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The uptake of N 2 O 5 onto small sulfuric acid particles
Author(s) -
Hanson D. R.,
Lovejoy E. R.
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl02288
Subject(s) - sulfuric acid , aerosol , radius , analytical chemistry (journal) , extinction (optical mineralogy) , ionization , mie scattering , chemical ionization , ultraviolet , mass spectrometry , laminar flow , materials science , chemistry , inorganic chemistry , mineralogy , optics , chromatography , scattering , ion , light scattering , physics , organic chemistry , computer security , optoelectronics , computer science , thermodynamics
The probabilities for N 2 O 5 loss onto sulfuric acid aerosol (60–80 wt % H 2 SO 4 , 0.1–0.2 um radius, 230–300K) were measured using a laminar flow reactor coupled to a sulfuric acid aerosol source and a chemical ionization mass spectrometer. The aerosol morphology was extracted from measurements of the aerosol extinction of ultraviolet light (200–370nm) by using Mie theory. The reaction probabilities, γ, are large (0.06–0.12) and are comparable to probabilities measured previously under similar conditions on bulk sulfuric acid surfaces and small aerosol. These measurements confirm that the overall reaction of N 2 O 5 with H 2 O in/on 60–80% sulfuric acid is fast and the uptake is due to loss very close to the liquid surface.