Source apportionment of submicron organic aerosols at an urban site by factor analytical modelling of aerosol mass spectra

V. A. Lanz; M. R. Alfarra; U. Baltensperger; B. Buchmann; C. Hueglin; A. S H Prévôt

doi:10.5194/acp-7-1503-2007

Source apportionment of submicron organic aerosols at an urban site by factor analytical modelling of aerosol mass spectra

V. A. Lanz, M. R. Alfarra, U. Baltensperger, B. Buchmann, C. Hueglin, A. S H Prévôt

Research output: Contribution to journal › Article › peer-review

Abstract

Submicron ambient aerosol was characterized in summer 2005 at an urban background site in Zurich, Switzerland, during a three-week measurement campaign. Highly time-resolved samples of non-refractory aerosol components were analyzed with an Aerodyne aerosol mass spectrometer (AMS). Positive matrix factorization (PMF) was used for the first time for aerosol mass spectra to identify the main components of the total organic aerosol and their sources. The PMF retrieved factors were compared to measured reference mass spectra and were correlated with tracer species of the aerosol and gas phase measurements from collocated instruments. Six factors were found to explain virtually all variance in the data and could be assigned either to sources or to aerosol components such as oxygenated organic aerosol (OOA). Our analysis suggests that at the measurement site only a small (

Original language	English
Pages (from-to)	1503-1522
Number of pages	19
Journal	Atmospheric Chemistry and Physics
Volume	7
Issue number	6
DOIs	https://doi.org/10.5194/acp-7-1503-2007
Publication status	Published - 2007

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title = "Source apportionment of submicron organic aerosols at an urban site by factor analytical modelling of aerosol mass spectra",

abstract = "Submicron ambient aerosol was characterized in summer 2005 at an urban background site in Zurich, Switzerland, during a three-week measurement campaign. Highly time-resolved samples of non-refractory aerosol components were analyzed with an Aerodyne aerosol mass spectrometer (AMS). Positive matrix factorization (PMF) was used for the first time for aerosol mass spectra to identify the main components of the total organic aerosol and their sources. The PMF retrieved factors were compared to measured reference mass spectra and were correlated with tracer species of the aerosol and gas phase measurements from collocated instruments. Six factors were found to explain virtually all variance in the data and could be assigned either to sources or to aerosol components such as oxygenated organic aerosol (OOA). Our analysis suggests that at the measurement site only a small (",

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T1 - Source apportionment of submicron organic aerosols at an urban site by factor analytical modelling of aerosol mass spectra

AU - Lanz, V. A.

AU - Alfarra, M. R.

AU - Baltensperger, U.

AU - Buchmann, B.

AU - Hueglin, C.

AU - Prévôt, A. S H

PY - 2007

Y1 - 2007

N2 - Submicron ambient aerosol was characterized in summer 2005 at an urban background site in Zurich, Switzerland, during a three-week measurement campaign. Highly time-resolved samples of non-refractory aerosol components were analyzed with an Aerodyne aerosol mass spectrometer (AMS). Positive matrix factorization (PMF) was used for the first time for aerosol mass spectra to identify the main components of the total organic aerosol and their sources. The PMF retrieved factors were compared to measured reference mass spectra and were correlated with tracer species of the aerosol and gas phase measurements from collocated instruments. Six factors were found to explain virtually all variance in the data and could be assigned either to sources or to aerosol components such as oxygenated organic aerosol (OOA). Our analysis suggests that at the measurement site only a small (

AB - Submicron ambient aerosol was characterized in summer 2005 at an urban background site in Zurich, Switzerland, during a three-week measurement campaign. Highly time-resolved samples of non-refractory aerosol components were analyzed with an Aerodyne aerosol mass spectrometer (AMS). Positive matrix factorization (PMF) was used for the first time for aerosol mass spectra to identify the main components of the total organic aerosol and their sources. The PMF retrieved factors were compared to measured reference mass spectra and were correlated with tracer species of the aerosol and gas phase measurements from collocated instruments. Six factors were found to explain virtually all variance in the data and could be assigned either to sources or to aerosol components such as oxygenated organic aerosol (OOA). Our analysis suggests that at the measurement site only a small (

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DO - 10.5194/acp-7-1503-2007

M3 - Article

SN - 1680-7324

VL - 7

SP - 1503

EP - 1522

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

IS - 6

ER -

Source apportionment of submicron organic aerosols at an urban site by factor analytical modelling of aerosol mass spectra

Abstract

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