scholarly journals A screen printed carbon electrode modified with carbon nanotubes and gold nanoparticles as a sensitive electrochemical sensor for determination of thiamphenicol residue in milk

RSC Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 2714-2722 ◽  
Author(s):  
Aliyu Muhammad ◽  
Reza Hajian ◽  
Nor Azah Yusof ◽  
Nafiseh Shams ◽  
Jaafar Abdullah ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Electrochemical Sensor ◽  
Carbon Electrode ◽  
Fresh Milk ◽  
Screen Printed Carbon Electrode ◽  
Electro Oxidation ◽  
Screen Printed

The first portable electrochemical sensor was constructed for monitoring of thiamphenicol residue in fresh milk based on electro-oxidation of thiamphenicol on the surface of CNTs and AuNPs.

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.

Application of Gold Nanoparticles with 1,6-Hexanedithiol Modified Screen-Printed Carbon Electrode As a Sensor for Determination of Arsenic in Environmental Samples

2020 ◽  
Vol MA2020-01 (29) ◽  
pp. 2237-2237
Author(s):  
Abdunnaser Mohamed Etorki ◽  
Mahmoud Abdelsamed Elraies ◽  
Labib Ali Awin ◽  
Mahsen Elhabbat ◽  
Ibrahim Shaban
Keyword(s):  
Gold Nanoparticles ◽  
Environmental Samples ◽  
Carbon Electrode ◽  
Screen Printed Carbon Electrode ◽  
Screen Printed
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