On-line sample preconcentration on a packed-inlet capillary for improving the sensitivity of capillary electrophoretic analysis of pharmaceuticals
β Scribed by Michael E. Swartz; Michael Merion
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 103 KB
- Volume
- 632
- Category
- Article
- ISSN
- 1873-3778
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## Sensitivity enhancement by on-line preconcentration and in-capillary derivatization for the electrophoretic determination of amino acids This study describes an application of on-line preconcentration by large-volume stacking in combination with in-capillary derivatization for enhancing spectro
## Abstract We present a new system for the sensitive analysis of cephalosporins by CE using both onβline SPE and largeβvolume sample stacking (LVSS). Sample volumes of 250β ΞΌL were loaded onto the SPE microcolumn which was then desorbed with 426β nL of ACN. The SPE elution plug was injected into the