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The hydrolysis of ClONO 2 on sub‐micron liquid sulfuric acid aerosol
Author(s) -
Ball Stephen M.,
Fried Alan,
Henry Bruce E.,
Mozurkewich Michael
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/98gl02566
Subject(s) - sulfuric acid , aerosol , analytical chemistry (journal) , chemical composition , range (aeronautics) , hydrolysis , materials science , inorganic chemistry , chemistry , mineralogy , environmental chemistry , organic chemistry , composite material
The reactive uptake of ClONO 2 on liquid sulfuric acid has been measured for size‐selected, sub‐micron aerosol in the composition range 36–54% H 2 SO 4 by weight at ≈ 250 K. A comparison with results from studies employing bulk surfaces at similar temperatures and compositions shows no evidence for a dependence of the reaction probability, γ, on size. We use this observation to estimate an upper limit to the diffuso‐reactive length of 26 nm for the ClONO 2 + H 2 O reaction on 43 weight % aerosol at 248 K. But, the present values of γ are consistently lower than bulk values observed at lower temperatures and similar composition, suggesting that γ is temperature dependent.