Thermal Desorption/Tunable Vacuum–Ultraviolet Time-of-Flight Photoionization Aerosol Mass Spectrometry for Investigating Secondary Organic Aerosols in Chamber Experiments

2011 ◽  
Vol 83 (23) ◽  
pp. 9024-9032 ◽  
Author(s):  
Wenzheng Fang ◽  
Lei Gong ◽  
Xiaobin Shan ◽  
Fuyi Liu ◽  
Zhenya Wang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Thermal Desorption ◽  
Vacuum Ultraviolet ◽  
Secondary Organic Aerosols ◽  
Time Of Flight ◽  
Organic Aerosols ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

Online analysis of secondary organic aerosols from OH-initiated photooxidation and ozonolysis of α-pinene, β-pinene, Δ3-carene and d-limonene by thermal desorption–photoionisation aerosol mass spectrometry

2017 ◽  
Vol 14 (2) ◽  
pp. 75 ◽  
Author(s):  
Wenzheng Fang ◽  
Lei Gong ◽  
Liusi Sheng
Keyword(s):  
Mass Spectrometry ◽  
Thermal Desorption ◽  
Mass Spectra ◽  
Secondary Organic Aerosols ◽  
Organic Aerosols ◽  
Organic Aerosol ◽  
Oxidation Products ◽  
Online Analysis ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

Environmental contextSecondary organic aerosol, formed by oxidation of volatile precursors such as monoterpenes, is a major contributor to the total atmospheric organic aerosol. We focus on the online mass spectrometric analysis of the aerosol generated by oxidation products of four major monoterpenes in an environmental chamber. Numerous important monoterpene oxidation products were clearly observed and provided a direct comparison of the formation of biogenic secondary organic aerosols. AbstractWe present here thermal desorption–tunable vacuum ultraviolet time-of-flight photoionisation aerosol mass spectrometry (TD-VUV-TOF-PIAMS) for online analysis of biogenic secondary organic aerosols (BSOAs) formed from OH-initiated photooxidation and dark ozonolysis of α-pinene, β-pinene, Δ3-carene and d-limonene in smog chamber experiments. The ‘soft’ ionisation at near-threshold photon energies (≤10.5eV) used in this study permits direct measurement of the fairly clean mass spectra, facilitating molecular identification. The online BSOA mass spectra compared well with previous offline measurements and most of the important monoterpene oxidation products were clearly found in the online mass spectra. Oxidation products such as monoterpene-derived acids (e.g. pinic acid, pinonic acid, 3-caronic acid, limononic acid, limonalic acid), ketones (e.g. norpinone, limonaketone), aldehydes (e.g. caronaldehyde, norcaronaldehyde, limononaldehyde) and multifunctional organics (e.g. hydroxypinonaldehydes, hydroxy-3-caronic aldehydes, hydroxylimononic acid) were tentatively identified. The online TD-VUV-TOF-PIAMS mass spectra showed that the OH-initiated photooxidation and ozonolysis of the same monoterpenes produced some similar BSOA products; for example, 3-caric acid, 3-caronic acid, 3-norcaronic acid, 3-norcaralic acid, caronaldehyde and norcaronaldehyde were observed in both photooxidation and ozonolysis of Δ3-carene. However, they could be formed through different pathways. Some of the same products and isomers (e.g. 10-oxopinonic acid, pinonic acid, norpinic acid, hydroxyl pinonaldehyde, norpinonic acid, norpinone) were formed during the photooxidation and ozonolysis of α-pinene and β-pinene. However, several different BSOA products were generated in these photooxidation and ozonolysis reactions due to their different parent structures. The OH–monoterpene reaction generated higher-molecular-weight products than O3–monoterpene owing to multiple OH additions to the unsaturated carbon bond. The online observation of key BSOA products provided a direct comparison of BSOA formation among different monoterpenes and insights into the formation pathways in the OH-initiated photooxidation and ozonolysis of monoterpenes.

O/C and OM/OC Ratios of Primary, Secondary, and Ambient Organic Aerosols with High-Resolution Time-of-Flight Aerosol Mass Spectrometry

2008 ◽  
Vol 42 (12) ◽  
pp. 4478-4485 ◽  
Author(s):  
Allison C. Aiken ◽  
Peter F. DeCarlo ◽  
Jesse H. Kroll ◽  
Douglas R. Worsnop ◽  
J. Alex Huffman ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Time Of Flight ◽  
Organic Aerosols ◽  
Resolution Time ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

Near-Infrared Laser Desorption/Ionization Aerosol Mass Spectrometry for Investigating Primary and Secondary Organic Aerosols under Low Loading Conditions†

