Method for selection of optimum wavelengths for multicomponent spectrophotometric determinations

Abstract

A method for selecting optimum wavelengths (OWL) in multicomponent spectrophotometric determinations has been developed. The algorithm and criteria proposed allow selection of OWL, the value of which is equal to the component number. The method was applied to the Al³⁺–Ox, Fe³⁺–Ox and TiO²⁺–H₂O₂–Ox (where Ox is 8-hydroxyquinoline) chemical systems. About 5% relative prediction error was obtained for concentrations from 0.009 to 0.036 mmol dm^–3.