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Construction of a carbon ionic liquid paste electrode based on multi-walled carbon nanotubes-synthesized Schiff base
Abbas Afkhami1, Hosein Khoshsafar1, Hasan Bagheri2
1Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran.
Abstract:
A simple, highly sensitive and selective carbon nanocomposite electrode has been developed for the electrochemical trace determination of cadmium. This sensor was designed by incorporation of multi-walled carbon nanotubes (MWCNTs) and a new synthesized Schiff base into the carbon paste ionic liquid electrode (CPE(IL)) which provides remarkably improved sensitivity and selectivity for the electrochemical stripping assay of Cd(II). The detection limit of the method was found to be 0.08 μg L(-1) (S/N=3) that is lower than the maximum contaminant level of Cd(II) allowed by the Environmental Protection Agency (EPA) in standard drinking waters. The proposed electrode exhibits good applicability for monitoring Cd(II) in various real samples.
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