TOWARDS A LABORATORY STRATEGY FOR THE STUDY OF HETEROGENEOUS CATALYSIS IN STRATOSPHERIC OZONE DEPLETION

Recent observations suggest that stratospheric ozone depletion over th e poles in wintertime may be linked to heterogeneous processes occurri ng upon low temperature particle surfaces, in addition to homogeneous gas-phase reactions. In situ measurements are difficult, necessitating the development of laboratory methods for I the accurate determinatio n of heterogeneous reaction parameters for a wide variety of atmospher ic constituent gases with stratospheric particle surfaces. In this rev iew, some techniques currently being applied to the simulation of repr esentative surfaces and techniques for probing chemistry thereon will be discussed.