Cyclic Ion Mobility Spectrometry Coupled to High-Resolution Time-of-Flight Mass Spectrometry Equipped with Atmospheric Solid Analysis Probe for the Molecular Characterization of Combustion Particulate Matter

2020 ◽  
Vol 32 (1) ◽  
pp. 206-217
Author(s):  
Christopher P. Rüger ◽  
Johann Le Maître ◽  
Eleanor Riches ◽  
Martin Palmer ◽  
Jürgen Orasche ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Particulate Matter ◽  
High Resolution ◽  
Molecular Characterization ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Time Of Flight ◽  
Resolution Time ◽  
Flight Mass Spectrometry

Non-Targeted chemical characterization of a Marcellus shale gas well through GC  × GC with scripting algorithms and high-resolution time-of-flight mass spectrometry

Fuel ◽  
2018 ◽  
Vol 215 ◽  
pp. 363-369 ◽  
Author(s):  
Paulina K. Piotrowski ◽  
Benedikt A. Weggler ◽  
Erica Barth-Naftilan ◽  
Christina N. Kelly ◽  
Ralf Zimmermann ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Shale Gas ◽  
Marcellus Shale ◽  
Time Of Flight ◽  
Chemical Characterization ◽  
Resolution Time ◽  
Gas Well ◽  
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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