Separation and quantification of lanthanides in synthetic standards by capillary electrophoresis: a new experimental evidence of the systematic "odd-even" pattern observed in sensitivities and detection limits.

摘要: Abstract The systematic zigzag pattern of sensitivities and detection limits (LODs) lanthanides, previously observed in mass spectrometric chromatographic measurements, was once more investigated through the indirect photometric with capillary electrophoresis. Well-designed chemometric experiments were performed for electrophoretic separation lanthanides using standards similar concentrations. A fused silica 355 mm × 75 μm used. Complete all 14 achieved ∼3 min at a temperature 15 °C. Indirect 214 nm voltage +25 kV hydrostatic injection (100 mm 20 s) background electrolyte used consisted an optimum mixture 0.004 M HIBA (as complexing agent) 0.010 M UVCat-1 UV-absorbing co-ion) pH 4.4. good reproducibility migration times (