Heterogeneous reaction of N2O5 with illite and Arizona test dust particles
Item
Title (Dublin Core)
Heterogeneous reaction of N2O5 with illite and Arizona test dust particles
Description (Dublin Core)
The heterogeneous reaction of N<sub>2</sub>O<sub>5</sub> with airborne illite and Arizona test dust (ATD) particles was investigated at room temperature and at different relative humidities using an atmospheric pressure aerosol flow tube. N<sub>2</sub>O<sub>5</sub> at concentrations in the range 8 to 24 × 10<sup>12</sup> molecule cm<sup>−3</sup> was monitored using thermal-dissociation cavity ring-down spectroscopy at 662 nm. At zero relative humidity a large uptake coefficient of N<sub>2</sub>O<sub>5</sub> to illite was obtained, γ(N<sub>2</sub>O<sub>5</sub>) = 0.09, which decreased to 0.04 as relative humidity was increased to 67%. In contrast, the uptake coefficient derived for ATD is much lower (~0.006) and displays a weaker (if any) dependence on relative humidity (0–67%). Potential explanations are given for the significant differences between the uptake behaviour for ATD and illite and the results are compared with uptake coefficients for N<sub>2</sub>O<sub>5</sub> on other mineral surfaces.
Creator (Dublin Core)
Tang, M. J.
Schuster, G.
Crowley, J. N.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-14-245-2014
https://acp.copernicus.org/articles/14/245/2014/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
