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Cyrys, J. ; Peters, A. ; Soentgen, J.* ; Wichmann, H.-E.

Low emission zones reduce PM10 mass concentrations and diesel soot in German cities.

J. Air Waste Manag. Assoc. 64, 481-487 (2014)
In many European cities mass concentrations of PM10 (particles less than 10 μm in size) are still exceeding air quality standards as set by the European Commission in 1999. As a consequence, many cities introduced low emission zones (LEZs) to improve air quality and to meet the limit values. In Germany currently 48 LEZs are in operation. By means of dispersion modeling, PM10 concentrations were estimated to decrease up to 10%. Analysis of PM10 levels conducted for Cologne, Berlin, and Munich some time after the LEZs were introduced showed reduction of PM10 mass concentration in the estimated range. The PM10 particle fraction is, however, composed of particles with varying toxicity, of which diesel soot is highly health relevant. An evaluation of air quality data conducted in Berlin showed that in 2010 traffic-related soot concentrations measured along major roads decreased by 52% compared to 2007. Diesel particle emissions in Berlin were reduced in 2012 by 63% compared to a business-as-usual scenario (reference year 2007). A strong reduction of the traffic-related particle fraction of PM2.5 was also reported for Munich. Therefore, it is likely that the effects of LEZs are considerably more significant to human health than was anticipated when only considering the reduction of PM10 mass concentrations.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Air-pollution; Particulate Matter; Black Carbon; Health; No2; Project; Disease; Escape; Areas; Pm2.5
ISSN (print) / ISBN 0002-2470
e-ISSN 2162-2906
Quellenangaben Volume: 64, Issue: 4, Pages: 481-487 Article Number: , Supplement: ,
Publisher Routledge, Taylor & Francis Group
Publishing Place Philadelphia
Reviewing status Peer reviewed