scholarly journals Differential Pulse Anodic Voltammetric Determination of Tiapride Hydrochloride in Pharmaceutical Preparation and Human Urine Using Carbon Paste Electrodes

2011 ◽  
Vol 27 (5) ◽  
pp. 535 ◽  
Author(s):  
S. I. M. ZAYED
Keyword(s):  
Human Urine ◽  
Pharmaceutical Preparation ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Carbon Paste ◽  
Carbon Paste Electrodes

scholarly journals Differential Pulse Voltammetric Determination of Albendazole and Mebendazole in Pharmaceutical Formulations Based on Modified Sonogel Carbon Paste Electrodes with Perovskite-Type LaFeO3Nanoparticles

2016 ◽  
Vol 163 (8) ◽  
pp. B428-B434 ◽  
Author(s):  
Isaac Yves Lopes de Macedo ◽  
Luane Ferreira Garcia ◽  
Aparecido Ribeiro de Souza ◽  
Adélia Maria Lima da Silva ◽  
Carlos Fernandez ◽  
...  
Keyword(s):  
Pharmaceutical Formulations ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Carbon Paste ◽  
Carbon Paste Electrodes ◽  
Perovskite Type

Differential pulse voltammetric determination of lead(II) with benzoin oxime-modified carbon paste electrodes

1994 ◽  
Vol 6 (7) ◽  
pp. 597-603 ◽  
Author(s):  
Peng Tuzhi ◽  
Tang Zhe ◽  
Wang Guoshun ◽  
Shen Baoen
Keyword(s):  
Differential Pulse ◽  
Voltammetric Determination ◽  
Carbon Paste ◽  
Carbon Paste Electrodes ◽  
Modified Carbon Paste Electrodes

Electrochemical oxidation at carbon paste electrode of tacrine and 1-hydroxytacrine and differential pulse voltammetric determination of tacrine in pharmaceuticals and human urine

The Analyst ◽  
2000 ◽  
Vol 125 (11) ◽  
pp. 2016-2019 ◽  
Author(s):  
Irene Aparicio ◽  
Manuel Callejón ◽  
Juan Carlos Jiménez ◽  
Miguel Angel Bello ◽  
Alfonso Guiraúm
Keyword(s):  
Electrochemical Oxidation ◽  
Carbon Paste Electrode ◽  
Human Urine ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Carbon Paste ◽  
Paste Electrode

Differential Pulse Voltammetric Determination of Piroxicam on Lanthanide Ferric Oxide Nanoparticles-Carbon Paste Modified Electrode

2018 ◽  
Vol 14 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Isaac Yves Lopes de Macedo ◽  
Morgana Fernandes Alecrim ◽  
Luane Ferreira Garcia ◽  
Aparecido Ribeiro de Souza ◽  
Wallans Torres Pio dos Santos ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Ferric Oxide ◽  
Differential Pulse ◽  
Voltammetric Determination ◽  
Oxide Nanoparticles ◽  
Carbon Paste ◽  
Carbon Paste Modified Electrode

scholarly journals Polyvinyl Chloride Modified Carbon Paste Electrodes for Sensitive Determination of Levofloxacin Drug in Serum, Urine, and Pharmaceutical Formulations

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3150
Author(s):  
Fatehy M. Abdel-Haleem ◽  
Sonia Mahmoud ◽  
Nour Eldin T. Abdel-Ghani ◽  
Rasha Mohamed El Nashar ◽  
Mikhael Bechelany ◽  
...  
Keyword(s):  
Bacterial Infections ◽  
Pharmaceutical Preparation ◽  
Pharmaceutical Formulations ◽  
Selectivity Coefficient ◽  
Pvc Membrane ◽  
Carbon Paste ◽  
Serum Samples ◽  
Carbon Paste Electrodes ◽  
Antibiotic Drug

