Sources of atmospheric carbonaceous particulate matter in Pittsburgh, Pennsylvania.
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TLDR
The results from this analysis show a strong monthly dependence on SOA contribution to the total organic PM concentration, varying from near zero during winter months to 50% or more of the total OC concentration in the summer.Abstract:
The organic carbon (OC)/elemental carbon (EC) tracer method is applied to the Pittsburgh, PA, area to estimate the contribution of secondary organic aerosol (SOA) to the monthly average concentration of organic particulate matter (PM) during 1995. An emissions inventory is constructed for the primary emissions of OC and EC in the area of interest. The ratio of primary emissions of OC to those of EC ranges between 2.4 in the winter months and 1.0 in the summer months. A mass balance model and ambient measurements were used to assess the accuracy of the emissions inventory. It is estimated to be accurate to within 50%. The results from this analysis show a strong monthly dependence of the SOA contribution to the total organic PM concentration, varying from near zero during winter months to as much as 50% of the total OC concentration in the summer.read more
Citations
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Journal ArticleDOI
Source apportionment of submicron organic aerosols at an urban site by factor analytical modelling of aerosol mass spectra
V. A. Lanz,M. R. Alfarra,Urs Baltensperger,Brigitte Buchmann,Christoph Hueglin,André S. H. Prévôt +5 more
TL;DR: In this article, positive matrix factorization (PMF) was used for the first time for aerosol mass spectra to identify the main com- ponents of the total organic aerosol and their sources.
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Deconvolution and quantification of hydrocarbon-like and oxygenated organic aerosols based on aerosol mass spectrometry
Qi Zhang,M. Rami Alfarra,Douglas R. Worsnop,James Allan,Hugh Coe,Manjula R. Canagaratna,Jose L. Jimenez +6 more
TL;DR: The findings indicate the potential of performing organic source apportionment on the basis of total particle mass, rather than on the based of organic tracer compounds that contribute a small fraction of this mass.
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Hydrocarbon-like and oxygenated organic aerosols in Pittsburgh: insights into sources and processes of organic aerosols
TL;DR: In this paper, Zhang et al. used a recently developed algorithm (Zhang et al., 2005) to deconvolve the mass spectra of organic aerosols acquired with the AMS in Pittsburgh during September 2002.
Journal ArticleDOI
Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi'an, China
Junji Cao,Fangkun Wu,Judith C. Chow,Shuncheng Lee,Yang Li,S. W. Chen,Zhisheng An,K. Fung,John G. Watson,Chongshu Zhu,Sijin Liu +10 more
TL;DR: In this article, continuous measurements of atmospheric organic and elemental carbon (OC and EC) were taken during the high-pollution fall and winter seasons at Xi'an, Shaanxi Province, China from September 2003 through February 2004.
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Sources of carbonaceous aerosols over the United States and implications for natural visibility
TL;DR: In this article, the authors used multiple linear regression to fit the IMPROVE data and found that fire emissions from Mexico and Canada contributed 40% to 70% of the annual mean natural EC in the United States for 1998 and 20% to 30% of natural OC.
References
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