Comprehensive Two-Dimensional Gas Chromatography - Mass Spectrometry and its Use in High-Resolution Metabolomics

Shellie, Robert A.

doi:10.1071/ch05065

Cited by 7 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, other more selective but nonspectroscopic GC detection methods such as thermionic detection, electron capture, or chemiluminescence may suffer either in sensitivity and/or acquisition speed; nonetheless, they have been successfully applied in combination with GC × GC . It is known that for some applications the high chromatographic separation power of GC × GC reduces the need for selective detection systems, but the analysis of extremely complex samples such as petrochemical fractions, − ambient aerosols, − forensic, − or metabolic samples − remains challenging, even with the high separation power of GC × GC. This is in particular true regarding the identification of unknown compounds in nontargeted analytical approaches if the differentiation of isomeric compounds or compounds with similar separation and mass spectrometric properties (e.g., cycloalkanes and alkenes) has to be addressed.…”

mentioning

confidence: 99%

A Vacuum Ultraviolet Absorption Array Spectrometer as a Selective Detector for Comprehensive Two-Dimensional Gas Chromatography: Concept and First Results

et al. 2016

View full text Add to dashboard Cite

Fast and selective detectors are very interesting for comprehensive two-dimensional gas chromatography (GC × GC). This is particularly true if the detector system can provide additional spectroscopic information on the compound structure and/or functionality. Other than mass spectrometry (MS), only optical spectroscopic detectors are able to provide selective spectral information. However, until present the application of optical spectroscopy technologies as universal detectors for GC × GC has been restricted mainly due to physical limitations such as insufficient acquisition speed or high detection limits. A recently developed simultaneous-detection spectrometer working in the vacuum ultraviolet (VUV) region of 125-240 nm overcomes these limitations and meets all the criteria of a universal detector for GC × GC. Peak shape and chromatographic resolution is preserved and unique spectral information, complementary to mass spectrometry data, is gained. The power of this detector is quickly recognized as it has the ability to discriminate between isomeric compounds or difficult to separate structurally related isobaric species; thus, it provides additional selectivity. A further promising feature of this detector is the data analysis concept of spectral filtering, which is accomplished by targeting special electronic transitions that allows for a fast screening of GC × GC chromatograms for designated compound classes.

show abstract

mentioning

confidence: 99%

A Vacuum Ultraviolet Absorption Array Spectrometer as a Selective Detector for Comprehensive Two-Dimensional Gas Chromatography: Concept and First Results

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Single dimension methods however, often provide discriminating capability that is too limiting. An emerging technology, comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC×GC/TOF-MS), brings increased separation capacity, chemical selectivity and sensitivity for metabolomics analyses [10,11]. Compared with conventional onedimensional GC, two-dimensional gas chromatography offers significant advantages for analysis of complex samples: an order-of-magnitude increase in separation capacity (discrimination of over one thousand peaks), significant increase in signal-to-noise ratio and dynamic range, and improvement of mass spectral deconvolution and similarity matches.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry peak sorting algorithm

Huang

Regnier

et al. 2008

Journal of Chromatography A

View full text Add to dashboard Cite

We report a novel peak sorting method for the two-dimensional gas chromatography/time-of-flight mass spectrometry (GC×GC/TOF-MS) system. The objective of peak sorting is to recognize peaks from the same metabolite occurring in different samples from thousands of peaks detected in the analytical procedure. The developed algorithm is based on the fact that the chromatographic peaks for a given analyte have similar retention times in all of the chromatograms. Raw instrument data are first processed by ChromaTOF (Leco) software to provide the peak tables. Our algorithm achieves peak sorting by utilizing the first and second dimension retention times in the peak tables and the mass spectra generated during the process of electron impact ionization. The algorithm searches the peak tables for the peaks generated by the same type of metabolite using several search criteria. Our software also includes options to eliminate non-target peaks from the sorting results, e.g., peaks of contaminants. The developed software package has been tested using a mixture of standard metabolites and another mixture of standard metabolites spiked into human serum. Manual validation demonstrates high accuracy of peak sorting with this algorithm.

show abstract

“…metabolic fingerprinting, GC-TOF) [21,24,[29][30][31][60][61][62][63][64][65][66][67][68][69][70][71][72]. The first report on application of this technology for metabolic profiling in plants was presented by Sauter et al [73] and later extended to the simultaneous determination of large number of metabolites in a range of plant species [25,48,74,75].…”

Section: Gc-ms In Metabolome Analysismentioning

confidence: 99%

Simplified absolute metabolite quantification by gas chromatography–isotope dilution mass spectrometry on the basis of commercially available source material

Vielhauer

Zakhartsev

Horn

et al. 2011

Journal of Chromatography B

View full text Add to dashboard Cite

Comprehensive Two-Dimensional Gas Chromatography - Mass Spectrometry and its Use in High-Resolution Metabolomics

Cited by 7 publications

References 6 publications

A Vacuum Ultraviolet Absorption Array Spectrometer as a Selective Detector for Comprehensive Two-Dimensional Gas Chromatography: Concept and First Results

A Vacuum Ultraviolet Absorption Array Spectrometer as a Selective Detector for Comprehensive Two-Dimensional Gas Chromatography: Concept and First Results

Comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry peak sorting algorithm

Simplified absolute metabolite quantification by gas chromatography–isotope dilution mass spectrometry on the basis of commercially available source material

Contact Info

Product

Resources

About