Atmospheric Pollution: The Role of Heterogeneous Chemical Reactions

Abstract

The chemical kinetics of heterogeneous chemical reactions of importance in the atmosphere are discussed using six examples: 1) water vapor and 2) HCl interacting with ice, 3) ClONO₂ + HCl on ice, 4) HONO + HCl on H₂SO₄ and ice, 5) HNO₃ reacting on dry CaCO₃ powder and 6) reactions of HNO₃, N₂O₅; ClONO₂, ClNO₂ on salts such as NaCl and KBr. Quantitative results of uptake coefficients are presented and the importance of ionic displacement reactions at the interface is stressed.