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CIEF of components following sequential injection of ampholytes and the sample zone offers unique advantages for analysis. The most important one of these is the efficient separation of amphoteric compounds having pIs outside the pH range of the ampholytes applied, but the resolution of the components can be increased by an adequate setup in the injection protocol. In this study, the effect of the...
Capillary isoelectric focusing in the presence of electroosmosis with sequential injection of carrier ampholytes and sample was found to be suitable for MS detection. The separate injection of the sample and the ampholytes provides good condition to suppress and overcome the undesirable effect of the presence of ampholytes in MS. By the appropriate selection of ampholyte solutions, whose pH range...
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