Stacking from the Sample Stream in CZE Using a Pneumatically Driven Computerized Sampler
- 3 July 1998
- journal article
- research article
- Published by American Chemical Society (ACS) in Analytical Chemistry
- Vol. 70 (17) , 3695-3698
- https://doi.org/10.1021/ac9801115
Abstract
It is demonstrated that a pneumatically driven computerized sampling device for capillary electrophoresis facilitates sample stacking by the head-column field amplification (HCFA) technique. This device utilizes a rapid exchange between buffer and sample in a narrow channel at the separation capillary inlet and makes possible the combination of two classical injection modes [Formula: see text] the electrokinetic and hydrodynamic modes. Detection limits obtained were about 9 nM for alkylbenzylamine cations with common UV detection.Keywords
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