Sensitivity analysis of a chemical mechanism for aqueous-phase atmospheric chemistry

Journal Article · Fri Jan 20 04:00:00 EST 1989 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JD094iD01p01105· OSTI ID:5383441

Pandis, S N; Seinfeld, J H ^[1]

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1. California Inst. of Tech., Pasadena (USA)

The sensitivity analysis of a comprehensive chemical mechanism for aqueous-phase atmospheric chemistry is performed. The main aqueous-phase reaction pathways for the system are the oxidation of S(IV) by H{sub 2}O{sub 2}, OH, O{sub 2} (catalyzed by Fe{sup 3+} and Mn{sup 2+}), O{sub 3} and HSO{sub 5}{sup {minus}}. The HO{sub 2}(aq), respectively. The dominant pathway for HNO{sub 3}(aq) acidity is scavenging of the nitric acid from the gas phase. HCOOH is produced because of the reaction of HCHO(aq) with OH(aq). The gas-phase concentrations of SO{sub 2}, H{sub 2}O{sub 2}, HO{sub 2}, OH, O{sub 3}, HCHO, NH{sub 3}, HNO{sub 3}, and HCl are of primary importance. An increase in the liquid water content of the cloud results in a decrease of the sulfate concentration but an increase of the total sulfate amount in the aqueous phase. A condensed mechanism is derived from the analysis.

• OSTI ID: 5383441
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 94:D1; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

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