2010 ◽  
Vol 82 (19) ◽  
pp. 7915-7923 ◽  
Author(s):  
Scott Geddes ◽  
Brian Nichols ◽  
Stevenson Flemer ◽  
Jessica Eisenhauer ◽  
James Zahardis ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Near Infrared ◽  
Secondary Organic Aerosols ◽  
Organic Aerosols ◽  
Laser Desorption ◽  
Laser Desorption Ionization ◽  
Loading Conditions ◽  
Desorption Ionization ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

Identification of secondary organic aerosols based on aerosol mass spectrometry

2010 ◽  
Vol 53 (12) ◽  
pp. 2593-2599 ◽  
Author(s):  
XiaoFeng Huang ◽  
QianBiao Zhao ◽  
LingYan He ◽  
Min Hu ◽  
QiJing Bian ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Secondary Organic Aerosols ◽  
Organic Aerosols ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

scholarly journals Characterization of urban aerosol in Cork City (Ireland) using aerosol mass spectrometry

2012 ◽  
Vol 12 (11) ◽  
pp. 29657-29704 ◽  
Author(s):  
M. Dall'Osto ◽  
J. Ovadnevaite ◽  
D. Ceburnis ◽  
D. Martin ◽  
R. M. Healy ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectrometer ◽  
Urban Areas ◽  
Time Of Flight ◽  
Organic Aerosols ◽  
Organic Matrix ◽  
Organic Aerosol ◽  
Urban Aerosol ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

Abstract. Ambient wintertime background urban aerosol in Cork City, Ireland, was characterized using aerosol mass spectrometry. During the three-week measurement study in 2009, 93% of the 1 200 000 single particles characterized by an Aerosol Time-Of-Flight Mass Spectrometer (TSI ATOFMS) were classified into five organic-rich particle types, internally-mixed to different proportions with Elemental Carbon (EC), sulphate and nitrate while the remaining 7% was predominantly inorganic in nature. Non-refractory PM1 aerosol was also characterized using a High Resolution Time-Of-Flight Aerodyne Aerosol Mass Spectrometer (HR-ToF-AMS) and was also found to comprise organic matter as the most abundant species (62%), followed by nitrate (15%), sulphate (9%) and ammonium (9%), and then chloride (5%). Positive matrix factorization (PMF) was applied to the HR-ToF-AMS organic matrix and a five-factor solution was found to describe the variance in the data well. Specifically, "Hydrocarbon-like" Organic Aerosol (HOA) comprised 19% of the mass, "Oxygenated low volatility" Organic Aerosols (LV-OOA) comprised 19%, "Biomass wood Burning" Organic Aerosol (BBOA) comprised 23%, non-wood solid-fuel combustion "Peat and Coal" Organic Aerosol (PCOA) comprised 21%, and finally, a species type characterized by primary m/z peaks at 41 and 55, similar to previously-reported "Cooking" Organic Aerosol (COA) but possessing different diurnal variations to what would be expected for cooking activities, contributed 18%. Despite wood, cool and peat being minor fuel types used for domestic space heating in urban areas, their relatively low combustion efficiencies result in a significant contribution to PM1 aerosol mass (44% and 28% of the total organic aerosols mass and non refractory PM1, respectively).

Improved Understanding of Atmospheric Organic Aerosols via Innovations in Soft Ionization Aerosol Mass Spectrometry

2011 ◽  
Vol 83 (7) ◽  
pp. 2409-2415 ◽  
Author(s):  
James Zahardis ◽  
Scott Geddes ◽  
Giuseppe A. Petrucci
Keyword(s):  
Mass Spectrometry ◽  
Organic Aerosols ◽  
Soft Ionization ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

Aerosol Chemical Composition in Cloud Events by High Resolution Time-of-Flight Aerosol Mass Spectrometry

2013 ◽  
Vol 47 (6) ◽  
pp. 2645-2653 ◽  
Author(s):  
Liqing Hao ◽  
Sami Romakkaniemi ◽  
Aki Kortelainen ◽  
Antti Jaatinen ◽  
Harri Portin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Chemical Composition ◽  
High Resolution ◽  
Time Of Flight ◽  
Resolution Time ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry ◽  
Aerosol Chemical Composition

scholarly journals Flow-Tube Investigations of Hypergolic Reactions of a Dicyanamide Ionic Liquid Via Tunable Vacuum Ultraviolet Aerosol Mass Spectrometry

2016 ◽  
Vol 120 (41) ◽  
pp. 8011-8023 ◽  
Author(s):  
Steven D. Chambreau ◽  
Christine J. Koh ◽  
Denisia M. Popolan-Vaida ◽  
Christopher J. Gallegos ◽  
Justin B. Hooper ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ionic Liquid ◽  
Vacuum Ultraviolet ◽  
Flow Tube ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry
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