Kinetic factors in the response of piezo-optical chemical monitoring devices

The dependence of the amplitude, phase lag and shape of the response of a n ovel piezo-optical monitoring system on the thickness and the geometry of c olour development in the reagent layer have been studied using model system s, and compared with the response of a typical real reagent system. The pri nciples for optimisation of phase-locking and illumination frequency are il lustrated, and the use of the system to study the diffusion and reaction ki netics for reactions of analytes in solid reagent matrices is discussed. (C ) 1998 Elsevier Science S.A. All rights reserved.