Abstract
AbstractEffect of competition of major cations, Ca2+, Mg2+, and trace metals, Cu2+, Ni2+ and Zn2+, on the stability of the Pb(II)‐fulvic acid (FA) complexes in model systems at constant pH and ionic strength was investigated by square‐wave anodic stripping voltammetry (SWASV). The results show that the trace metals compete with the target trace metal, Pb(II), for binding sites of the FA even when they are present in the same concentration as that of Pb(II), whereas the major cations compete with Pb(II) only when they are present in massive excess.
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