Effect of carbon black functionalization on the analytical performance of a tyrosinase biosensor based on glassy carbon electrode modified with dihexadecylphosphate film

2018 ◽  
Vol 116 ◽  
pp. 41-47 ◽  
Author(s):  
Gisela Ibáñez-Redín ◽  
Tiago Almeida Silva ◽  
Fernando Campanhã Vicentini ◽  
Orlando Fatibello-Filho
Keyword(s):  
Carbon Black ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Analytical Performance ◽  
Carbon Electrode ◽  
Tyrosinase Biosensor

scholarly journals Determination of Phenol and Chlorophenols at Single-Wall Carbon Nanotubes/Poly(3,4-ethylenedioxythiophene) Modified Glassy Carbon Electrode Using Flow Injection Amperometry

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Negussie Negash ◽  
Hailemichael Alemu ◽  
Merid Tessema
Keyword(s):  
Carbon Nanotubes ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Flow Injection ◽  
Analytical Performance ◽  
Single Wall Carbon Nanotubes ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Single Wall Carbon

Phenol and chlorophenols were investigated using single-wall carbon nanotubes (SWCNT) and poly(3,4-ethylenedioxythiophene) (PEDOT) composite modified glassy carbon electrode (SWCNT/PEDOT/GCE) as a detector in flow injection system. Optimization of experimental variables such as the detection potential, flow rate, and pH of the carrier solution (0.1 M sodium acetate) for the determination of phenol (P), 4-chlorophenol (CP), 2,4-dichlorophenol (DCP), 2,4,6-trichlorophenol (TCP), and pentachlorophenol (PCP) were performed. Under these conditions, analytical parameters were calculated from the calibration curve of measured amperometric responses as a function of concentrations of phenol and chlorophenols. The designed electrode exhibited very good analytical performance. The designed electrode was tested with 20 repetitive injections of each analyte and showed good operational stability. The analytical performance of the SWCNT/PEDOT/GCE electrode under flow through conditions was tested and was found to be impressive. The electrode showed a wider dynamic range for the detection of phenol and chlorophenols with low limits of detection compared with other enzymatic and nonenzymatic sensors. These results suggest that the method is quite useful for the analysis and monitoring of phenols and chlorophenols.

Acetylcholinesterase biosensor for inhibitor measurements based on glassy carbon electrode modified with carbon black and pillar[5]arene

Talanta ◽  
2015 ◽  
Vol 144 ◽  
pp. 559-568 ◽  
Author(s):  
Rezeda V. Shamagsumova ◽  
Dmitry N. Shurpik ◽  
Pavel L. Padnya ◽  
Ivan I. Stoikov ◽  
Gennady A. Evtugyn
Keyword(s):  
Carbon Black ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode

Glassy carbon electrode modified with carbon black and cross-linked alginate film: a new voltammetric electrode for paraquat determination

2019 ◽  
Vol 411 (15) ◽  
pp. 3269-3280 ◽  
Author(s):  
Milena Rafalski Pacheco ◽  
Sergiane Caldas Barbosa ◽  
Rafael Fonseca Neves Quadrado ◽  
André Ricardo Fajardo ◽  
Daiane Dias
Keyword(s):  
Carbon Black ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode

Application of botryosphaeran as a carbon black adherent on a glassy carbon electrode for the electrochemical determination of cyclobenzaprine

2021 ◽  
pp. 138176
Author(s):  
Jessica Scremin ◽  
André Olean-Oliveira ◽  
Carlos A.R. Salamanca-Neto ◽  
Graziela S. Ceravolo ◽  
Robert F.H. Dekker ◽  
...  
Keyword(s):  
Carbon Black ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Electrochemical Determination ◽  
Carbon Electrode

scholarly journals Highly Sensitive Levodopa Determination by Means of Adsorptive Stripping Voltammetry on Ruthenium Dioxide-Carbon Black-Nafion Modified Glassy Carbon Electrode

Sensors ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 60
Author(s):  
Anna Górska ◽  
Beata Paczosa-Bator ◽  
Robert Piech
Keyword(s):  
Carbon Black ◽  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
Tap Water ◽  
Pharmaceutical Products ◽  
Carbon Electrode ◽  
Step Potential ◽  
Voltammetric Method ◽  
Highly Sensitive

A new, highly sensitive Adsorptive Stripping Voltammetric method for levodopa determination was developed. As a working electrode, the glassy carbon electrode (GCE) modified with carbon black (CB), RuO2·xH2O (RuO2) and Nafion was used (CB-RuO2-Nafion GCE). Levodopa signal obtained on the modified electrode was 12 times higher compared to GCE. During research, instrumental parameters were optimized: sampling time ts = 10 ms, waiting time tw = 10 ms, step potential Es = 5 mV and pulse amplitude ΔE = 50 mV. Preconcentration potential Eprec was equal to 0 mV. The best results were obtained in 0.025 M perchloric acid (approx. pH 1.4). Signal repeatability measured on the CB-RuO2-Nafion modified electrode for 0.2 µM of levodopa was equal to 2.1% (levodopa concentration 1 µM, n = 5). Linearity of the method was achieved in the concentration range from 1 to 8 µM. Limit of detection was equal to 17 nM. Recoveries calculated for pharmaceutical products and tap water measurements were in the range 102–105%, which confirms the accuracy of the developed. The applicability of the method was confirmed by analysis of pharmaceutical products and tap water samples. Based on obtained results, it might be concluded that the developed voltammetric method could be a useful tool in routine drug analysis.

scholarly journals Glassy Carbon Electrode Modified with Layering of Carbon Black/Poly(Allylamine Hydrochloride) Composite for Multianalyte Determination

2020 ◽  
Author(s):  
Jessica Scremin ◽  
Gabriel J. Mattos ◽  
Robert D. Crapnell ◽  
Samuel J. Rowley‐Neale ◽  
Craig E. Banks ◽  
...  
Keyword(s):  
Carbon Black ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Allylamine Hydrochloride
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