Use of complex displacement reactions in photometric analysis.
The theoretical requirements for the quantitative photometric determination of trace amounts of metal ions by use of complex displacement reactions are discussed and a calculation method using conditional equilibrium constants and side-reaction functions defined and used by Ringbom is recommended. As an example, the requirements in the determination of erbium(III) by using copper(II)-EDTA complex and PAN indicator in ammonium lactate buffer solutions are calculated.
Inczédy
J
J
Institute for General and Analytical Chemistry, Technical University, Budapest, Hungary.