scholarly journals Characterization of Secondary Organic Aerosol Precursors Using Two-Dimensional Gas Chromatography with Time of Flight Mass Spectrometry (GC×GC/TOFMS)

2000 ◽  
Author(s):  
Melissa Roskamp
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Secondary Organic Aerosol ◽  
Time Of Flight ◽  
Organic Aerosol ◽  
Two Dimensional ◽  
Flight Mass Spectrometry

Characterization of cerebrospinal fluid by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry

2013 ◽  
Vol 1293 ◽  
pp. 142-149 ◽  
Author(s):  
Minna Hartonen ◽  
Ismo Mattila ◽  
Anna-Liisa Ruskeepää ◽  
Matej Orešič ◽  
Tuulia Hyötyläinen
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Cerebrospinal Fluid ◽  
Time Of Flight ◽  
Two Dimensional ◽  
Flight Mass Spectrometry

Characterization of lipids in complex samples using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry

2005 ◽  
Vol 1086 (1-2) ◽  
pp. 2-11 ◽  
Author(s):  
Eric Jover ◽  
Mohamed Adahchour ◽  
Josep M. Bayona ◽  
René J.J. Vreuls ◽  
Udo A.Th. Brinkman
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Time Of Flight ◽  
Two Dimensional ◽  
Complex Samples ◽  
Flight Mass Spectrometry

scholarly journals Multi-instrument comparison and compilation of non-methane organic gas emissions from biomass burning and implications for smoke-derived secondary organic aerosol precursors

2017 ◽  
Vol 17 (2) ◽  
pp. 1471-1489 ◽  
Author(s):  
Lindsay E. Hatch ◽  
Robert J. Yokelson ◽  
Chelsea E. Stockwell ◽  
Patrick R. Veres ◽  
Isobel J. Simpson ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Biomass Burning ◽  
Secondary Organic Aerosol ◽  
Carbon Number ◽  
Time Of Flight ◽  
Organic Aerosol ◽  
Emission Factors ◽  
Gas Chromatography Mass Spectrometry ◽  
Flight Mass Spectrometry

Abstract. Multiple trace-gas instruments were deployed during the fourth Fire Lab at Missoula Experiment (FLAME-4), including the first application of proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOFMS) and comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry (GC × GC-TOFMS) for laboratory biomass burning (BB) measurements. Open-path Fourier transform infrared spectroscopy (OP-FTIR) was also deployed, as well as whole-air sampling (WAS) with one-dimensional gas chromatography–mass spectrometry (GC-MS) analysis. This combination of instruments provided an unprecedented level of detection and chemical speciation. The chemical composition and emission factors (EFs) determined by these four analytical techniques were compared for four representative fuels. The results demonstrate that the instruments are highly complementary, with each covering some unique and important ranges of compositional space, thus demonstrating the need for multi-instrument approaches to adequately characterize BB smoke emissions. Emission factors for overlapping compounds generally compared within experimental uncertainty, despite some outliers, including monoterpenes. Data from all measurements were synthesized into a single EF database that includes over 500 non-methane organic gases (NMOGs) to provide a comprehensive picture of speciated, gaseous BB emissions. The identified compounds were assessed as a function of volatility; 6–11 % of the total NMOG EF was associated with intermediate-volatility organic compounds (IVOCs). These atmospherically relevant compounds historically have been unresolved in BB smoke measurements and thus are largely missing from emission inventories. Additionally, the identified compounds were screened for published secondary organic aerosol (SOA) yields. Of the total reactive carbon (defined as EF scaled by the OH rate constant and carbon number of each compound) in the BB emissions, 55–77 % was associated with compounds for which SOA yields are unknown or understudied. The best candidates for future smog chamber experiments were identified based on the relative abundance and ubiquity of the understudied compounds, and they included furfural, 2-methyl furan, 2-furan methanol, and 1,3-cyclopentadiene. Laboratory study of these compounds will facilitate future modeling efforts.

scholarly journals Multi-instrument comparison and compilation of non-methane organic gas emissions from biomass burning and implications for smoke-derived secondary organic aerosol precursors

2016 ◽  
Author(s):  
Lindsay E. Hatch ◽  
Robert J. Yokelson ◽  
Chelsea E. Stockwell ◽  
Patrick R. Veres ◽  
Isobel J. Simpson ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Biomass Burning ◽  
Secondary Organic Aerosol ◽  
Carbon Number ◽  
Time Of Flight ◽  
Organic Aerosol ◽  
Emission Factors ◽  
Gas Chromatography Mass Spectrometry ◽  
Flight Mass Spectrometry

Abstract. Multiple trace-gas instruments were deployed during the fourth Fire Lab at Missoula Experiment (FLAME-4), including the first application of proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOFMS) and comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry (GC×GC-TOFMS) for laboratory biomass burning (BB) measurements. Open-path Fourier-transform infrared spectroscopy (OP-FTIR) was also deployed, as well as whole air sampling (WAS) with one-dimensional gas chromatography-mass spectrometry (GC-MS) analysis. This combination of instruments provided an unprecedented level of detection and chemical speciation. The chemical composition and emission factors (EFs) determined by these four analytical techniques were compared for four representative fuels. The results demonstrate that the instruments are highly complementary, with each covering some unique and important ranges of compositional space, thus demonstrating the need for multi-instrument approaches to adequately characterize BB smoke emissions. Emission factors for overlapping compounds generally compared within experimental uncertainty, despite some outliers, including monoterpenes. Data from all measurements were synthesized into a single EF database that includes over 500 non-methane organic gases (NMOGs) to provide a comprehensive picture of speciated, gaseous BB emissions. The identified compounds were assessed as a function of volatility; 6–11 % of the total NMOG EF was associated with intermediate volatility organic compounds (IVOCs). These atmospherically relevant compounds historically have been unresolved in BB smoke measurements and thus are largely missing from emissions inventories. Additionally, the identified compounds were screened for published secondary organic aerosol (SOA) yields. Of the total reactive carbon (defined as EF scaled by the OH rate constant and carbon number of each compound) in the BB emissions, 55–77 % was associated with compounds for which SOA yields are unknown or understudied. The best candidates for future smog chamber experiments were identified based on the relative abundance and ubiquity of the understudied compounds, and included furfural, 2-methyl furan, 2-furan methanol, and 1,3-cyclopentadiene. Laboratory study of these compounds will facilitate future modeling efforts.

Characterization of hafting adhesives using comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry

2018 ◽  
Vol 1 (11) ◽  
pp. 726-737 ◽  
Author(s):  
Katelynn A. Perrault ◽  
Lena M. Dubois ◽  
Dries Cnuts ◽  
Veerle Rots ◽  
Jean-François Focant ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Time Of Flight ◽  
Two Dimensional ◽  
Flight Mass Spectrometry

Characterization of aromatic steroids and hopanoids in marine and lacustrine crude oils using comprehensive two dimensional gas chromatography coupled to time-of-flight mass spectrometry (GCxGC-TOFMS)

2012 ◽  
Vol 53 ◽  
pp. 131-136 ◽  
Author(s):  
Cristiane R. Oliveira ◽  
Cleverson J.F. Oliveira ◽  
Alexandre A. Ferreira ◽  
Débora A. Azevedo ◽  
Francisco R. Aquino Neto
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Time Of Flight ◽  
Crude Oils ◽  
Two Dimensional ◽  
Flight Mass Spectrometry
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