Effect of ionic strength on the complexation of Cu(II) with organic matter dissolved in freshwater

Effect of pH on the complexation parameters for organic matter dissolved in river water

“…Figure 3 shows the curves resulting by fitting to equation (1) the experimental conditional binding constants as a function of pH, for the different samples. At intermediate pH values, a linear relationship between log K C and pH was found with a slope of 0.43 that virtually coincides with the 0.39 obtained for a neighbouring river (Antelo et al, 1995). At higher pH values, the conditional constant tended to a constancy, consistent with eq.…”