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It might be somewhat audacious To claim that some methods in GC×GC can be called nonclassical-with the relatively brief history GC×GC (about 15 years) one might argue that there has been insufficient time to establish a suite of classical methods. However, it is possible to describe a general approach to GC×GC that held a predominant position in the years up to the early 2000s. This brief review will introduce the GC×GC technique and its advantages, which primarily lie in the area of increased separation power for volatile chemical analysis. It will then outline some recent applications that are departures from the classically implemented method such as offering approaches to increasing the speed of analysis, the use of quite different operating conditions to achieve specific chromatographic goals, and the benefits and contrasting results that are obtained when ‘inverted’ column phase Arrangements are employed. [ABSTRACT FROM AUTHOR]

The article discusses a study which highlights the use of ligand-exchange chromatography technique for the analysis of carbohydrates using polymeric based columns. The study examines the development of peak efficiency temperature of glucose and fructose through a preheat device. The study also reveals the use of a pre-heat device for improvement of polymeric ligand-exchange.

The use of elevated temperatures is a common tool for the analysis of carbohydrates using ligand-exchange chromatography. Sample preheating can further enhance peak efficiency and improve the analysis of carbohydrates. [ABSTRACT FROM AUTHOR]

Presents the direct resolution of chiral amino acids, hydroxy acids and dipeptides. Suitability of chirex ligand exchange phase 3126 for separation of free amino acids and utility for direct resolution of alpha hydroxy acids and dipeptides; Basis of separation mechanism on the formation of a reversible diastereometric metal complex; Absence of chemical derivation for chiral separation on the ligand exchange column.

The article discusses methods for developing High-performance liquid chromatography (HPCL) for Bimolecular Analysis. Topics discussed include using columns onto which a protein A or G ligand is immobilized for determining the amount of protein in the reaction mixture, analyzing intact and partially fragmented proteins using reversed-phase chromatography (RPC) and using Size Exclusion Chromatography (SEC) for separating proteins, fragments, and aggregates.

The article evaluates a networking card introduced at the Fakuma show by Gammaflux L.P. of Sterling, Virginia, which allows users to link the company's ligand exchange chromatography controllers for the first time.