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| Titel |
Real-time profiling of organic trace gases in the planetary boundary layer by PTR-MS using a tethered balloon |
| VerfasserIn |
R. Schnitzhofer, A. Wisthaler, A. Hansel |
| 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 ; 2, no. 2 ; Nr. 2, no. 2 (2009-12-03), S.773-777 |
| Datensatznummer |
250000582
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| Publikation (Nr.) |
 copernicus.org/amt-2-773-2009.pdf |
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| Zusammenfassung |
| A method for real-time profiling of volatile organic compounds
(VOCs) was developed combining the advantages of a tethered balloon
as a research platform and of proton transfer reaction mass
spectrometry (PTR-MS) as an analytical technique for fast and highly
sensitive VOC measurements. A 200 m Teflon tube was used to draw
sampling air from a tethered aerodynamic balloon to the PTR-MS
instrument. Positive and negative artefacts (i.e. formation and
loss of VOCs in the tube) were characterised in the laboratory and
in the field by a set of 11 atmospherically relevant VOCs including
both pure and oxygenated hydrocarbons. The only two compounds that
increased or decreased when sampled through the tube were acetone
(+7%) and xylene (-6%). The method was successfully deployed
during a winter field campaign to determine the small scale spatial
and temporal patterns of air pollutants under winter inversion
conditions. |
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