An Electrochemical Sensor for the Oxidative Determination of 4-Nitro Phenol at Poly (Bromo Cresolpurple) Modified Glassy Carbon Electrode
| dc.contributor.advisor | Negash, Negussie (PhD) | |
| dc.contributor.author | Abebe, Ananiya | |
| dc.date.accessioned | 2021-03-30T10:45:33Z | |
| dc.date.accessioned | 2023-11-09T16:18:58Z | |
| dc.date.available | 2021-03-30T10:45:33Z | |
| dc.date.available | 2023-11-09T16:18:58Z | |
| dc.date.issued | 2020-02-06 | |
| dc.description.abstract | A glassy carbon electrode was modified with bromocresol purple (BCP) and characterized for the electrochemical oxidation of 4-nitrophenol (4-NP) by cyclic voltammetry and differential pulse voltammetry. The oxidation peak current of 4-NP at the modified electrode was increased (compared to the bare GCE), thus indicating that the BCP exhibits a remarkable enhancement effect on the electrochemical oxidation of 4-NP. The effects of loading with BCP, pH value and scan rate were examined. The oxidation peak current of 4-NP is proportional to its concentration in the range of 4.0 μM to 100 μM, with a correlation coefficient of 0.984. The detection limit is 2.8 μM. The method is simple, selective and sensitive. It was successfully applied for the determination of 4-NP in water samples, with recoveries ranging from 100% to 101%. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/25815 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | 4-Nitrophenol | en_US |
| dc.subject | Polybromocresol Purple (Bcp) | en_US |
| dc.subject | Oxidation | en_US |
| dc.subject | Cyclic Voltammetry (Cv) | en_US |
| dc.subject | Differential Pulse Voltammetry (Dpv) | en_US |
| dc.subject | Modified Electrode | en_US |
| dc.subject | Electropolymerization | en_US |
| dc.title | An Electrochemical Sensor for the Oxidative Determination of 4-Nitro Phenol at Poly (Bromo Cresolpurple) Modified Glassy Carbon Electrode | en_US |
| dc.type | Thesis | en_US |