Determination of iron and copper ions in cognacs by capillary electrophoresis

作者：Popova O V^*; Sursyakova V V; Burmakina G V; Rubaylo A I

来源：Journal of Analytical Chemistry, 2015, 70(2): 198-202.

DOI：10.1134/S1061934814120120

• capillary electrophoresis
• diode array detector
• background electrolyte
• EDTA
• iron
• copper
• cognac

A method is developed for the determination of iron(III) and copper(II) in cognacs by capillary electrophoresis (CE) with diode array detection with limits of detection 0.06 and 0.6 mg/L, respectively. Foreign substances present in cognac do not interfere with the determination. The accuracy of the results of analysis was confirmed by the added-found method. The method was applied to the analysis of seven cognac samples. The data obtained by CE are in a good agreement with the results of inductively coupled plasma mass spectrometry.

• 出版日期2015-2