Differential pulse stripping voltammetric determination of the antipsychotic medication olanzapine at a magnetic nano-composite with a core/shell structure

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 46095-46103 ◽  
Author(s):  
Majid Arvand ◽  
Setareh Orangpour ◽  
Navid Ghodsi
Keyword(s):  
Antipsychotic Medication ◽  
Carbon Paste Electrode ◽  
Differential Pulse ◽  
Electrochemical Determination ◽  
Core Shell ◽  
Carbon Paste ◽  
Nano Composite ◽  
Core Shell Structure ◽  
Paste Electrode

Fe3O4@Ag core/shell MNPs were used for modification of carbon paste electrode and the modified electrode was utilized for electrochemical determination of olanzapine.

scholarly journals Electroanalytical Performance of a Carbon Paste Electrode Modified by Coffee Husks for the Quantification of Acetaminophen in Quality Control of Commercialized Pharmaceutical Tablets

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Serge Foukmeniok Mbokou ◽  
Maxime Pontié ◽  
Jean-Philippe Bouchara ◽  
Francis Merlin Melataguia Tchieno ◽  
Evangeline Njanja ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Low Cost ◽  
Pharmaceutical Formulations ◽  
Differential Pulse ◽  
Electrochemical Determination ◽  
Current Response ◽  
Carbon Paste ◽  
Pharmaceutical Tablets ◽  
Paste Electrode

Electrochemical determination of acetaminophen (APAP) was successfully performed using a carbon paste electrode (CPE) modified with coffee husks (CH-CPE). Scanning electron microscopy (SEM) and SEM-energy dispersive X-ray spectroscopy (SEM-EDX) were, respectively, used for the morphological and elemental characterization of coffee husks prior to their utilization. The electrochemical oxidation of APAP was investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and square wave voltammetry (SWV). SWV technique appeared to be more sensitive since the oxidation current of APAP was twofold higher with the CH-CPE sensor than with the bare CPE, in relation to the increase in the organophilic character of the electrode surface. Furthermore, on CH-CPE, the current response of APAP varied linearly with its concentration in the range of 6.6 μM to 0.5 mM, leading to a detection limit of 0.66 μM (S/N=3). Finally, the proposed CH-CPE sensor was successfully used to determine the amount of APAP in commercialized tablets (Doliprane® 500 and Doliprane 1000), with a recovery rate ranging from 98% to 103%. This novel sensor opens the way for the development of low-cost and reliable devices for the electroanalysis of pharmaceutical formulations in developing countries.

scholarly journals A novel carbon paste electrode based on nitrogen-doped hydrothermal carbon for electrochemical determination of carbendazim

2017 ◽  
Vol 82 (11) ◽  
pp. 1259-1272 ◽  
Author(s):  
Ana Kalijadis ◽  
Jelena Djordjevic ◽  
Zsigmond Papp ◽  
Bojan Jokic ◽  
Vuk Spasojevic ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Low Cost ◽  
Nitrogen Concentration ◽  
Differential Pulse ◽  
Electrochemical Determination ◽  
Carbon Paste ◽  
Nitrogen Doped ◽  
Cyclic Voltammetry Measurement ◽  
Paste Electrode

In this work, a new carbon paste electrode, prepared from nitrogen- -doped hydrothermal carbon (CHTCN) was applied for the electrochemical detection and determination of carbendazim fungicide. CHTCN samples with the nominal nitrogen content 0.05?0.5 wt. % in glucose precursor were prepared by simple, low-cost synthesis with the accompanying carbonization to 1273 K. The presence of nitrogen in CHTCN samples was confirmed by elemental analysis. Characterization of CHTCN as material for carbon paste electrode was achieved by cyclic voltammetry measurement of the Fe(CN)6 3-/4- redox couple. The results showed that best electrochemical response was obtained from the sample with a nominal nitrogen concentration of 0.1 wt. % and with tricresyl phosphate as a binder. During the development of a differential pulse stripping voltammetric method for carbendazim determination applying new electrode, the following experimental parameters were studied: the sort and amount of binding liquid, the effect of pH, accumulation potential and accumulation time. Under optimal conditions, the electrode offered linearity in the wide concentration range from 25 to 490 ng cm-3 and an estimated detection limit of 1.21 ng cm-3. Moreover, the electrode showed good stability, high selectivity and satisfactory anti-interference ability. Finally, the developed method was successfully applied for the determination of carbendazim traces in spiked tap and river water samples.

Mercury nanodroplets supported at biochar for electrochemical determination of zinc ions using a carbon paste electrode

2015 ◽  
Vol 151 ◽  
pp. 525-530 ◽  
Author(s):  
Paulo Roberto de Oliveira ◽  
Alyne Cristina Lamy-Mendes ◽  
Jeferson Luiz Gogola ◽  
Antonio Salvio Mangrich ◽  
Luiz Humberto Marcolino Junior ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Electrochemical Determination ◽  
Zinc Ions ◽  
Carbon Paste ◽  
Paste Electrode

scholarly journals Electrocatalytic determination of captopril using a carbon paste electrode modified with N-(ferrocenyl methylidene) fluorene-2-amine and graphene/ZnO nanocomposite

2019 ◽  
Vol 84 (2) ◽  
pp. 175-185 ◽  
Author(s):  
Mohadeseh Safaei ◽  
Hadi Beitollahi ◽  
Masoud Shishehbore ◽  
Somayeh Tajik ◽  
Rahman Hosseinzadeh
Keyword(s):  
Modified Electrode ◽  
Carbon Paste Electrode ◽  
Electrocatalytic Oxidation ◽  
Differential Pulse ◽  
Diagnostic Techniques ◽  
Carbon Paste ◽  
Pulse Voltammetry ◽  
Electrocatalytic Determination ◽  
Paste Electrode

A carbon paste electrode (CPE) was modified with N-(ferrocenylmethylidene) fluorene-2-amine and graphene/ZnO nanocomposite. The electrooxidation of captopril (CAP) at the surface of the modified electrode was studied using electrochemical approaches. The electrochemical study of the modified electrode, as well as its efficiency for the electrocatalytic oxidation of captopril, is described. The electrode was used to study the electrocatalytic oxidation of captopril, by cyclic voltammetry (CV), chronoamperometry (CHA) and differential pulse voltammetry (DPV) as diagnostic techniques. It has been found that the oxidation of captopril at the surface of modified electrode occurs at a potential of about 340 mV less positive than that of an unmodified CPE. DPV of captopril at the electrochemical sensor exhibited two linear dynamic ranges (0.1?100.0 and 100.0?800.0 ?M) with a detection limit (3?) of 0.05 ?M.

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