Voltammetric Determination of Penicillamine Using a Carbon Paste Electrode Modified with Multiwall Carbon Nanotubes In the Presence of Methyldopa as a Mediator
| Author | Fardin Safari | en |
| Author | Mohsen Keyvanfard | en |
| Author | Hassan Karimi-Maleh | en |
| Author | Khadijeh Alizad | en |
| Issued Date | 2017-07-31 | en |
| Abstract | A multiwall carbon nanotubes-modified carbon paste electrode (MWCNTs/MCPE) was fabricated and used to study the electrooxidation of penicillamine (PA) by electrochemical methods in the presence of methyldopa (MDOP) as a homogeneous mediator. The electrochemical oxidation of PA on the new sensor has been carefully studied. The kinetic parameters such as electron transfer coefficient, α, and catalytic reaction rate constant, K/h, were also determined using electrochemical approaches. The electrocatalytic oxidation peak current of PA showed a linear dependent on the PA concentrations and linear calibration curves were obtained in the ranges of 0.2-250.0 µM of PA concentration with square wave voltammetry (SWV) method. The detection limit (3σ) was determined as 0.1 µM. This sensor was also examined as a fast, selective, simple and precise new sensor for voltammetric determination of PA in real samples such as drug and urine. | en |
| DOI | https://doi.org/10.22037/ijpr.2017.2085 | en |
| Keyword | Penicillamine | en |
| Keyword | Multiwall carbon nanotubes | en |
| Keyword | Modified electrode | en |
| Keyword | Sensor | en |
| Keyword | Electrocatalysis | en |
| Publisher | Brieflands | en |
| Title | Voltammetric Determination of Penicillamine Using a Carbon Paste Electrode Modified with Multiwall Carbon Nanotubes In the Presence of Methyldopa as a Mediator | en |
| Type | Original Article | en |
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