Sufficient conditions for unique solutions within a certain class of curveresolution models

Curve resolution is a class of techniques concerned with estimating profile s underlying a set of measurements of time-evolving chemical systems. In ge neral, the estimated profiles are not unique. Both intensity and rotational ambiguities exist in the solutions of these problems. Constraints can be i mposed on the solution to decrease the ambiguity. Some chemical systems sho w closure. It is proven that imposing a closure constraint is sufficient to solve the intensity ambiguity but not the rotational ambiguity. Some curve resolution techniques are concerned with estimating reaction rate or equil ibrium constants from measurements of evolving systems. Then a kinetic mode l is imposed on the measured data. It is proven that imposing a certain cla ss of kinetic models is sufficient to solve both the rotational and the int ensity ambiguity. Copyright (C) 2001 John Wiley gr Sons, Ltd.