Amperometric determination of hydrogen peroxide with a manganese dioxide film-modified screen printed carbon electrode

1998 ◽  
Vol 362 (2) ◽  
pp. 194-200 ◽  
Author(s):  
Klemens Schachl ◽  
Hailemichael Alemu ◽  
K. Kalcher ◽  
Helmut Moderegger ◽  
Ivan Svancara ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Manganese Dioxide ◽  
Carbon Electrode ◽  
Amperometric Determination ◽  
Screen Printed Carbon Electrode ◽  
Dioxide Film ◽  
Screen Printed

Flow injection amperometric determination of isoniazid using a screen-printed carbon electrode modified with silver hexacyanoferrates nanoparticles

2012 ◽  
Vol 171-172 ◽  
pp. 795-802 ◽  
Author(s):  
Paulo Roberto de Oliveira ◽  
Marcela Mohallem Oliveira ◽  
Aldo J.G. Zarbin ◽  
Luiz Humberto Marcolino-Junior ◽  
Márcio F. Bergamini
Keyword(s):  
Flow Injection ◽  
Carbon Electrode ◽  
Amperometric Determination ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed

scholarly journals First Electrochemical Sensor (Screen-Printed Carbon Electrode Modified with Carboxyl Functionalized Multiwalled Carbon Nanotubes) for Ultratrace Determination of Diclofenac

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 781 ◽  
Author(s):  
Agnieszka Sasal ◽  
Katarzyna Tyszczuk-Rotko ◽  
Magdalena Wójciak ◽  
Ireneusz Sowa
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Sensor ◽  
Multiwalled Carbon Nanotubes ◽  
Active Surface Area ◽  
Carbon Electrode ◽  
Multiwalled Carbon ◽  
Screen Printed Carbon Electrode ◽  
Functionalized Multiwalled Carbon Nanotubes ◽  
Screen Printed

A simple, sensitive and time-saving differential-pulse adsorptive stripping voltammetric (DPAdSV) procedure using a screen-printed carbon electrode modified with carboxyl functionalized multiwalled carbon nanotubes (SPCE/MWCNTs-COOH) for the determination of diclofenac (DF) is presented. The sensor was characterized using optical profilometry, SEM, and cyclic voltammetry (CV). The use of carboxyl functionalized MWCNTs as a SPCE modifier improved the electron transfer process and the active surface area of sensor. Under optimum conditions, very sensitive results were obtained with a linear range of 0.1–10.0 nmol L−1 and a limit of detection value of 0.028 nmol L−1. The SPCE/MWCNTs-COOH also exhibited satisfactory repeatability, reproducibility, and selectivity towards potential interferences. Moreover, for the first time, the electrochemical sensor allows determining the real concentrations of DF in environmental water samples without sample pretreatment steps.

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