ASSESSMENT OF SURFACE WATER QUALITY IN JIU VALLEY MINING AREA
Keywords:
Jiu Valley, mining units, water qualityAbstract
The main objective of the present study was to perform a general screening of surface water quality in Jiu Valley mining rea. Surface waters were collected from West Jiu river and some of its tributaries (Caprisoara creek; Baleia creek; Barbateni creek; Vacii Valley creek; Tusu creek; Bulzu creek) to analyze several general physico-chemical and some specific chemical quality parameters. The general physico-chemical parameters: pH, redox potential (ORP), salinity, total dissolved solids (TDS), electrical conductivity (EC) and dissolved ions were analyzed.
The analyzed water samples had a neutral pH, with a relatively low content of dissolved salts, except for Caprisoara creek. Based on their dissolved ions content, most of the analysed waters correspond to Ist quality class, which reflect a very good ecological status. Because of the high content of sulphate, calcium and magnesium, water sampled from Caprisoara creek corresponds to Vth class (based on SO42- content), IVth class (Ca2+ level) and IIIrd (Mg2+ concen-tration) class, indicating a bad / low / moderate ecological status. The water quality degradation of Caprisoara creek in the investigated area may be associated with several anthropic activities identified in the area, but to confirm this sources further investigations are needed.
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Please send the manuscript prepared with the MSWord Template, together with the Cover Letter to the editor-in-chief:
Dana Copolovici (e-mail: dana.copolovici@uav.ro)