Simple flow injection for determination of sulfite by amperometric detection using glassy carbon electrode modified with carbon nanotubes–PDDA–gold nanoparticles

Talanta ◽  
2015 ◽  
Vol 133 ◽  
pp. 134-141 ◽  
Author(s):  
Maliwan Amatatongchai ◽  
Wongduan Sroysee ◽  
Sanoe Chairam ◽  
Duangjai Nacapricha
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Flow Injection ◽  
Amperometric Detection ◽  
Carbon Electrode ◽  
Simple Flow

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.

Amperometric determination of ascorbic acid with a glassy carbon electrode modified with TiO2-gold nanoparticles integrated into carbon nanotubes

2018 ◽  
Vol 185 (5) ◽  
Author(s):  
Jessica Scremin ◽  
Eduardo César Melo Barbosa ◽  
Carlos Alberto Rossi Salamanca-Neto ◽  
Pedro Henrique Cury Camargo ◽  
Elen Romão Sartori
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Amperometric Determination

Determination of 2,4-dimethylphenol by anodic voltammetry and flow injection with amperometric detection at a glassy carbon electrode

The Analyst ◽  
1992 ◽  
Vol 117 (12) ◽  
pp. 1919-1923 ◽  
Author(s):  
Carolina Fernández ◽  
Elena Chico ◽  
Paloma Yáñez-Sedeño ◽  
José M. Pingarrón ◽  
Luis Ma. Polo
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Flow Injection ◽  
Amperometric Detection ◽  
Carbon Electrode ◽  
Anodic Voltammetry
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