Geochemical assessment of groundwater around Razgah area, Sarab district, Northwest of Iran
Keywords:
groundwater quality, Major ion, Razgah, Metal.Abstract
The chemical analysis of 9 water wells in Razgah area, Azarbaijan province NW of Iran has been
evaluated to determine the hydrogeochemical processes and ion, heavy and rare metal concentration
background in the region. The dominated hydrochemical types are Na+Cl in area. The metals often
concentrate in south and western part in study area. Due to geological conditions and water flow path in
the region, probably due to increased metals in the western and southern parts of the area is Razgah
intrusion. Based on the total hardness, the groundwater is very hard. According to EC and SAR the
most dominant classes are C4-S4. The major ion concentrations are above the acceptable level for
drinking water. The groundwater salinity hazard is very high and Na hazard is very high and in regard of
irrigation water the quality is low. So the drainage system is necessary to avoid the increase of toxic salt
concentrations.
