WE have found that, when a mixture containing barbiturate, salicylate and acetophenetidin is subjected to chromatography on Whatman No. DE20 cellulosic ion-exchange paper in dilute ammonia solution, a ...

ONE of the difficulties encountered in investigating the metabolism and distribution of catecholamines has been the inadequate separation and isolation of these substances from tissue extracts 1.

When the components in the mixture of solutions are moved forward in the mobile phase by the material moving the sample, these components pass through the stationary phase. The difference in size and ...

Chromatography is used to separate the given components of a mixture that have differing solubilities in a solvent. It can be used to separate coloured substances in a mixture, like the inks in this ...

Postnova Analytics have published an informative new white paper that details how multi-detector Asymmetrical Field Flow Fractionation (AF4) and Electrical AF4 (EAF4) techniques are transforming the ...

Separation of molecules is performed using Size Exclusion Chromatography (SEC), which separates molecules based on size as they pass through a porous resin. Widely used for both preparative and ...

Various chemical analysis techniques can be used to help identify the chemicals present in reaction mixtures or give important information about the products of a chemical reaction. Chromatography is ...

The roots of chromatography can be traced back to the early 20th century when Mikhail Tswett introduced the concept of liquid-phase chromatography. Over the years, chromatography techniques have ...