Sulfur dioxide and other sulfur-containing gases have been studied to evaluate their interactions with solids likely to be found in urban aerosols and on ground-level surfaces in the urban environment. Results indicate that sulfur dioxide readily reacts with most of these materials by capacity-limited reactions, particularly at high relative humidities. Removal of hydrogen sulfide and dimethylsulfide over ground-level surfaces is a slow process and largely reversible. The implications of these results with regard to air pollution chemistry and sulfur control strategies are discussed. Publications, reports, and presentations that resulted from this work are listed.

"EPA-600/3-77-132." "This report was submitted in fulfillment of Grant No. R802687, by The Aerospace Corporation, under the sponsorship of the Environmental Protection Agency."--P. iii. Includes bibliographical references (p. 15-16).