Development of Simple Electrochemical Sensor for Selective Determination of Methadone in Biological Samples Using Multi-walled Carbon Nanotubes Modified Pencil Graphite Electrode

2015 ◽  
Vol 62 (5) ◽  
pp. 461-468 ◽  
Author(s):  
Esmaeel Alipour ◽  
Mir Reza Majidi ◽  
Omid Hoseindokht
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Sensor ◽  
Biological Samples ◽  
Graphite Electrode ◽  
Pencil Graphite Electrode ◽  
Selective Determination ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Modification of a disposable pencil graphite electrode with multiwalled carbon nanotubes: application to electrochemical determination of diclofenac sodium in some pharmaceutical and biological samples

2016 ◽  
Vol 8 (19) ◽  
pp. 3966-3974 ◽  
Author(s):  
Golnaz Parvizi Fard ◽  
Esmaeel Alipour ◽  
Reza Emam Ali Sabzi
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Sensor ◽  
Multiwalled Carbon Nanotubes ◽  
Biological Samples ◽  
Graphite Electrode ◽  
Diclofenac Sodium ◽  
Electrochemical Determination ◽  
Pencil Graphite Electrode ◽  
Multiwalled Carbon

A MWCNTs/PGE was developed as an electrochemical sensor and used for the determination of diclofenac sodium (DIC).

scholarly journals Determination of Heavy Metals in Herbal Food Supplements using Bismuth/Multi-walled Carbon Nanotubes/Nafion modified Graphite Electrodes sourced from Waste Batteries

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Shirley Palisoc ◽  
Remuel Isaac M. Vitto ◽  
Michelle Natividad
Keyword(s):  
Carbon Nanotubes ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Graphite Electrode ◽  
Anodic Stripping Voltammetry ◽  
Graphite Electrodes ◽  
Bismuth Nanoparticles ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

AbstractAn electrochemical sensor based on graphite electrode extracted from waste zinc-carbon battery is developed. The graphite electrode was modified with bismuth nanoparticles (BiNP), multi-walled carbon nanotubes (MWCNT) and Nafion via the drop coating method. The bare and modified graphite electrodes were used as the working electrode in anodic stripping voltammetry for the determination of trace amounts of cadmium (Cd2+) and lead (Pb2+). The modified electrode exhibited excellent electroanalytical performance for heavy metal detection in comparison with the bare graphite electrode. The linear concentration range from 5 parts per billion (ppb) to 1000 ppb (R2 = 0.996), as well as detection limits of 1.06 ppb for Cd2+ and 0.72 ppb for Pb2+ were obtained at optimized experimental conditions and parameters. The sensor was successfully utilized for the quantification of Cd2+ and Pb2+ in herbal food supplement samples with good agreement to the results obtained by atomic absorption spectroscopy. Thus, the BiNP/MWCNT/Nafion modified graphite electrode is a cost-effective and environment-friendly sensor for monitoring heavy metal contamination.

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