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An original electrophoresis apparatus for simultaneous rapid determination of cations and anions has been designed and tested. The separation part of the apparatus consists of two identical fused-silica capillaries, each with a length of 10.5cm and inner diameter of 25μm. The injection space is formed by the crossing of four channels in a plexiglass cross-piece. The capillaries pass through two opposing...
Electrokinetic sample injection using two piezoelectric micropumps has been proposed for electrophoresis in short capillaries. The sample is brought to the injection end of the capillary using one of them. Then, the high‐voltage source is turned on and the sample is injected electrokinetically for a defined time. The injection is terminated by removal of the sample zone by the flowing separation electrolyte...
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