NDLI: SO2 oxidation products other than H2SO4 as a trigger of new particle formation. Part 1: Laboratory investigations

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SO2 oxidation products other than H2SO4 as a trigger of new particle formation. Part 1: Laboratory investigations

Content Provider	Scilit
Author	Berndt, T. Stratmann, F. Bräsel, S. Heintzenberg, J. Laaksonen, A. Kulmala, M.
Copyright Year	2008
Description	Mechanistic investigations of atmospheric $H_{2}SO_{4}$ particle formation have been performed in a laboratory study taking either $H_{2}SO_{4}$ from a liquid reservoir or using the gas-phase reaction of OH radicals with $SO_{2}$. Applying both approaches for $H_{2}SO_{4}$ generation simultaneously it was found that $H_{2}SO_{4}$ evaporated from the liquid reservoir acts considerably less effective for the process of particle formation and growth than the products originating from the reaction of OH radicals with $SO_{2}$. Furthermore, for $NO_{x}$ concentrations $>5×10^{11}$ molecule $cm^{−3}$ the formation of new particles from the reaction of OH radicals with $SO_{2}$ is inhibited. This suggests that substances other than $H_{2}SO_{4}$ (potentially products from sulphur-containing peroxy radicals) trigger lower tropospheric new particle formation and growth. The currently accepted mechanism for $SO_{2}$ gas-phase oxidation does not consider the formation of such substances. The analysis of new particle formation for different reaction conditions in our experiment suggests that a contribution of impurities to the nucleation process is unlikely.
Ending Page	6374
Page Count	10
Starting Page	6365
e-ISSN	16807324
DOI	10.5194/acp-8-6365-2008
Journal	Atmospheric Chemistry and Physics
Issue Number	21
Volume Number	8
Language	English
Publisher	Copernicus GmbH
Publisher Date	2008-11-06
Access Restriction	Open
Subject Keyword	Atmospheric Sciences New Particle Formation
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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SO2 oxidation products other than H2SO4 as a trigger of new particle formation ? Part 1: Laboratory investigations

SO2 oxidation products other than H2SO4 as a trigger of new particle formation. Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications

SO2 oxidation products other than H2SO4 as a trigger of new particle formation ? Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications

$SO_{2}$ oxidation products other than $H_{2}SO_{4}$ as a trigger of new particle formation. Part 1: Laboratory investigations

$SO_{2}$ oxidation products other than $H_{2}SO_{4}$ as a trigger of new particle formation ? Part 1: Laboratory investigations

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$SO_{2}$ oxidation products other than $H_{2}SO_{4}$ as a trigger of new particle formation. Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications

Interactive comment on “ SO 2 oxidation products other than H 2 SO 4 as a trigger of new particle formation – Part 2 : Comparison of ambient and laboratory measurements , and atmospheric implications ”

$SO_{2}$ oxidation products other than $H_{2}SO_{4}$ as a trigger of new particle formation ? Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications

SO2 oxidation products other than H2SO4 as a trigger of new particle formation. Part 1: Laboratory investigations

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