A Comparative Study of Cadmium Ion-Selective Electrodes with Solid and Liquid Inner Contact

作者：Wardak Cecylia^*

来源：Electroanalysis, 2012, 24(1): 85-90.

DOI：10.1002/elan.201100362

• Cadmium ion-selective electrode
• Ionic liquid
• Solid contact
• Potentiometry

A comparative study was performed between three types of cadmium ion selective electrodes: solid contact electrode containing membrane doped with ionic liquid: 1-alkyl-3-methylimidazolium chloride, solid contact electrode containing membrane doped with traditional lipophilic additive potassium tetrakis (p-chlorophenyl) borate (KTpClB) and the classical cadmium-ion selective electrode with internal filling solution. The basic analytical parameters of the studied electrodes, such as the slope characteristic, the detection limit, response time, lifetime, selectivity coefficients against lead, nickel, cobalt, zinc, magnesium, strontium, calcium, potassium and sodium ions as well as the dependence of the electrode potential on pH were determined. The best results were obtained for an electrode with solid contact based on ionic liquid 1-ethyl-3-methylimidazolium chloride.

• 出版日期2012-1