Table 3: Effect of co-existing compounds in the amperometric determination of 0.2 μM of AA with the proposed electrode.
Interference | Concentration (μM) | Variation of amperometric peak (%) |
Dopamine | 25 | 0.83 |
Uric acid | 20 | 1.5 |
Glucose | 20 | 4.5 |
Sucrose | 20 | 1.2 |
Cysteine | 20 | 4.1 |
Tryptophan | 20 | 5 |
Vitamin B1 | 20 | 2.7 |
Vitamin B6 | 20 | 3.8 |
Oxalic acid | 20 | 2.8 |