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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