| Autor: |
Asha, M., Manjunatha, J. G., Moulya, K. P., Aldossari, Samar A., Mushab, Mohammed S., Nagashree, S. |
| Zdroj: |
Chemical Monthly / Monatshefte für Chemie; Jan2024, Vol. 155 Issue 1, p37-45, 9p |
| Abstrakt: |
The purpose of the current work is to develop an electrochemical method for the detection of methyl orange and to evaluate its behaviour at bare carbon paste sensor and poly(riboflavin)-modified carbon paste sensor (PRFMCPS). Cyclic voltammetry technique was used for the determination of the analyte. The surface morphology of the electrochemical sensor was characterised by field emission scanning electron microscopy. PRFMCPS creates an electrocatalytic contact on the oxidation of methyl orange. PRFMCPS properties were estimated using parameter such as pH of solution, scan rate, repeatability, reproducibility, and stability by cyclic voltammetry. The pH studies done by varying the pH in the range of 5.5–8.0 indicated that the electrode showed high current response at pH 6.5. The scan rate analysis concluded that the reaction is adsorption controlled. The limit of detection and limit of quantification was found to be 0.699 μM and 0.023 μM, respectively, in the linear range of 0.6–8.0 μM. The selectivity of the developed electrode was tested by simultaneous analysis with tartrazine. The developed electrode showed good stability, reproducibility, and repeatability. Electrochemical oxidation of methyl orange in phosphate buffer solution of 0.2 M in pH 6.5 was examined for water sample by the application of PRFMCPS. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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