Document Detail


Semi volatile organic compounds in ambient PM2.5. Seasonal trends and daily resolved source contributions.
MedLine Citation:
PMID:  17612155     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Concentrations of ambient semivolatile organic compounds (SVOC) in the PM2.5 fraction of Augsburg, Germany, have been monitored on a daily basis from January 2003 through December 2004. Samples were taken in a large garden in the city center. Quantitative analysis of n-alkanes, alkanones, alkanoic acid methylesters, long chain linear alkyl benzenes and toluenes, hopanes, polycyclic aromatic hydrocarbons (PAH) and oxidized PAH, and some abietan type diterpenes was done. All compounds showed distinct seasonal variations in concentration. Most compounds showed highest concentrations during the cold seasons, but some n-alkanones and 6,10,14-trimethylpentadecanone showed maximum concentration during summer. Changes in patterns between and within compound classes were obvious, e.g., the hopane pattern exhibited a strong seasonal variation. The main source related contributions to changes observed were discussed. Using positive matrix factorization (PMF) for the statistical investigation of the data set, five factors have been separated. These factors are dominated by the pattern of single sources or groups of similar sources: factor 1, lubricating oil; factor 2, emissions of unburned diesel and heating oil consumption; factor 3, wood combustion; factor 4, brown coal combustion; and factor 5, biogenic emissions and transport components. Like the SVOC, the factors showed strong seasonality with highest values in winter for factors 1-4 and in summer for factor 5.
Authors:
Jürgen Schnelle-Kreis; Martin Sklorz; Jürgen Orasche; Matthias Stölzel; Annette Peters; Ralf Zimmermann
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  41     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-07-06     Completed Date:  2007-08-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3821-8     Citation Subset:  IM    
Affiliation:
Department of Chemistry, Bavarian Institute of Applied Environmental Research and Technology, BIfA GmbH, Am Mittleren Moos 46, 86167 Augsburg, Germany. jschnellekreis@bifa.de
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / analysis*,  chemistry
Environmental Monitoring*
Germany
Organic Chemicals / analysis,  chemistry
Particle Size
Particulate Matter / analysis*,  chemistry
Seasons*
Chemical
Reg. No./Substance:
0/Air Pollutants; 0/Organic Chemicals; 0/Particulate Matter

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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