Spatial and temporal variations of PM 1, PM 2.5, PM 10 and particle number concentration during the AUPHEP - Project

Abstract

The monitoring data for the PM mass fractions of PM 1, PM 2.5, PM 10 and TSP as well as the particle number concentrations at four sites in Austria (3 urban and 1 rural) and over a 1 year period are presented within this paper. The mass concentrations discussed are mostly based on TEOM measurements, but beta absorption and HiVol gravimetric sampling has been used in parallel. The data are compared with other European and world wide information available so far - for PM 1 the data base still is very poor. Generally the data fit into the Central European context as far as the long-term averages and the daily and seasonal pattern and the ratios between the various fractions are concerned. Annual means of mass concentrations for PM 1, PM 2.5 and PM 10 are in the order of 16, 20 and 28μgm -3 at the urban sites and a little bit lower at the rural site. In average PM 1 counted for about 50-60% and PM 2.5 for about 70% of PM 10.The number concentrations at the urban sites are in the upper European level and show a distinct seasonal cycle. At the rural site no seasonal influence can be seen. © 2004 Elsevier Ltd. All rights reserved.