Some Heavy Metals Status and Water quality parameters of Darbandikhan Dam, Sirwan and Tanjaro

Three stations were used for this study, including the Darbandikhan Dam at coordinates 35°7'16"N, 45°43'18"E, the Sirwan River at coordinates 35°7'17"N, 45°50'54"E, and the Tanjaro River at coordinates 35°14'22"N, 45°51'58"E, to examine the concentration of heavy metals there over a six-month period. The studied heavy metals include Hg, Cd, Pb, Cu, Co and Cr analyzed by ICP-OES (Spectro acros). Temperature values range between 13-30.9 Cº, Dissolved Oxygen value ranged between 4.82- 9.5 mg L-1, pH values varied between 6.11-7.97, Total Hardness level exceed (100mg L-1), The sulphate value was between 51 and 145 mg L-1, Nitrate values ranged from 3.01 to 14.7 mg L-1, The range of electrical conductivity of this study was 191 to 595 µs cm-1, The concentration of calcium ions (Ca2+) was between 48-104 mg L-1, Magnesium concentration was between 12.6-40 mg L-1. Hg, Cr and Cd were below detectable level, the Pb was higher in August 2021, Cu in September 2021 in Darbandikhan Dam. In Tanjaro River Site each of Cd and Hg were below detectable level, the Cr, Co, Cu and Pb were higher in October 2021. In Sirwan River Site each of Cd Hg were below detectable level, Cr, Co, Cu and Pb were higher in August 2021.