Determination of copper complexation with natural organic ligands in seawater by equilibration with MnO2 I. Theory

摘要: The theory is discussed which describes the distribution of copper ions between a weak ion exchanger, as exemplified by MnO2, and natural organic complexing material in seawater. Application this experimental procedures are outlined part II series. It apparent from that titration with Cu2+ one or more ligands can be graphically represented straight lines; slope y-axis intercept provide information on conditional stability constants ligand concentrations. Model calculations show measurement metal complexation at concentrations higher than normally present seawater may produce erroneous results because possible changes to ratio complexes. therefore advisable measure original, unaltered, water sample.