Source attribution of submicron organic aerosols during wintertime inversions by advanced factor analysis of aerosol mass spectra

被引：210

作者：

Lanz, Valentin A. ^{[1
]}

Alfarra, M. Rami ^{[2
]}

Baltensperger, Urs ^{[2
]}

Buchmann, Brigitte ^{[1
]}

Hueglin, Christoph ^{[1
]}

Szidat, Sonke ^{[2
,3
]}

Wehrli, Miriam N. ^{[3
]}

Wacker, Lukas ^{[4
]}

Weimer, Silke ^{[2
,5
]}

Caseiro, Alexandre ^{[6
,7
,8
]}

Puxbaum, Hans ^{[6
]}

Prevot, Andre S. H. ^{[2
]}

机构：

[1] Swiss Fed Labs Mat Testing & Res, Lab Air Pollut & Environm Technol, Empa, Dubendorf, Switzerland

[2] Paul Scherrer Inst, Lab Atmospher Chem, CH-5332 Villigen, Switzerland

[3] Univ Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland

[4] ETH, Inst Particle Phys, CH-8093 Zurich, Switzerland

[5] Empa, Swiss Fed Labs Mat Testing & Res, Lab Internal Combust Engines, Dubendorf, Switzerland

[6] Vienna Univ Technol, Inst Chem Technol & Analyt, A-1060 Vienna, Austria

[7] Univ Aveiro, CESAM, P-3810193 Aveiro, Portugal

[8] Univ Aveiro, Dept Environm & Planning, P-3810193 Aveiro, Portugal

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2008年 / 42卷 / 01期

基金：

英国自然环境研究理事会;

关键词：

D O I：

10.1021/es0707207

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Real-time measurements of submicrometer aerosol were performed using an Aerodyne aerosol mass spectrometer (AMS) during three weeks at an urban background site in Zurich (Switzerland) in January 2006. A hybrid receptor model which incorporates a priori known source composition was applied to the AMS highly time-resolved organic aerosol mass spectra. Three sources and components of submicrometer organic aerosols were identified: the major component was oxygenated organic aerosol (OOA), mostly representing secondary organic aerosol and accounting on average for 52-57% of the particulate organic mass. Radiocarbon (C-14) measurements of organic carbon (OC) indicated that similar to 31 and similar to 69% of OOA originated from fossil and nonfossil sources, respectively. OOA estimates were strongly correlated with measured particulate ammonium. Particles from wood combustion (35-40%) and 3-13% traffic-related hydrocarbon-like organic aerosol (HOA) accounted for the other half of measured organic matter (OM). Emission ratios of modeled HOA to measured nitrogen oxides (NOx) and OM from wood burning to levoglucosan from filter analyses were found to be consistent with literature values.

引用

页码：214 / 220

页数：7

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