Toward a general parameterization of N2O5 reactivity on aqueous particles: the competing effects of particle liquid water, nitrate and chloride
Item
Title (Dublin Core)
Toward a general parameterization of N2O5 reactivity on aqueous particles: the competing effects of particle liquid water, nitrate and chloride
Description (Dublin Core)
The heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> on mixed organic-inorganic aerosol particles was investigated using an entrained aerosol flow tube coupled to a custom-built chemical ionization mass spectrometer. Laboratory results on aqueous particles confirm a strong dependence of the reactive uptake coefficient (γ) on particle liquid water, for particle water concentrations below 15 M, and the molar ratio of particle water to nitrate. Measurements of γ (N<sub>2</sub>O<sub>5</sub>) on mixed chloride-nitrate particles indicate that the presence of trace chloride can negate the suppression of γ(N<sub>2</sub>O<sub>5</sub>) at high nitrate loadings with implications for polluted coastal regions. These results are used to construct a new parameterization for γ (N<sub>2</sub>O<sub>5</sub>), that when coupled to an aerosol thermodynamics model, can be used within regional and/or global chemical transport models.
Creator (Dublin Core)
Bertram, T. H.
Thornton, J. A.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-9-8351-2009
https://acp.copernicus.org/articles/9/8351/2009/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
