Abstract: Iterative target transformation factor analysis was applied to resolve the kinetic-spectral data matrix monitored in the process of spectroscopic reaction of unknown kinetic model and the kinetic spectrum of each component is obtained. Anovel approach was proposed to estimate the initial vectors based on the spectral features such as the isoabsorptive point of the relative component in the system. With the proposed approach, the simulated data matrix for a two-step consecutive reaction in which every component had absorption were successfully resolved. The data matrix measured in the electrodegradation process of salicylic acid, in which the final product has no absorption, can also be resolved with a satisfying result.

Key words: Iterative target transformation factor analysis(ITTFA), Two-way kinetic-spectroscopic data, Isoabsorptive point, Unknown kinetic model, Electrodegradation of salicylic acid