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Water quality index (WQI), pollution index (PI), and metal index (MI) were applied in the last reach of Diyala River, Baghdad, Iraq with regard to ten heavy metals (Cd, Cr, Cu, Ni, Pb, Mn, Fe, Zn, Ag, and Cn). These indices were applied to historical data along with the data obtained from the present study in order to acquire a historical heavy metal assessment of the river reach. The results of WQI...
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