Please forward this error screen to 216. It is ultimately caused by the presence of a charged interface between the particle surface and quantitative chemical analysis 9th pdf surrounding fluid. It is the basis for a number of analytical techniques used in chemistry for separating molecules by size, charge, or binding affinity. Electrophoresis is a technique used in laboratories in order to separate macromolecules based on size.
The technique applies a negative charge so proteins move towards a positive charge. This is used for both DNA and RNA analysis. In this technique DNA foot-printing can identify how proteins bind to DNA. It can be used to separate proteins by size, density and purity.
It can also be used for plasmid analysis, which develops our understanding of bacteria becoming resistant to antibiotics. This part of the force is also called electrophoretic retardation force. It has limitations on its validity. However, Debye length must be important for electrophoresis, as follows immediately from the Figure on the right. The thicker the DL, the smaller the retardation force must be. This model of “thin double layer” offers tremendous simplifications not only for electrophoresis theory but for many other electrokinetic theories.
This model can be useful for some nanoparticles and non-polar fluids, where Debye length is much larger than in the usual cases. Dukhin number, pioneered by Overbeek. Sur un nouvel effet de l’électricité galvanique”. Contribution à la théorie de l’endosmose électrique et de quelques phénomènes corrélatifs”. Theory of electrophoresis — The relaxation effect”. Electrophoretic mobility of a spherical colloidal particle”. Model and verification of electrokinetic flow and transport in a micro-electrophoresis device”.