In Situ Study of Soot from the Combustion of a Biomass Pyrolysis Intermediate—Eugenol—and n-Decane Using Aerosol Time of Flight Mass Spectrometry

2010 ◽  
Vol 24 (1) ◽  
pp. 439-445 ◽  
Author(s):  
M. Teresa Baeza-Romero ◽  
Jacqueline M. Wilson ◽  
Emma M. Fitzpatrick ◽  
Jenny M. Jones ◽  
Alan Williams
Keyword(s):  
Mass Spectrometry ◽  
Time Of Flight ◽  
Biomass Pyrolysis ◽  
In Situ Study ◽  
Flight Mass Spectrometry

scholarly journals Untangling the Formation Mechanisms of Biorelevant Molecules in the ISM with Photoionization Reflectron Time-of-Flight Mass Spectrometry

2015 ◽  
Vol 11 (A29A) ◽  
pp. 305-306
Author(s):  
Marko Förstel ◽  
Ralf I. Kaiser
Keyword(s):  
Mass Spectrometry ◽  
Single Photon ◽  
Time Of Flight ◽  
Formation Mechanisms ◽  
Flight Mass Spectrometry ◽  
On Line ◽  
Temperature Programmed ◽  
In Situ Infrared Spectroscopy ◽  
Complex Organic

AbstractExploiting reflectron time of flight mass spectrometry coupled with single photon ionization of the subliming molecules (PI-ReTOF-MS) during the temperature programmed desorption (TPD) and combining these data with on line and in situ infrared spectroscopy (FTIR), a versatile experimental approach has been established to elucidate the formation pathways of complex organic molecules in interstellar analog ices upon interaction with ionizing radiation at astrophysically relevant temperatures as low as 5 K.

A versatile instrument for in situ combination of scanning probe microscopy and time-of-flight mass spectrometry

2005 ◽  
Vol 76 (10) ◽  
pp. 103701 ◽  
Author(s):  
A. Wetzel ◽  
A. Socoliuc ◽  
E. Meyer ◽  
R. Bennewitz ◽  
E. Gnecco ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Scanning Probe Microscopy ◽  
Time Of Flight ◽  
Scanning Probe ◽  
Probe Microscopy ◽  
Flight Mass Spectrometry

Co-pyrolysis behaviors of low-rank coal and polystyrene with in-situ pyrolysis time-of-flight mass spectrometry

Fuel ◽  
2021 ◽  
Vol 286 ◽  
pp. 119461
Author(s):  
Yunfei Wu ◽  
Jialong Zhu ◽  
Shun Zhao ◽  
Dechao Wang ◽  
Lijun Jin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Time Of Flight ◽  
Low Rank ◽  
Low Rank Coal ◽  
Flight Mass Spectrometry

scholarly journals Gas Chromatography Coupled to High Resolution Time-of-Flight Mass Spectrometry as a High-Throughput Tool for Characterizing Geochemical Biomarkers in Sediments

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Hector Henrique Ferreira Koolen ◽  
Clécio Fernando Klitzke ◽  
Joe Binkley ◽  
Jeffrey Patrick ◽  
Ana Cecília Rizatti de Albergaria-Barbosa ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Gas Chromatography ◽  
High Resolution ◽  
Time Of Flight ◽  
Resolution Time ◽  
Flight Mass Spectrometry ◽  
In Situ Derivatization

The performance of gas chromatography coupled to high-resolution time-of-flight mass spectrometry (GC-HRTofMS) for characterizing geochemical biomarkers from sediment samples was evaluated. Two approaches to obtain the geochemical biomarkers were tested: (1) extraction with organic solvent and subsequent derivatization and (2) in-situ derivatization thermal desorption. Results demonstrated that both approaches can be conveniently applied for simultaneous characterization of many geochemical biomarkers (alkanes, alkanols, sterols, and fatty acids), avoiding conventional time-consuming purification procedures. GC-HRTofMS reduces both sample preparation time and the number of chromatographic runs compared to traditional methodologies used in organic geochemistry. Particularly, the approach based on in-situ derivatization thermal desorption represents a very simple method that can be performed in-line employing few milligrams of sediment, eliminating the need for any sample preparation and solvent use. The high resolving power (m/Δm50% 25,000) and high mass accuracy (error ≤ 1 ppm) offered by the “zig-zag” time-of-flight analyzer were indispensable to resolve the complexity of the total ion chromatograms, representing a high-throughput tool. Extracted ion chromatograms using exact m/z were useful to eliminate many isobaric interferences and to increase significantly the signal to noise ratio. Characteristic fragment ions allowed the identification of homologous series, such as alkanes, alkanols, fatty acids, and sterols. Polycyclic aromatic hydrocarbons were also identified in the samples by their molecular ions. The characterization of geochemical biomarkers along a sedimentary core collected in the area of Valo Grande Channel (Cananéia-Iguape Estuarine-Lagunar System (São Paulo, Brazil)) provided evidences of environmental changes. Sediments deposited before opening of channel showed dominance of biomarkers from mangrove vegetation, whereas sediments of the pos-opening period showed an increase of biomarkers from aquatic macrophyte (an invasive vegetation).

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