In kinetic or equilibrium investigations it is common to measure two-way multiwavelength data, e.g. absorption spectra as a function of time or reagent addition. Often it is advantageous to acquire experimental data at various initial conditions or even on different instruments. A collection of these measurements can be arranged in three-dimensional arrays, which can be analysed as a whole under the assumption of a superimposed function, e.g. a kinetic model, and/or common properties of the subsets, such as molar absorptivity. As we show on selected formation equilibria (Zn²⁺/phen) and kinetic studies (Cu²⁺/cyclam) from our own research, an appropriate combination of multivariate data can lead to an improved analysis of the investigated systems.
Analytica Chimica Acta Vol. 490, Issue 1-2, p. 99-108