Kinetic study of HMSA formation and decomposition: Tropospheric relevance

…, G Wenger, P Lagrange

Index: Lagrange; Wenger Journal de Chimie Physique et de Physico-Chimie Biologique, 1999 , vol. 96, # 4 p. 610 - 633

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Citation Number: 12

Abstract

Abstract The rate law of HMSA (hydroxymethanesulphonic acid) formation is: rate= $\ frac {3.5+ 1.05\ times10^ 6 [\ rm H^+]}{1.2. 19\ times10^ 6 [\ rm H^+]} $[CH 2 O] $ _ {\ rm T} $[SO 2, aq] $ _ {\ rm T} $(NaClO 4 1 M, 25$^{\ circ} $ C). The formation can occur by two parallel nucleophilic additions of HSO 3-or SO 3 2-to the formadehyde. In presence of H 2 O 2, a slow oxidation process is observed: rate= $1.8\ times10^{-10} $[HMSA][H+]-1 (1 M NaClO ...