Electrocatalytic Oxidation of Tryptophan at Gold Nanoparticle‐Modified Carbon Ionic Liquid Electrode |
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Authors: | A Safavi S Momeni |
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Institution: | 1. Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran;2. Nanotechnology Research Institute, Shiraz University, Shiraz, Iran |
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Abstract: | The electrochemical behavior of tryptophan was studied at the carbon ionic liquid electrode (CILE) modified with gold nanoparticle (GNP). This electrode has a stable and excellent response toward tryptophan. Under optimum experimental conditions, the calibration curve was linear in the tryptophan concentration range of 5 to 900 µM with an excellent correlation coefficient (0.995). The experimental limit of detection was 4 µM. Contrary to many other electrodes, the oxidation of tryptophan on GNP/CILE does not result in electrode fouling. GNP/CILE has been effectively applied to the determination of tryptophan in composite amino acid injection. |
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Keywords: | Tryptophan Carbon ionic liquid electrode Gold nanoparticles Sensors Ionic liquids |
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