ISSN:
1573-0662
Keywords:
Atmosphere
;
aerosol particles
;
metal catalyst
;
peroxy radical
;
hydrogen peroxide
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
Notes:
Abstract To determine if Cu mediated reactions on atmospheric particles are important to HO2• chemistry in the ambient atmosphere, Cu molalities were calculated from measured Cu aerosol particle concentrations, mass and number size distribution data from a site in central Sweden. A comparison of characteristic times indicates that at low relative humidities the reaction is limited by the mass transport of gas phase HO2• to the particle surface and not by the chemical kinetics of the aqueous reaction. Comparison of half-lives for particle reactions and the gas phase destruction of HO2• to form H2O2 indicate that heterogeneous reactions on aerosol particles may have important consequences on the chemistry of HO2• and H2O2 in the troposphere.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00115775
