Poly(O-Phenylene Diamine) Reformed Pencil Graphite as the Disposable Electrochemical Sensor for Voltammetric Analysis of Tryptamine

Abstract:

By means of electropolymerization process, a simple as well as proficient electrochemical sensor was developed for electrochemical resolution of tryptamine. The morphology and electrochemistry of thus fabricated poly (O-Phenylene diamine) reformed pencil graphite is evaluated thoroughly by FESEM along with DPV and CV respectively. Under experimental settings, finely resolved irreversible electro-oxidation peak at potential +0.594 V obtained for tryptamine on the altered electrode surface with phosphate buffer of pH 9 as supporting electrolyte. The oxidation peak current and tryptamine concentration are observed to possess linearity in the range of 0.4 μM to 117 μM with R² = 0.99. Additionally the limit of detection (LOD) for tryptamine quantification is found as 0.2 μM. The sensor exhibited superior analytical properties such as high reproducibility, repeatability and anti-interference capability. The practical efficiency of fabricated sensor tested successfully in cheese obtained from milk.

• Periodical: Key Engineering Materials (Volume 980)
• Pages: 49-56
• DOI: https://doi.org/10.4028/p-Jfp00Y
• Online since: April 2024
• Authors: Aswathy S. Murali, Chippy Harish, Sherin Susan Cherian, Gayathri S. Nair, S.K. Lekshmi, Surya Gopidas, Beena Saraswathyamma*
• Keywords: Electropolymerization, O-Phenylene Diamine, Pencil Graphite, Tryptamine

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