Study of quantitative analysis of traces in low-conductivity samples using capillary electrophoresis with electrokinetic injection.
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.
Gáspár
Attila
A
Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 21, H-4010 Debrecen, Hungary. gaspara@tigris.klte.hu
Gábor
Lilla
L
D002138:Calibration; D004553:Electric Conductivity; D019075:Electrophoresis, Capillary / Q000379:methods*; D017022:Flow Injection Analysis; D007287:Inorganic Chemicals / Q000032:analysis; D014466:Ultraviolet Rays
D007287:Inorganic Chemicals