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Reference type: Journal
Authors: Alizadeh T, Rafiei F, Hamidi N, Ganjali MR
Article Title: A new electrochemical sensing platform for Cr(III) determination based on nano-structured Cr(III)-imprinted polymer-modified carbon composite electrode.
Publication date: 2017
Journal: Electrochimica Acta
Volume: 247
Page numbers: 812-819.
DOI: 10.1016/j.electacta.2017.07.081
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0013468617314998

Abstract: A carbon composite electrode (CCE) impregnated with nano-structured Cr(III)-imprinted polymer (IP-CCE) was introduced as a novel sensing platform for Cr(III) measurement. The nanoparticles of Cr(III)-imprinted polymers were synthesized using itaconic acid and ethylene glycol dimethacrylate, as complexing monomer and cross-linker, respectively. For analysis purpose, the electrode was incubated into the Cr(III) solution for a definite time and then differential pulse voltammetry technique was applied for the relevant signal recording. The Oxidative differential pulse voltammetry response of Cr(III) obtained using the IP-modified electrode was significantly higher than that recorded by either CCE or the CCE included with the non-imprinted polymer (NIP). Various factors, known to affect the response behavior of the IP-CCE, were investigated and optimized. The sensor exhibited distinct linear response ranges of 0.1 - 10 μmol L-1 with the sensitivity of 4.25 A mol-1 L. The lower detection limit of the sensor was calculated to be 17.6 nmol L-1 (S/N = 3). The sensor was applied successfully for the determination of Cr(III) in water and urine real samples
Template and target information: chromium ion, Cr(III)
Author keywords: Chromium (III), ion imprinted polymer, Carbon composite, Nano-structured, differential pulse voltammetry

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