INTRODUCTION AND SUMMARY Calspan Corporation@ in collaboration with the Particle Technology Laboratory of the University of Minnesota@ has been engaged in a laboratory study of the formation mechanisms and growth processes of photochemical aerosols. The primary objective of the investigation is to improve our understanding of photochemical aerosol behavior in urban environments by conducting studies in carefully controlled environments@ simulating those occurring in the real atmosphere. During the first year program@ emphasis was placed on preparing the Calspan 20@800 ft3 reaction chamber for photochemical aerosol studies and in examining aerosol behavior in SO2 and propylene-NOx systems. At the University of Minnesota@ studies in 600 ft3 and 90 ft3 chambers were conducted to help determine the effects of bag size on aerosol production and also to study the influence of varying relative humidities on aerosol behavior. Results of the first year program have been presented in an earlier report@ Kocmond et al. (1973).
API 4263-1975 history
1975API 4263-1975 STUDY OF AEROSOL FORMATION IN PHOTOCHEMICAL AIR POLLUTION