Results 31 to 40 of about 23,921,062 (292)

Specificity and selectivity improvement in doping analysis using comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry

Química Nova, 2012
Comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry was used for the identification of forty doping agents. The improvement in the specificity was remarkable, allowing the resolution of analytes that could not ...
Samantha S. Barbosa, Felipe D. Leal, Monica C. Padilha, Raphael S. F. Silva, Henrique Marcelo G. Pereira, Francisco R. Aquino Neto, Ademário I. da Silva Júnior   +6 more
doaj   +1 more source

Exploration of Extraction and Separation Techniques for Routine Trace Analysis of Organic Compounds in Water: Dispersive Liquid-Liquid Microextraction vs Liquid-Liquid Extraction

Journal of Chromatography Open, 2022
Dispersive liquid-liquid microextraction (DLLME) was compared to liquid-liquid extraction (LLE) in terms of the methods’ abilities to analyze samples and ultimately to provide information to an analyst.
Trevor A. Johnson, Michael D.S. Armstrong, A. Paulina de la Mata, James J. Harynuk   +3 more
doaj   +1 more source

Smith-Waterman peak alignment for comprehensive two-dimensional gas chromatography-mass spectrometry

BMC Bioinformatics, 2011
Background Comprehensive two-dimensional gas chromatography coupled with mass spectrometry (GC × GC-MS) is a powerful technique which has gained increasing attention over the last two decades.
Koo Imhoi, Kim Seongho, Fang Aiqin, Zhang Xiang   +3 more
doaj   +1 more source

Quantitative analysis of endocrine disruptors by comprehensive two-dimensional gas chromatography [PDF]

, 2015
Comprehensive two-dimensional gas chromatography has been successfully applied to the analysis of various organic contaminants; however, few studies report its use in the analysis of endocrine disrupting compounds.
Moreira, Miriany A., Cardeal, Zenilda L., Andre, Leiliane C., Ribeiro, Alexandra, Silva, Marco Diogo Richter Gomes da   +4 more
core   +2 more sources

Quantitative carbon distribution analysis of hydrocarbons, alcohols and carboxylic acids in a Fischer-Tropsch product from a Co/TiO2 catalyst during gas phase pilot plant operation

Journal of Analytical Science and Technology, 2020
Comprehensive two-dimensional gas chromatography (GCxGC) analysis for 1-alcohols and gas chromatography–mass spectrometry (GC-MS) analysis for carboxylic acids, derivatised as their methyl esters, have been applied to liquid and wax Fischer-Tropsch (FT ...
Roy Partington, Jay Clarkson, James Paterson, Kay Sullivan, Jon Wilson   +4 more
doaj   +1 more source

Volatile Metabolites in Lavage Fluid Are Correlated with Cytokine Production in a Valley Fever Murine Model

Journal of Fungi, 2023
Coccidioides immitis and Coccidioides posadasii are soil-dwelling fungi of arid regions in North and South America that are responsible for Valley fever (coccidioidomycosis). Forty percent of patients with Valley fever exhibit symptoms ranging from mild,
Emily A. Higgins Keppler, Marley C. Caballero Van Dyke, Heather L. Mead, Douglas F. Lake, D. Mitchell Magee, Bridget M. Barker, Heather D. Bean   +6 more
doaj   +1 more source

Restoration for Comprehensive Two-Dimensional Gas Chromatography [PDF]

2005 IEEE International Conference on Electro Information Technology, 2006
This paper develops an approach for restoration of data from comprehensive two-dimensional gas chromatography (GCtimesGC), a powerful new technology for chemical separations. GCtimesGC restoration is required to separate coeluting (i.e., overlapping) peaks. The GCtimesGC process is modeled as a two-dimensional linear, shift-variant system, based on the
null Jiazheng Shi, S.E. Reichenbach
openaire   +1 more source

A comprehensive urinary steroid analysis strategy using two-dimensional gas chromatography - time of flight mass spectrometry. [PDF]

, 2018
Steroids are key players in a high variety of physiological processes and are typically analyzed for the diagnosis of hormonal disorders. Due to their chemical and structural similarity many of these metabolites cannot be separated by conventional ...
Escher, Geneviève, Genevieve Escher, Michael Groessl, Bruno Vogt, Andrea Bileck, Grössl, Michael, Verouti, Sophia N, Vogt, Bruno, Sophia N. Verouti, Bileck, Andrea, Groessl M, Verouti SN, Vogt B, Bileck A, Escher G   +14 more
core   +1 more source

Region of interest selection for GC×GC–MS data using a pseudo fisher ratio moving window with connected components segmentation

Journal of Chromatography Open, 2023
Comprehensive two-dimensional gas chromatography mass spectrometry (GC×GC–MS) data present several challenges for analysis largely because chemical factors drift along the chromatographic modes across different chromatographic runs, and there is ...
Ryland T. Giebelhaus, A. Paulina de la Mata, James J. Harynuk   +2 more
doaj   +1 more source

Evaluation of ionic liquid stationary phases for one dimensional gas chromatography-mass spectrometry and comprehensive two dimensional gas chromatographic analyses of fatty acids in marine biota

, 2011
Evaluation of ionic liquid stationary phases for one dimensional gas chromatography-mass spectrometry and comprehensive two dimensional gas chromatographic analyses of fatty acids in marine biotaIonic liquid stationary phases were tested for one ...
Sandra, Pat, Frank David, Wim Vyverman, Guowang Xu, Vyverman, Wim, Pat Sandra, Qun, Gu, Klaus Rumpel, Frédéric Lynen, Pieter Vanormelingen, Rumpel, Klaus, Gu, Qun, SandraPat, Sandra, Patrick, Vanormelingen, Pieter, David, Frank, Lynen, Frederic, Xu, Guowang, Qun Gu   +18 more
core   +1 more source