HYDROCHEMICAL ANALYSIS OF SURFACE WATER PARAMETERS DYNAMICS IN THE RIKA AND TEREBLIA RIVER (UKRAINE)
This study assesses the hydrochemical dynamics of the Rika and Tereblia Rivers in Ukraine to evaluate water quality trends. Key water quality parameters, including biological oxygen demand, dissolved oxygen, total suspended solids, ammonium, nitrate, nitrite, phosphate, and sulphate, were analysed over a 10-year monitoring period. Statistical tools, such as Pearson correlation and regression analysis, were applied to determine relationships among these parameters and identify pollution sources.