Hydrogeochemistry and arsenic contamination of groundwater in the Rayen area, southeastern Iran
作者： Kaveh Pazand , Ali Reza Javanshir
DOI: 10.1007/S12665-013-2314-2
关键词:
摘要: High As contents in groundwater were found Rayen area and chosen for a detailed hydrogeochemical study. A total of 121 samples collected from existing tube wells the study areas January 2012 analyzed. Hydrogeochemical data suggested that is mostly Na–Cl type; also nearly 25.62 % have arsenic concentrations above WHO permissible value (10 μg/l) drinking waters with maximum concentration aqueous up to 25,000 μg/l. The reducing conditions prevailing high correlated bicarbonate pH. Results show released into by two major phenomena: (1) through reduction arsenic-bearing iron oxides/oxyhydroxides Fe may be precipitated as sulfide when anoxic prevail aquifer sediments (2) transferring water system during water–acidic volcanic rock interactions.
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