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A combination of two online sample concentration techniques, large‐volume sample stacking with an electroosmotic flow pump (LVSEP) and field‐amplified sample injection (FASI), was investigated in CE to achieve highly sensitive oligosaccharide analysis. In CE with LVSEP‐FASI, analytes injected throughout the capillary were concentrated on the basis of LVSEP, followed by an electrokinetic introduction...
To realize the high-performance and simple-operation analysis of cationic compounds in capillary electrophoresis, we investigated large-volume sample stacking with an electroosmotic flow pump (LVSEP) using capillaries with hydrophilic and weakly cationic inner surface. Three capillary modification methods were employed: thermally passivated physical coating with polymer mixture of poly(vinyl alcohol)...
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