Journal ArticleDOI
Gas‐chromatographische Charakterisierung organischer Verbindungen. Teil 1: Retentionsindices aliphatischer Halogenide, Alkohole, Aldehyde und Ketone
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TLDR
In this article, a simple relation exists between the retention index of a compound on a non-polar stationary phase and its boiling point, which is defined as the ratio of the boiling point of the compound to its retention index.Abstract:
For the characterization of organic substances in gas chromatography a number termed «retention index» is proposed. A simple relation exists between the retention index of a compound on a non-polar stationary phase and its boiling point.read more
Citations
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Chemical Composition, and Antibacterial (against Staphylococcus aureus) and Free-Radical-Scavenging Activities of the Essential Oil of Scrophularia amplexicaulis Benth.
TL;DR: In this paper, the chemical composition of the essential oil obtained from the aerial parts of Scrophularia amplexicaulis Benth was analyzed, for the first time, by the GC-MS and gas chromatography/flame ionization detection (GC-FID).
Journal ArticleDOI
The use of GC×GC/TOF MS with multivariate analysis for the characterization of foodborne pathogen bacteria profiles.
J. Yvette Gardner,Darcy E. Brillhart,Melissa M. Benjamin,Lurlene G. Dixon,LaTonya M. Mitchell,Jean-Marie D. Dimandja,Jean-Marie D. Dimandja +6 more
TL;DR: The cellular fatty acid profiles of eight strains of Bacillus, Staphylococcus, and Enterobacteriacae (Escherichia coli and Salmonella) were analyzed by comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry.
Journal ArticleDOI
Plant-mediated interactions between shoot-feeding aphids and root-feeding nematodes depend on nitrate fertilization
TL;DR: Primary metabolite profiles differed only marginally between roots of both fertilization treatments in plants with and without aphids, indicating that nematodes may respond to these or other metabolic modifications, which are caused by minute environmental changes, in a sensitive way.
Journal ArticleDOI
Comprehensive two dimensional gas chromatography with fast-quadrupole mass spectrometry detector analysis of polar compounds extracted from the bio-oil from the pyrolysis of sawdust
Jaderson K. Schneider,Michele Espinosa da Cunha,Anaí L. dos Santos,Gabriela Pereira da Silva Maciel,Marcia Campos Brasil,Andrea De Rezende Pinho,Fabio Leal Mendes,Rosângela Assis Jacques,Elina Bastos Caramão +8 more
TL;DR: The most polar fractions of bio-oil produced by fast pyrolysis of Lignocel BK40-90 (sawdust from forest timber) are studied to conclude that this extract is rich in important raw materials for the chemical industry and can be used for this end.
Journal ArticleDOI
A workflow for the metabolomic/metabonomic investigation of exhaled breath using thermal desorption GC–MS
TL;DR: This methodology enables the creation of a 'breath matrix' that is based on a combination of retention indexing and the mass spectral registration of isolated peaks, and facilitated more efficient data modeling and a case study from a 22-participant stress-intervention experiment.
References
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Journal ArticleDOI
Gas-liquid partition chromatography: the separation and micro-estimation of volatile fatty acids from formic acid to dodecanoic acid
A. T. James,A. J. P. Martin +1 more
TL;DR: Modifications necessary to the theory of Martin & Synge (1941) to allow for the compressibility of the mobile phase are presented and the application of the gas-liquid partition chromatogram to the separation of volatile fatty acids is described.
Journal ArticleDOI
A new form of chromatogram employing two liquid phases: A theory of chromatography. 2. Application to the micro-determination of the higher monoamino-acids in proteins.
A. J. P. Martin,R. L. M. Synge +1 more
Journal ArticleDOI
Gas-liquid partition chromatography: the separation of volatile aliphatic amines and of the homologues of pyridine.
TL;DR: Analysis of the volatile amines present in Chenopodium vulvaria L. shows the presence of only ammonia and trimethylamine, compared with standard mixture ofmono-, di and tri-methylamines, which indicates a low concentration of ammonia in the plant.
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