Q. Hu et al., Determination of idarubicin in human urine by capillary zone electrophoresis with amperometric detection, FRESEN J AN, 368(8), 2000, pp. 844-847
A simple, reliable and reproducible method, based on capillary zone electro
phoresis with amperometric detection, has been developed for the determinat
ion of idarubicin in human urine. A carbon disk electrode was used as worki
ng electrode. The optimal conditions of separation and detection were pH 5.
6 phosphate buffer (0.20 mol/L), 22 kV for the separation voltage and 1.00
V (vs. Ag/AgCl, 3 mol/L KCl) for the detection potential. The linear range
was from 4.0 x 10(-7) to 2.0 x 10(-5) mol/L with a regression coefficient o
f 0.9986, and the detection limit was 8.0 x 10(-8) mol/L. The method was di
rectly applied to the determination of idarubicin in spiked human urine wit
hout any other sample pretreatment except filtration, and the assay results
were satisfactory.