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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Journal ArticleDOI
Comparison of Bentone and liquid-crystal stationary phases for the gas chromatographic separation of isomers
F. Vernon,A.N. Khakoo +1 more
Journal ArticleDOI
Use of Kernel Orthogonal Projection to Latent Structure in Modeling of Retention Indices of Pesticides
TL;DR: In this paper, the gas chromatography retention indices of 168 pesticides were used to construct a robust quantitative structure-retention relationship (QSRR) model, and the remaining compounds were subjected to two different modeling strategies: stepwise multiple linear regression (stepwise-MLR) and kernel orthogonal projection to latent structure (KOPLS).
Journal ArticleDOI
Hold-up time in gas chromatography. V. Dependence of the retention of n-alkanes on the chromatographic variables in isothermal gas chromatography.
TL;DR: In this article, a regression analysis showed that three of the parameters of the equation depend on different chromatographic variables such as hold-up time, average linear gas velocity, volume and polarity of the stationary phase and temperature of the column.
Journal ArticleDOI
Evaluation of Dead Time Calculation in Reversed‐Phase Liquid Chromatography Using a Multiparametric Mathematical Method
TL;DR: In this paper, the validity of a multiparametric non-linear least-squares regression iterative method for the determination of the column dead time tM and the regression parameter (slope b), based on the use of alkan-2-ones, alkyl aryl ketones, and 1-nitroalkanes has been evaluated.
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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