Construction of a carbon ionic liquid paste electrode based on multi-walled carbon nanotubes-synthesized Schiff base composite for trace electrochemical detection of cadmium

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• 作者：Abbas Afkhami ; Hosein Khoshsafar ; Hasan Bagheri ; Tayyebeh Madrakian
• 关键词：Modified carbon paste electrode ; Cadmium determination ; Multi-walled carbon nanotubes ; Ionic liquid ; Anodic stripping voltammetery
• 刊名：Materials Science and Engineering: C
• 出版年：1 February, 2014
• 年：2014
• 卷：35
• 期：Complete
• 页码：8-14
• 全文大小：644 K

文摘

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 渭g L^鈭?#xA0;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.