in chemical composition and TDS contents. Those waters generally are enriched in Na–Cl–HCO$_{3}$ and suggest deep water circulation. Chemistry of all of the water samples are graphed in the Cl–SO$_{4}$–HCO$_{3}$ ternary diagram. There is a trend of mixing along a line of constituent proportions between recently recharged water and older water. The trend toward the chloride corner is mainly the result of contact in the subsurface with evaporite-bearing formations and/or mixing with brines. Relatively high concentrations of Na, Ca, K, Cl, and SO$_{4}$ resulted from rock/water interactions. These hot spring waters show high concentrations of arsenic (0.14–0.95 mg L$^{−1}$). The diffusion of As-bearing spring waters into shallow aquifers could contaminate the groundwater which is used for drinking purposes. Also discharges of this As-enriched water into streams and rivers could affect irrigated crops in downstream fields. In both cases, the health of local residents could be at risk.
Starting Page	5395
Ending Page	5404
Page Count	10
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	9
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-10-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental impact Hot spring NW of Iran Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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