Twenty-fifth anniversary of the retention index system in gas—liquid chromatography

Hydrogen bonding: XXVII. Solvation parameters for functionally substituted aromatic compounds and heterocyclic compounds, from gas—liquid chromatographic data

Publisher Summary This chapter explains that many developments have taken place in the applications of gas–liquid chromatography to carbohydrates. The chapter discusses a classical paper on the application of trimethylsilyl derivatives of carbohydrates in gas–liquid chromatography. The discovery that these derivatives are readily formed and that they are volatile revolutionized the separation and analysis of carbohydrate mixtures. The chapter reviews the determination of carbohydrates in biological materials by gas–liquid chromatography and the use of this method in the analysis of plant materials. In examining the structure of a polysaccharide, it is convenient to consider the methods involved under the three main headings: (1) quantitative analysis, ( 2 ) methylation, and (3) periodate oxidation. Each of these aspects of polysaccharide chemistry may be aided by the application of gas–liquid chromatography, either qualitative or quantitative, or both. Thus, separations impossible by other techniques may often be achieved, and analytical data obtained in a fraction of the time demanded by other methods.

Applications of Gas-Liquid Chromatography to Carbohydrates :Part I°

Effect of cationic surfactant and block copolymer on carbon black particle surface charge and size

Thirtieth anniversary of the retention index according to Kováts in gas-liquid chromatography

For the study of relationships between retention behaviour and molecular structure in GLC and GSC the retention indices of alkenylbenzenes with 2–6 carbon atoms in a straight or branched side chain and of isotopological alkylbenzenes were determined on capillary columns coated with OV-1 and Ucon LB and on a micropacked column filled with graphitized thermal carbon black. From the values obtained index differences corresponding to the increments of the double bond in the side chain were derived. These differences depend significantly on the structure of the side chain and of the position of the double bond.

Structure-retention correlations of hydrocarbons in GLC and GSC alkenylbenzenes

Structure—retention correlations of alkylphenols in gas—liquid and gas—liquid chromatography

The influence of temperature on the polarity of stationary phases used in gas-liquid chromatography

Diatomaceous earth type supports are modified with a liquid phase, by high-temperature thermal treatment in a closed system. It is shown that the retention characteristics of the support changes by this treatment. The main advantage of this method, as compared with modification in a flow-through system is that liquid phase evaporation and possibility of oxydation during the process can be avoided. This ensures a better uniformity of the modified support.

N. Petsev

Papers

Structure-retention correlations of hydrocarbons in GLC and GSC alkenylbenzenes

Structure—retention correlations of alkylphenols in gas—liquid and gas—liquid chromatography

The influence of temperature on the polarity of stationary phases used in gas-liquid chromatography

Modification of supports with liquid phases by thermal treatment in a closed system

Plasma-modified thermal carbon black as a packing material for gas chromatography