Next Article in Journal
Tracing Sources of Total Gaseous Mercury to Yongheung Island off the Coast of Korea
Previous Article in Journal
Mercury Speciation at a Coastal Site in the Northern Gulf of Mexico: Results from the Grand Bay Intensive Studies in Summer 2010 and Spring 2011
Article Menu

Export Article

Open AccessArticle
Atmosphere 2014, 5(2), 252-272; doi:10.3390/atmos5020252

Assessing the Influence of Seasonal and Spatial Variations on the Estimation of Secondary Organic Carbon in Urban Particulate Matter by Applying the EC-Tracer Method

1
Geography Department, Humboldt-Universität zu Berlin, Unter den Linden 6, D-10099 Berlin, Germany
2
German Federal Environmental Agency, Corrensplatz 1, D-14195 Berlin, Germany
3
German Federal Environmental Agency, Wörlitzer Platz 1, D-06844 Dessau-Roßlau, Germany
4
Biology Department, Humboldt-Universität zu Berlin, Unter den Linden 6, D-10099 Berlin, Germany
Current Affiliation: German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, D-10589 Berlin, Germany.
*
Author to whom correspondence should be addressed.
Received: 15 January 2014 / Revised: 22 March 2014 / Accepted: 16 April 2014 / Published: 29 April 2014
View Full-Text   |   Download PDF [2749 KB, uploaded 29 April 2014]   |  

Abstract

The elemental carbon (EC)-tracer method was applied to PM10 and PM1 data of three sampling sites in the City of Berlin from February to October 2010. The sites were characterized by differing exposure to traffic and vegetation. The aim was to determine the secondary organic carbon (SOC) concentration and to describe the parameters influencing the application of the EC-tracer method. The evaluation was based on comparisons with results obtained from positive matrix factorization (PMF) applied to the same samples. To obtain site- and seasonal representative primary OC/EC-ratios ([OC/EC]p), the EC-tracer method was performed separately for each station, and additionally discrete for samples with high and low contribution of biomass burning. Estimated SOC-concentrations for all stations were between 11% and 33% of total OC. SOC-concentrations obtained with PMF exceeded EC-tracer results more than 100% at the park in the period with low biomass burning emissions in PM10. The deviations were besides others attributed to the high ratio of biogenic to combustion emissions and to direct exposure to vegetation. The occurrences of biomass burning emissions in contrast lead to increased SOC-concentrations compared to PMF in PM10. The obtained results distinguish that the EC-tracer-method provides well comparable results with PMF if sites are strongly influenced by one characteristic primary combustion source, but was found to be adversely influenced by direct and relatively high biogenic emissions.
Keywords: urban aerosol; secondary aerosol; EC-tracer; PMF; vegetation; biomass burning urban aerosol; secondary aerosol; EC-tracer; PMF; vegetation; biomass burning
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Wagener, S.; Langner, M.; Hansen, U.; Moriske, H.-J.; Endlicher, W.R. Assessing the Influence of Seasonal and Spatial Variations on the Estimation of Secondary Organic Carbon in Urban Particulate Matter by Applying the EC-Tracer Method. Atmosphere 2014, 5, 252-272.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Atmosphere EISSN 2073-4433 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top