S H Hansen I Bjornsdottir and J Tjornelund

Royal Danish School of Pharmacy, Copenhagen,


Copyright © 2000 Academic Press

Electrophoresis is a separation technique that is normally performed in an aqueous environment. This is due to the fact that the separation mechanism is based on the difference in migration rate of charged species in an electric field. Species (ions/molecules or particles) with a difference in their charge over size ratio will exhibit a difference in migration rate. Most charged species are fairly soluble in aqueous media and thus water is the most obvious solvent for elec-trophoresis. However, in a number of nonaqueous solvent systems, it is possible to obtain sufficient conductivity to perform electrophoresis. If such systems are utilized with the technique of capillary elec-trophoresis, a number of advantages compared to aqueous systems are obtained in the separation of small molecules. Nonaqueous electrophoresis of biopolymers like polysaccharides, nucleic acids and proteins is not of practical use due to lack of solubility of such molecules in organic solvents.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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