 |
| Titel |
High time-resolution chemical characterization of the water-soluble fraction of ambient aerosols with PILS-TOC-IC and AMS |
| VerfasserIn |
H. Timonen, M. Aurela, S. Carbone, K. Saarnio, S. Saarikoski, T. Mäkelä, M. Kulmala  , V.-M. Kerminen, D. R. Worsnop, R. Hillamo |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1867-1381
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 3, no. 4 ; Nr. 3, no. 4 (2010-08-18), S.1063-1074 |
| Datensatznummer |
250001220
|
| Publikation (Nr.) |
 copernicus.org/amt-3-1063-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
A particle-into-liquid sampler (PILS) was coupled with a total organic
carbon analyzer (TOC) and two ion chromatographs (IC) to enable high
time-resolution measurements of water-soluble ions and water-soluble organic
carbon (WSOC) by a single sampling and analytical set-up. The new high
time-resolution measurement system, the PILS-TOC-IC, was able to provide
essential chemical and physical information about fast changes in
composition, concentrations and likely sources of the water-soluble fraction
of atmospheric aerosol. The concentrations of major water-soluble ions and
WSOC were measured by the PILS-TOC-IC system from 25 April to 28 May 2009.
The data of the PILS-TOC-IC setup was compared with the data from the
High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) data
measured from 25 April to 8 May 2009. The measured water-soluble
particulate organic matter (WSPOM) concentration varied typically from 0.10
to 8.8 μg m−3 (on average 1.5 μg m−3). The WSPOM
contributed on average 51% to particulate organic matter (POM) measured
with the AMS. The correlation between the data of all the online measurement
devices (AMS, PILS-TOC-IC, semicontinuous EC/OC carbon analyzer and TEOM)
was excellent. For sulfate, nitrate and ammonium the correlations between
the PILS-TOC-IC and AMS were 0.93, 0.96 and 0.96, respectively. The
correlation between WSPOM and POM was also strong (r = 0.88). The identified
sources of WSPOM were long-range transported biomass burning and secondary
organic aerosol (SOA) formation. WSPOM and oxalate produced in biomass
burning were clearly correlated with carbon monoxide. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|