Levofloxacin (LF) is a medically important antibiotic drug that is used to treat a variety of bacterial infections. In this study, three highly sensitive and selective carbon paste electrodes (CPEs) were fabricated for potentiometric determination of the LF drug: (i) CPEs filled with carbon paste (referred to as CPE); (ii) CPE coated (drop-casted) with ion-selective PVC membrane (referred to as C-CPE); (iii) CPE filled with carbon paste modified with a plasticizer (PVC/cyclohexanone) (referenced as P-CPE). The CPE was formulated from graphite (Gr, 44.0%) and reduced graphene oxide (rGO, 3.0%) as the carbon source, tricresyl phosphate (TCP, 47.0%) as the plasticizer; sodium tetrakis[3,5-bis(trifluoromethyl)phenyl] borate (St-TFPMB, 1.0%) as the ion exchanger; and levofloxacinium-tetraphenylborate (LF-TPB, 5.0%) as the lipophilic ion pair. It showed a sub-Nernstian slope of 49.3 mV decade−1 within the LF concentration range 1.0 × 10−2 M to 1.0 × 10−5 M, with a detection limit of 1.0 × 10−5 M. The PVC coated electrode (C-CPE) showed improved sensitivity (in terms of slope, equal to 50.2 mV decade−1) compared to CPEs. After the incorporation of PVC paste on the modified CPE (P-CPE), the sensitivity increased at 53.5 mV decade−1, indicating such improvement. The selectivity coefficient (log KLF2+,Fe+3pot.) against different interfering species (Na+, K+, NH4+, Ca2+, Al3+, Fe3+, Glycine, Glucose, Maltose, Lactose) were significantly improved by one to three orders of magnitudes in the case of C-CPE and P-CPE, compared to CPEs. The modification with the PVC membrane coating significantly improved the response time and solubility of the LF-TPB within the electrode matrix and increased the lifetime. The constructed sensors were successfully applied for LF determination in pharmaceutical preparation (Levoxin® 500 mg), spiked urine, and serum samples with high accuracy and precision.

Determination of chloramphenicol by differential pulse voltammetry at carbon paste electrodes – The use of sodium sulfite for removal of oxygen from electrode surface

2011 ◽  
Vol 76 (5) ◽  
pp. 383-397 ◽  
Author(s):  
Ferenc T. Pastor ◽  
Hana Dejmková ◽  
Jiří Zima ◽  
Jiří Barek
Keyword(s):  
Differential Pulse Voltammetry ◽  
Glassy Carbon ◽  
Sodium Sulfite ◽  
Differential Pulse ◽  
Optimal Conditions ◽  
Carbon Paste ◽  
Tricresyl Phosphate ◽  
Carbon Paste Electrodes ◽  
Pulse Voltammetry

The possibility of determination of chloramphenicol by differential pulse voltammetry at four different carbon paste electrodes, in the full pH range (2–12) of Britton–Robinson (BR) buffer was investigated. Electrodes were prepared by mixing spectroscopic graphite powder or glassy carbon microbeads with mineral oil (Nujol) or tricresyl phosphate. Under optimal conditions (BR buffer pH 12, the electrode prepared from glassy carbon microbeads and tricresyl phosphate), linear calibration graph was obtained only in 10–5 M chloramphenicol concentration range. Determination of lower concentrations of chloramphenicol was complicated by irreproducible peak of oxygen from the carbon paste which overlapped with peak of chloramphenicol. Addition of sodium sulfite removed the oxygen peak without influence on the peak of chloramphenicol. Under optimal conditions (electrode paste made from glassy carbon microbeads, BR buffer pH 10 and 0.5 M sodium sulfite), straight calibration line was obtained in the 10–6 and 10–5 M chloramphenicol concentration range. Limit of determination was 5 × 10–7 mol/l.

Cathodic Stripping Voltammetric Determination of Doxazosin in Urine and Pharmaceutical Tablets Using Carbon Paste Electrodes

The Analyst ◽  
1997 ◽  
Vol 122 (8) ◽  
pp. 849-854 ◽  
Author(s):  
Adela Arranz ◽  
Susana Fernández de Betoño ◽  
José M. Moreda ◽  
Adolfo Cid ◽  
Juan F. Arranz
Keyword(s):  
Voltammetric Determination ◽  
Carbon Paste ◽  
Pharmaceutical Tablets ◽  
Carbon Paste Electrodes ◽  
Cathodic Stripping
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