Abstract
The present study investigates the chemical composition of wet atmospheric precipitation over Mosul city ,bulk precipitation and throughfall under five different stands (Pinus brutia, Cupressus sempervirens, Platanus occidentalis, Populus nigra and Eucalyptus camaldulensis) were collected through rainy events during 2011-2012. The concentrations of the chemical constituents of water soluble ions included some cations such as (Ca+2 , Mg+2 ,Na+1 , and K+1) and anions (HCO3-, SO4-2,and Cl- ) and five of heavy metals (Zn ,Cu , Fe , Mn , and Pb)Electrical conductivity and pH of rain water and throughfall were also Measured . Results of the present study showed that mean value of the precipitation pH indicates that rainfall was slightly acidic whereas throughfall was almost neutral , also the concentration of most cations , anions and heavy metals increased in throughfall compared to open area precipitation
