Chromatography and Electrophoresis

Electrophilic addition of bromine to acetylene (ethyne)

Principle
When bromine reacts with ethine (acetylene), the first step is the production of trans-1,2-dibromoethene. When more bromine is added, this reacts to form 1,1,2,2-tetrabromoethane. As a by-product of this reaction, cis

Separation of inorganic anions by TLC

Principle

Despite its high separat ...

Gas chromatography

Principle

This educationally vivid complete experimental set-up of a gas chromatograph makes it possible to separate substances which are highly volatile at up to 100°C. A butane mixture is a suitable choice here, for example.
System components include such elem ...

Chromatographic separation processes: gas chromatography(with the Cobra3 Basic-Unit)

Principle:

Chromatographic procedures allow a separation of substance mixtures with the aid of a stationary separation phase and a mobile phase. In gas chromatography the mobile phase is a gas. The mobile phase, to which the mixture to be separated is added, transports ...

Chromatographic separation processes: gas chromatography (with the Cobra3 Chem-Unit)

Principle

Chromatographic procedures allow a separation of substance mixtures with the aid of a stationary separation phase and a mobile phase. In gas chromatography the mobile phase is a gas. The mobile phase, to which the mixture to be separated is added, transports the sub ...

Electrophoretic mobility

Principle

Electrophores is is a standard method in modern biochemistry. It enables molecules that ionize to be isolated and identified by means of the differences in their migration rates in an electric field which results from their particular charges and masses. The method ...