One of the major challenges in capillary electrophoresis and other miniaturization separation techniques is to maintain high detection sensitivity in the increasingly smaller dimension. Numerous on-column sample preconcentrating procedures, based either on electrokinetic focusing or chromatographic effects, have been developed. This review will discuss some practical approaches to sample stacking from a personal perspective. Several recent developments in sample stacking on microfluidic devices are reviewed.
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Ring‐Ling Chien (2003) studied this question.
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