Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-11687-2019 |
Seasonal characteristics of organic aerosol chemical composition and volatility in Stuttgart, Germany | |
Huang, Wei1,2; Saathoff, Harald1; Shen, Xiaoli1,2; Ramisetty, Ramakrishna1,5; Leisner, Thomas1,3; Mohr, Claudia4 | |
2019-09-19 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:18页码:11687-11700 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Sweden; India |
英文摘要 | The chemical composition and volatility of organic aerosol (OA) particles were investigated during July-August 2017 and February-March 2018 in the city of Stuttgart, one of the most polluted cities in Germany. Total non-refractory particle mass was measured with a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS; hereafter AMS). Aerosol particles were collected on filters and analyzed in the laboratory with a filter inlet for gases and aerosols coupled to a high-resolution time-of-flight chemical ionization mass spectrometer (FIGAERO-HR-ToF-CIMS; hereafter CIMS), yielding the molecular composition of oxygenated OA (OOA) compounds. While the average organic mass loadings are lower in the summer period (5.1 +/- 3.2 mu g m(-3)) than in the winter period (8.4 +/- 5.6 mu g m(-3)), we find relatively larger mass contributions of organics measured by AMS in summer (68.8 +/- 13.4 %) compared to winter (34.8 +/- 9.5 %). CIMS mass spectra show OOA compounds in summer have O : C of 0.82 +/- 0.02 and are more influenced by biogenic emissions, while OOA compounds in winter have O : C of 0.89 +/- 0.06 and are more influenced by biomass burning emissions. Volatility parametrization analysis shows that OOA in winter is less volatile with higher contributions of low-volatility organic compounds (LVOCs) and extremely low-volatility organic compounds (ELVOCs). We partially explain this by the higher contributions of compounds with shorter carbon chain lengths and a higher number of oxygen atoms, i.e., higher O : C in winter. Organic compounds desorbing from the particles deposited on the filter samples also exhibit a shift of signal to higher desorption temperatures (i.e., lower apparent volatility) in winter. This is consistent with the relatively higher O : C in winter but may also be related to higher particle viscosity due to the higher contributions of larger-molecular-weight LVOCs and ELVOCs, interactions between different species and/or particles (particle matrix), and/or thermal decomposition of larger molecules. The results suggest that whereas lower temperature in winter may lead to increased partitioning of semi-volatile organic compounds (SVOCs) into the particle phase, this does not result in a higher overall volatility of OOA in winter and that the difference in sources and/or chemistry between the seasons plays a more important role. Our study provides insights into the seasonal variation of the molecular composition and volatility of ambient OA particles and into their potential sources. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000486705200002 |
WOS关键词 | ALPHA-PINENE OZONOLYSIS ; AIR-POLLUTION ; MASS-SPECTROMETER ; MOLECULAR COMPOSITION ; SOURCE APPORTIONMENT ; PARTICULATE MATTER ; BASIS-SET ; PHASE ; OXIDATION ; GAS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187120 |
专题 | 地球科学 |
作者单位 | 1.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, D-76344 Eggenstein Leopoldshafen, Germany; 2.Karlsruhe Inst Technol, Inst Geog & Geoecol, Working Grp Environm Mineral & Environm Syst Anal, D-76131 Karlsruhe, Germany; 3.Heidelberg Univ, Inst Environm Phys, D-69120 Heidelberg, Germany; 4.Stockholm Univ, Dept Environm Sci & Analyt Chem, S-11418 Stockholm, Sweden; 5.TSI Instruments India Private Ltd, Bangalore 560102, Karnataka, India |
推荐引用方式 GB/T 7714 | Huang, Wei,Saathoff, Harald,Shen, Xiaoli,et al. Seasonal characteristics of organic aerosol chemical composition and volatility in Stuttgart, Germany[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(18):11687-11700. |
APA | Huang, Wei,Saathoff, Harald,Shen, Xiaoli,Ramisetty, Ramakrishna,Leisner, Thomas,&Mohr, Claudia.(2019).Seasonal characteristics of organic aerosol chemical composition and volatility in Stuttgart, Germany.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(18),11687-11700. |
MLA | Huang, Wei,et al."Seasonal characteristics of organic aerosol chemical composition and volatility in Stuttgart, Germany".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.18(2019):11687-11700. |
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