Electrochemical determination of adriamycin compounds in urine by preconcentration at carbon paste electrodes

1982 ◽  
Vol 54 (14) ◽  
pp. 2556-2560 ◽  
Author(s):  
Edward N. Chaney ◽  
Richard P. Baldwin
Keyword(s):  
Electrochemical Determination ◽  
Carbon Paste ◽  
Carbon Paste Electrodes

Study of electrochemical determination of capsaicin and dihydrocapsaicin at carbon paste electrodes modified by β-cyclodextrin

2018 ◽  
Vol 814 ◽  
pp. 174-183 ◽  
Author(s):  
Elena Díaz de León Zavala ◽  
Luz María Torres Rodríguez ◽  
Antonio Montes-Rojas ◽  
Victor Hugo Torres Mendoza ◽  
Alejandra Elizabeth Liñán González
Keyword(s):  
Electrochemical Determination ◽  
Carbon Paste ◽  
Carbon Paste Electrodes

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 meloxicam in plasma samples using a highly selective and sensitive voltammetric sensor based on carbon paste electrodes modified by molecularly imprinted polymer nanoparticle–multiwall carbon nanotubes

2015 ◽  
Vol 7 (4) ◽  
pp. 1280-1292 ◽  
Author(s):  
Saman Azodi-Deilami ◽  
Ebadullah Asadi ◽  
Majid Abdouss ◽  
Fardin Ahmadi ◽  
Alireza Hassani Najafabadi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
Voltammetric Sensor ◽  
Plasma Samples ◽  
Carbon Paste ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Carbon Paste Electrodes ◽  
Multiwall Carbon

A highly selective voltammetric sensor for the determination of meloxicam using a MIP@MWCNT–CPE is introduced.

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
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