Phytoplankton of river Masrik | Page 4

American Journal of Environmental Protection 2015; 4(3-1): 44-50 47 heavy metals the following results were revealed – by Cu-I class, Ni and Pb-II class, Cr-III class (fig.5) 60 50 40 2013 30 2014 20 10 0 Fig. 3. The Level of Content of Anions in the Water of Masrik River in 2013 and 2014. Fig. 2. The Level of Content of Cations in the Water of Masrik River in 2013 and 2014. Assessment of concentrations and the pollution level by Na, Cl and SO4 the river water belongs to II class, by K, Ca and Mg – to I class (fig. 2, 3). According to the evaluation of biogenic components NH4 and NO2the river water belongs to II class, by NO3-to IV class, by PO4-in upper (R.Sotk) and in the middle part of the river Masrik-to II class, but in the lowest part, in the river mouth - to the III class (fig.4). For