Electrochemical detection of aqueous nitrite based on poly(aniline-co-o-aminophenol)-modified glassy carbon electrode
Liu, Lu; Cui, Hao; An, Hao; Zhai, J; Pan, Y
| HERO ID | 4132168 |
|---|---|
| In Press | No |
| Year | 2017 |
| Title | Electrochemical detection of aqueous nitrite based on poly(aniline-co-o-aminophenol)-modified glassy carbon electrode |
| Authors | Liu, Lu; Cui, Hao; An, Hao; Zhai, J; Pan, Y |
| Journal | Ionics |
| Volume | 23 |
| Issue | 6 |
| Page Numbers | 1517-1523 |
| Abstract | Nitrite is a common contaminant in drinking water and groundwater with high environmental and health risks. Electrochemical sensing method is a selective and easy technique to detect nitrite in water. In this study, we report a research about a poly(aniline-co-o-aminophenol)-modified glassy carbon electrode (PAOA/GCE) for aqueous nitrite detection. With stable redox activity and conductivity in a wide pH range compared with polyaniline, PAOA is suitable to be used as electrode material in a neutral medium. The PAOA/GCE was prepared by cyclic voltammogram method by electrochemical copolymerization of o-aminophenol and aniline. SEM and FT-IR results proved the formation of PAOA, and the electrode exhibited higher responses toward nitrite oxidation compared with polyaniline-modified GCE and bare GCE. We also studied the impact of scan rate, pH, and temperature on nitrite detection. The PAOA/GCE could be used in a wide pH range from 2 to 8 and used to detect nitrite in the linear range from 5.0 x 10(-6) to 2.0 x 10(-3) M with the detection limit of 2 x 10(-6) M. Its excellent reproducibility, stability, and anti-interference ability make it a promising electrode in detecting aqueous nitrite in drinking water and groundwater. |
| Doi | 10.1007/s11581-017-1972-6 |
| Wosid | WOS:000402066200019 |
| Url | <Go to ISI>://WOS:000402066200019 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Nitrite detection; Poly(aniline-co-o-aminophenol); Conducting polymers.; Electrochemical detection |