Voltammetric determination of venlafaxine as an antidepressant drug employing Gd2O3 nanoparticles graphite screen printed electrode
来源期刊：Journal of Rare Earths2019年第3期
论文作者：Mohammad Reza Ganjali Farnoush Faridbod Taher Alizadeh
文章页码：322 - 328
摘 要：Graphite screen printed electrode modified with Gd2 O3 nanoparticles（Gd2 O3/SPE） was developed for the determination of venlafaxine（VF）. The Gd2 O3 nanoparticles were thoroughly characterized by scanning electron microscopy（SEM）, transmission electron microscopy（TEM） and X-ray diffraction（XRD） analyses. To study the electrochemical behaviour of venlafaxine cyclic voltammetry（CV）, chronoamperometry（CHA）and differential pulse voltammetry（DPV） were employed. These studies reveal that the oxidation of venlafaxine is facilitated at Gd2 O3/SPE. After optimization of analytical conditions, analysis of venlafaxine using the modified electrode in 0.1 mol/L PBS（pH 7.0） demonstrates that the peak currents corresponding to venlafaxine vary linearly with its concentration in the range of 5.0 ×10-6-9.0 × 10-4 mol/L. The detection limit（S/N = 3） of 2.1 × 10-7 mol/L is obtained for venlafaxine using DPV. The prepared modified electrode benefits from advantages such as simple preparation method, high sensitivity and low detection limit.Moreover, the evaluation of practical applicability of this proposed method is successful in the identification of venlafaxine in pharmaceutical formulations, urine and water samples.
Mohammad Reza Ganjali3,4，Farnoush Faridbod3，Taher Alizadeh5
3. Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran4. Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences5. Department of Analytical Chemistry, Faculty of Chemistry, College of Science, University of Tehran
摘 要：Graphite screen printed electrode modified with Gd2 O3 nanoparticles（Gd2 O3/SPE） was developed for the determination of venlafaxine（VF）. The Gd2 O3 nanoparticles were thoroughly characterized by scanning electron microscopy（SEM）, transmission electron microscopy（TEM） and X-ray diffraction（XRD） analyses. To study the electrochemical behaviour of venlafaxine cyclic voltammetry（CV）, chronoamperometry（CHA）and differential pulse voltammetry（DPV） were employed. These studies reveal that the oxidation of venlafaxine is facilitated at Gd2 O3/SPE. After optimization of analytical conditions, analysis of venlafaxine using the modified electrode in 0.1 mol/L PBS（pH 7.0） demonstrates that the peak currents corresponding to venlafaxine vary linearly with its concentration in the range of 5.0 ×10-6-9.0 × 10-4 mol/L. The detection limit（S/N = 3） of 2.1 × 10-7 mol/L is obtained for venlafaxine using DPV. The prepared modified electrode benefits from advantages such as simple preparation method, high sensitivity and low detection limit.Moreover, the evaluation of practical applicability of this proposed method is successful in the identification of venlafaxine in pharmaceutical formulations, urine and water samples.
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