| Autor: |
Anshori, Isa, Kepakisan, Komang Arya Attyla, Nuraviana Rizalputri, Lavita, Rona Althof, Raih, Nugroho, Antonius Eko, Siburian, Rikson, Handayani, Murni |
| Zdroj: |
Nanocomposites; December 2022, Vol. 8 Issue: 1 p155-166, 12p |
| Abstrakt: |
AbstractDopamine concentration abnormalities in the body can cause various disorders and diseases such as Parkinson's, Tourette's syndrome, and depression. In this study, graphene oxide (GO) was combined with Fe3O4to sensitively and selectively detect dopamine. The performance was evaluated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. The results of testing with CV on the solution [Fe(CN)6] showed that a modification with GO gave a maximum effective surface area value of 0.0127 cm2, proving that GO can increase the effective area and conductivity of the sensor. DPV testing shows that dopamine detection using GO/Fe3O4has a linear range at a concentration of 1–10 μM with a detection limit of 0.48 μM and a quantification limit of 1.6 μM. GO/Fe3O4also shows good selectivity where the peak current is separated by 0.245 V with ascorbic acid, which is the closest interference compound. |
| Databáze: |
Supplemental Index |
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