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Atmosphere 2010, 1(1), 3-14; doi:10.3390/atmos1010003

Article

Correlation of Air Quality Data to Ultrafine Particles (UFP) Concentration and Size Distribution in Ambient Air

Felicitas Kwasny, Pierre Madl*  and Werner Hofmann

Division of Physics and Biophysics, Department of Materials Engineering and Physics, University of Salzburg, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria

* Author to whom correspondence should be addressed.

Received: 13 May 2010; in revised form: 1 June 2010 / Accepted: 4 June 2010 / Published: 12 July 2010

Download PDF Full-Text [530 KB, uploaded 12 July 2010 10:47 CEST]

Abstract: This study monitored ultrafine particles (UFP) concurrent with environmental air quality data, investigating whether already existing instrumentation used by environmental authorities can provide reference values for estimating UFP concentrations. Of particular interest was the relation of UFP to PM₁₀ (particulate matter) and nitrogen oxides (NOx, NO₂) in ambient air. Existing PM measurement methods alone did not correspond exactly enough with the actual particle number, but we observed a link between NO_x and NO₂ to UFP concentration. The combined data could act as proxy-indicator for authorities in estimating particle number concentrations, but cannot replace UFP monitoring.

Keywords: ultrafine particles; air quality monitoring; urban aerosols; particle number concentration; particle size distribution

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