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| Titel |
Dimethylamine and ammonia measurements with ion chromatography during the CLOUD4 campaign |
| VerfasserIn |
A. P. Praplan, F. Bianchi, J. Dommen, U. Baltensperger |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 5, no. 9 ; Nr. 5, no. 9 (2012-09-07), S.2161-2167 |
| Datensatznummer |
250003083
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| Publikation (Nr.) |
 copernicus.org/amt-5-2161-2012.pdf |
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| Zusammenfassung |
| The CLOUD project investigates the influence of galactic cosmic rays on the nucleation
of new particles in an environmental chamber at CERN. Dimethylamine (DMA) was injected
intentionally into the CLOUD chamber to reach atmospherically relevant levels away from
sources (up to 100 pptv) in order to study its effect on nucleation with sulphuric acid
and water at 278 K.
Quantification of DMA and also background ammonia (NH3) was performed with ion
chromatography (IC). The IC method used together with the sampling line developed for CLOUD
in order to measure NH3 and DMA at low pptv levels is described; the overall
sampling efficiency of the method is discussed; and, finally, mixing ratios of NH3 and DMA measured during CLOUD4 are reported. |
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