Table 2 Responses and sensitivity of platinum disk transducer to electroactive materials. Responses are received in 10 mM HEPES buffer, pH 7.4
From: Improvement of amperometric transducer selectivity using nanosized phenylenediamine films
| Analyzed substance | Undiluted sample | 20-fold dilution of the sample | 100-fold dilution of the sample | Mean sensitivity of transducer, nA/mM | ||
|---|---|---|---|---|---|---|
| Transducer response, nA | Substance concentration in working cell, μM | Transducer response, nA | Substance concentration in working cell, μM | Transducer response, nA | ||
| H2O2 | 4.5 ± 1.5 | 50 | 4.6 ± 1.4 | 50 | 4.2 ± 1.6 | 90 ± 30 |
| Ascorbic acid | 52.5 ± 25.1 | 6 | 2.7 ± 1.1 | 1.2 | 0.4 ± 0.2 | 438 ± 209 |
| Cysteine | 9.0 ± 5.7 | 15 | 0.5 ± 0.3 | 3 | 0.1 ± 0.1 | 30 ± 19 |
| Uric acid | 62.4 ± 31.2 | 22.5 | 3.0 ± 1.4 | 4.5 | 0.6 ± 0.2 | 139 ± 70 |
| Dopamine | 2.7 ± 0.5 | 0.3 | 0.1 ± 0.1 | 0.06 | 0 | 450 ± 83 |