 |
| Titel |
Source apportionment of PM2.5 in Cork Harbour, Ireland using a combination of single particle mass spectrometry and quantitative semi-continuous measurements |
| VerfasserIn |
R. M. Healy, S. Hellebust, I. Kourtchev, A. Allanic, I. P. O'Connor, J. M. Bell, D. A. Healy, J. R. Sodeau, J. C. Wenger |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 19 ; Nr. 10, no. 19 (2010-10-11), S.9593-9613 |
| Datensatznummer |
250008821
|
| Publikation (Nr.) |
 copernicus.org/acp-10-9593-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
| An aerosol time-of-flight mass spectrometer (ATOFMS) was deployed for the
measurement of the size resolved chemical composition of single particles at
a site in Cork Harbour, Ireland for three weeks in August 2008. The ATOFMS
was co-located with a suite of semi-continuous instrumentation for the
measurement of particle number, elemental carbon (EC), organic carbon (OC),
sulfate and particulate matter smaller than 2.5 μm in diameter
(PM2.5). The temporality of the ambient ATOFMS particle classes was
subsequently used in conjunction with the semi-continuous measurements to
apportion PM2.5 mass using positive matrix factorisation. The synergy
of the single particle classification procedure and positive matrix
factorisation allowed for the identification of six factors, corresponding
to vehicular traffic, marine, long-range transport, various combustion,
domestic solid fuel combustion and shipping traffic with estimated
contributions to the measured PM2.5 mass of 23%, 14%, 13%,
11%, 5% and 1.5% respectively. Shipping traffic was found to
contribute 18% of the measured particle number (20–600 nm mobility
diameter), and thus may have important implications for human health
considering the size and composition of ship exhaust particles. The positive
matrix factorisation procedure enabled a more refined interpretation of the
single particle results by providing source contributions to PM2.5
mass, while the single particle data enabled the identification of
additional factors not possible with typical semi-continuous measurements,
including local shipping traffic. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|