Electrochemically grafted etodolac film on glassy carbon for Pb(II) determination
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Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study reports the electrochemical modification of glassy carbon (GC) surface with etodolac (ETO), the characterization of this ETO modified glassy carbon (ETO/GC) electrode and its electroanalytical application for the determination of Pb(II) ions. Binding type of the etodolac with the glassy carbon surface was investigated and found that it was through the etheric linkage revealed from the reflection-absorption infrared spectroscopy (RAIRS). The ETO/GC electrode was characterized by cyclic voltammetry (CV), reflection-adsorption IR spectroscopy, electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The ETO/GC electrode was found to be suitable for selective determination of Pb(II) by adsorptive stripping voltammetry in the solutions of the mixture of heavy metal ions, such as Cu(II) and Cd(II) and showed high stability and reproducibility. The stability and the potential range of the ETO/GC electrode were also studied. The developed method was validated according to the ICH guideline and found to be linear, sensitive, selective, precise and accurate. The linearity range of Pb(II) was 5.0 x 10(-10) to 1.0 x 10(-8) M with the detection limit (S/N = 3) of 1.67 x 10(-10) M. The validated method was applied successfully for the determination of Pb(II) in real samples. (c) 2012 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Etodolac, Characterization, Glassy carbon electrode, Electrochemical sensor, Pb(II) ion detection, Adsorptive stripping voltammetry
Kaynak
Sensors and Actuators B-Chemical
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
171
