Table 3 Comparison of standard methods of deposition of PPD membrane
From: Improvement of amperometric transducer selectivity using nanosized phenylenediamine films
Analyzed substance and its concentration | 10 CVAs in 5 mM phenylenediamine | 40 min at a constant potential of 0.7 V in 100 mM phenylenediamine | ||
|---|---|---|---|---|
Response, nA | % of response without membrane | Response, nA | % of response without membrane | |
H2O2, 50 μM | 12.0 ± 1.4 | 267.3 ± 26.0 | 4.5 ± 1.3 | 99.3 ± 29.7 |
Ascorbic acid, 120 μM | < 0.1 | 0 | < 0.1 | 0 |
Cysteine, 300 μM | 0.2 ± 0.2 | 1.9 ± 1.9 | 0.6 ± 0.4 | 6.3 ± 3.8 |
Uric acid, 450 μM | < 0.1 | 0 | < 0.1 | 0 |
Dopamine, 6 μM | < 0.1 | 0 | < 0.1 | 0 |