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Quantitative estimation of the degree of metal ion and proton binding with various acceptors

An approach to quantitatively estimating the degree of binding transition metal ions and/or protons to acceptors of an unknown nature is described and experimentally verified. The suggested approach can be used to characterize up to two types of acceptors by effective parameters (binding constant K* i and concentration of binding centers c* L i ) at experimental errors characteristic of modern ionometry. The developed approach and the procedures based on it are topical for increasing the information content of analyses and interpreting the states of transition metal ions in natural aqueous systems. The conclusion is drawn that this approach is also expedient for use if it is necessary to quantitatively characterize piecemeal binding of H + and M z + ions by functional fragments of "particles" of an arbitrary nature in arbitrary one- and multicomponent solvents when, for some reason, information on the nature of L i and the c* L i value is lacking.