Document Type : Original Research Paper
Authors
1 Departments of Geology, Urmia University, Urmia, Iran.
2 Department of Geology, Tarbiat Moalem univesity-Tehran, Tehran, Iran.
3 Faculty of Geology, College of Science, Tehran University, Tehran, Iran.
Abstract
The results of physicochemical parameters (pH, Eh, EC, TDS, TH, TA, T, and Salinity) and chemical analyses of the springs and drinking water samples of the study area indicate obvious variation compared to each other. Based on these results, the minimum pH and maximum of TDS, EC, salinity, total hardness(TH), total alkalinity(TA) parameters and cations and anions, major and trace elements (especially As and Sb) concentrations in spring water samples belong to spring Aq.D1-1(located downstream of Aq-Darreh Bala abandoned antimony mine) and spring Sp.5 (downstream of tailing dams of Aq-Darreh Au mineral processing unit) samples, and the drinking water samples of the Aq-Darreh Paeen village ( spring D.W.P). The Aq-Darreh Paeen drinking water, supplied from the spring near the village, outpoured from the mineralized travertine. Compare to the international standards, main cations and anions concentrations and physicochemical parameters values (exception total hardness) of the springs and drinking water samples are located in permissible ranges. While, Aq-D1-1, Sp.5 and W.D.P springs water samples are polluted regarding to total hardness value and As concentration. Based on the geological map of the study area and location of the all spring water samples (except spring Sp.5), it can be concluded that the chemical composition of the bed rocks around the springs had the main role in controlling the water quality, and the main cause of Sp.5 water spring contamination is polluted waters leaked from the tailing dams of Aq-Darreh Au mineral processing unit.
Keywords
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