Document Type: Original Article
Assistant Professor, Department of Mining Engineering, Arak University of Technology, Arak, Iran
Department of Mining Engineering, Arak University of Technology, Arak, Iran
Markazi Regional Water Company
The present study investigated NO3- and Br- contamination in groundwater of Arak aquifer, Markazi province, Iran. Correlation and factor analyzes were used to detecti nterrelations and sources of NO3- and Br- ion concentration and other physicochemical variables. No correlation was observed between NO3- and otherscontents, but a positive correlation was identified between Br-and other majorvariables such as EC, TDS, Cl- and SO42-in the groundwater.The results showed that groundwater samples of two areas of Arak aquifer were severely contaminated by NO3- (up to 50 mg/L) and Br-(up to 0.5mg/L),which exceededthe WHO and EU provision alguideline values. Nitrate showed an anthropogenic source that originated from sewage water from domestic and industrial activities. Bromide originated from palaeo-salty water of Mighan Lake with a geogenic source.