title: Use of complex displacement reactions in photometric analysis.
abstract: 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.
authors.affiliation: Institute for General and Analytical Chemistry, Technical University, Budapest, Hungary.
authors.forename: J
authors.initials: J
authors.lastname: Inczédy