Aerosol Science 35 (2004) 1135 – 1149 www.elsevier.com/locate/jaerosci

On the equivalence of gravimetric PM data with TEOM and beta-attenuation measurements Helger Haucka; b;∗ , Axel Bernera; c , Bostjan Gomisceka , Silke Stopper a , Hans Puxbauma; d , Michael Kundib , Othmar Preininga b

a Clean Air Commission, Austrian Academy of Sciences, Postgasse 7-9/4/3, 1010 Vienna, Austria Institute of Environmental Health, Medical University of Vienna, Kinderspitalgasse 15, 1095 Vienna, Austria c Institute for Experimental Physics, University of Vienna, Strudlhofgasse 4, 1090 Vienna, Austria d Institute for Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9/7/4, 1060 Vienna, Austria

Received 6 February 2004; received in revised form 16 April 2004; accepted 19 April 2004

Abstract Measurement methods for continuous monitoring of the mass concentration of particulate matter (PM) frequently yield data which di7er from standardized manual gravimetric methods. The data set from a 1 year measurement period at four sites in Austria was used to analyze the results from gravimetric (high volume sampling) and automated methods (TEOMJ and beta-attenuation). Grouping of the data according to season (average temperature) and chemical composition (in particular nitrate) showed good agreement of the various methods for summer and even better for low nitrate content. Correction for nitrate from experimental data and also from modeled nitrate improved the agreement also for winter data and higher nitrate concentrations. At least for the situation in Central Europe adequate conversion factors can be derived from information about the nitrate content of PM between data based on di7erent measuring methods. ? 2004 Elsevier Ltd. All rights reserved. Keywords: PM-monitoring; Gravimetry; Filter losses; Semi-volatile material; TEOM; Beta-attenuation; HiVol

1. Introduction The