ISSN:
1573-0662
Keywords:
Aerosol volume
;
SO4 2- aerosol
;
SO2 oxidation
;
HC/NO x ratios
;
HO radical
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
Notes:
Abstract The photochemical oxidation of SO2 in the presence of NO and C3H6 was studied in a 18.2 liter pyrex reactor. When light intensity, irradiation time and SO2 concentration were constant, SO4 2- concentration, derived from the total volume of aerosol produced, peaked when [C3H6]/[NO] was approximately 6.0. Another increase im SO4 2- formation was reached at very high ratios (〉50). The experimental observations are consistent with the two SO2 oxidation mechanisms. At low [C3H6]/[NO] ratios, the processes proceed via the HO−SO2 reaction, while at high ratios the O3−C3H6 adduct is assumed to oxidize SO2 to produce SO4 2- aerosols.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00051080
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