CONCENTRATION SYSTEM, SAMPLE STACK PRECONCENTRATION AND / OR PURIFICATION FOR ANALYSIS

摘要

The system (700) for treating molecules or particles of interest conveyed by a viscoelastic liquid comprises: - means (715) for laminar flow during at least a part, called the "concentration phase", of the duration operating system, viscoelastic liquid in a concentration device (705), preconcentration by stacking and / or purification, said device having a concentration zone (110, 160, 210, 525) having, in the direction of said flow, an inlet section surface greater than the exit section area; - means (725) for applying an electric field between the inlet and the outlet of the concentration zone during the concentration phase, the action of the electric field on the molecules or particles of interest being, in the concentration zone, opposite to the direction of said flow and causing the retention of molecules or particles of int at least in the concentration zone, an instrument (710) for the preparation of analysis and / or analysis of the molecules or particles of interest and - means (730) for transferring the concentrated sample from the zone concentration to the analytical preparation and / or analysis instrument.