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| Titel |
Heterogeneous reaction of N2O5 with illite and Arizona test dust particles |
| VerfasserIn |
M. J. Tang, G. Schuster, J. N. Crowley |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 14, no. 1 ; Nr. 14, no. 1 (2014-01-09), S.245-254 |
| Datensatznummer |
250118255
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| Publikation (Nr.) |
 copernicus.org/acp-14-245-2014.pdf |
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| Zusammenfassung |
| The heterogeneous reaction of N2O5 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. N2O5 at concentrations in the range 8 to
24 × 1012 molecule cm−3 was monitored using thermal-dissociation
cavity ring-down spectroscopy at 662 nm. At zero relative humidity a large
uptake coefficient of N2O5 to illite was obtained, γ(N2O5)
= 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 N2O5 on
other mineral surfaces. |
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