title: Construction of a carbon ionic liquid paste electrode based on multi-walled carbon nanotubes-synthesized Schiff base composite for trace electrochemical detection of cadmium.
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.
authors.affiliation: Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran. Electronic address: afkhami@basu.ac.ir.
authors.forename: Abbas
authors.initials: A
authors.lastname: Afkhami
authors.affiliation: Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran.
authors.forename: Hosein
authors.initials: H
authors.lastname: Khoshsafar
authors.affiliation: Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
authors.forename: Hasan
authors.initials: H
authors.lastname: Bagheri
authors.affiliation: Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran.
authors.forename: Tayyebeh
authors.initials: T
authors.lastname: Madrakian
mesh_terms: D001681:Biological Assay / Q000295:instrumentation; D002104:Cadmium / Q000032:analysis*; D003217:Conductometry / Q000295:instrumentation*; D004553:Electric Conductivity; D004563:Electrochemistry / Q000295:instrumentation; D004784:Environmental Monitoring / Q000295:instrumentation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006197:Hair / Q000737:chemistry*; D006801:Humans; D052578:Ionic Liquids / Q000737:chemistry*; D008832:Microchemistry / Q000295:instrumentation*; D008839:Microelectrodes; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D009824:Ointments; D012545:Schiff Bases / Q000737:chemistry
chemical_list: D052578:Ionic Liquids; D037742:Nanotubes, Carbon; D009824:Ointments; D012545:Schiff Bases; D002104:Cadmium
keywords: Anodic stripping voltammetery; Cadmium determination; Ionic liquid; Modified carbon paste electrode; Multi-walled carbon nanotubes