MULTIFUNCTIONAL ISOTOPIC MEASUREMENT BY DIRECT COUPLING OF A MULTI-CYCLE ISOTACHOPHORESIS TECHNIQUE AND A MASS SPECTROMETRY TECHNIQUE.

摘要

The invention relates to a method of separating electrically charged species (A, B, C) contained in a solution (S) by an isotachophoresis method applied in an electrophoresis device, the isotachophoresis method being coupled to a isotopic measurement using a mass spectrometer (ICP-MS). The method notably comprises a step of stopping the electrical voltage applied to the terminal of the electrophoresis capillary and the transient application of a back pressure allowing the use of the capillary length several times and artificially lengthening the distance of the capillary. separation.