title: Study of quantitative analysis of traces in low-conductivity samples using capillary electrophoresis with electrokinetic injection.
abstract: In this work we tried to clarify the relation between the signal detected by indirect UV mode and the concentration of the analyte introduced by electrokinetic (EK) injection from samples having small but different conductivities. A simple external calibration procedure was proposed for quantitative determination of traces that are present in low-conductivity samples. It was found that measuring the current through the capillary filled with the samples provides useful correction factor for the external calibration.
authors.affiliation: Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, H-4010 Debrecen, Hungary. gaspara@tigris.klte.hu
authors.forename: Attila
authors.initials: A
authors.lastname: Gáspár
authors.forename: Lilla
authors.initials: L
authors.lastname: Gábor
mesh_terms: D002138:Calibration; D004553:Electric Conductivity; D019075:Electrophoresis, Capillary / Q000379:methods*; D017022:Flow Injection Analysis; D007287:Inorganic Chemicals / Q000032:analysis; D014466:Ultraviolet Rays
chemical_list: D007287:Inorganic Chemicals