title: Stacking from the Sample Stream in CZE Using a Pneumatically Driven Computerized Sampler.
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.
authors.affiliation: Department of Chemistry, Tallinn Technical University, Ehitajate tee 5, Tallinn EE0026, Estonia.
authors.forename: R
authors.initials: R
authors.lastname: Kuldvee
authors.forename: M
authors.initials: M
authors.lastname: Kaljurand