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| Titel |
Online determination of levoglucosan in ambient aerosols with particle-into-liquid sampler – high-performance anion-exchange chromatography – mass spectrometry (PILS–HPAEC–MS) |
| VerfasserIn |
K. Saarnio, K. Teinilä, S. Saarikoski, S. Carbone, S. Gilardoni, H. Timonen, M. Aurela, R. Hillamo |
| 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 ; 6, no. 10 ; Nr. 6, no. 10 (2013-10-25), S.2839-2849 |
| Datensatznummer |
250085092
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| Publikation (Nr.) |
 copernicus.org/amt-6-2839-2013.pdf |
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| Zusammenfassung |
| Biomass burning, such as domestic heating, agricultural, and wild open-land
fires, has a significant influence on the atmosphere at the global and,
especially, at the local scale. Levoglucosan has been shown to be a good
tracer for biomass burning emissions in atmospheric particulate matter, and
several analytical techniques have been presented for the determination of
levoglucosan from filter samples. In this paper, a novel combination of a
particle-into-liquid sampler (PILS) to a high-performance anion-exchange
chromatograph (HPAEC) with the detection by a mass spectrometer (MS) is
presented for the online analysis of levoglucosan in ambient particles. The
PILS–HPAEC–MS technique enables a fast online analysis of levoglucosan
from the particulate samples. The method was tested at an urban background
station in Helsinki, Finland, in winter 2011. A comparison with simultaneous
levoglucosan measurements from filter samples by the HPAEC–MS was performed
and it showed a good agreement between the online and offline methods.
Additionally, the online levoglucosan data were compared with the biomass
burning tracer fragments measured by a high-resolution time-of-flight
aerosol mass spectrometer (HR-ToF-AMS). As there were no local biomass
burning sources close to the measurement station, online levoglucosan
measurements revealed that most of the particles from biomass burning were
either regionally distributed or long-range transported in the urban
background of Helsinki. The average levoglucosan concentrations were
relatively low (average 0.083 μg m−3) during the measurement
campaign. The highest concentration peak measured for levoglucosan (1.4 μg m−3)
seemed to originate from biomass burning in the Baltic countries, likely in Estonia, that was transported to Helsinki. |
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