Dual screen-printed electrode modified by gold – palladium binary system for flow-injection amperometric determination of dopamine and ascorbic acid
The gold – palladium binary system electrode posited on the surface of screen-printed carbon electrodes exhibits electrocatalytic activity in the oxidation of dopamine and ascorbic acid. The effect is reflected in a decrease of overvoltage and an increase of oxidation current of organic compounds. T...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Kazan Federal University
2018-03-01
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| Series: | Учёные записки Казанского университета: Серия Естественные науки |
| Subjects: | |
| Online Access: | https://kpfu.ru/dual-screen-printed-electrode-modified-by-gold_340053.html |
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| Summary: | The gold – palladium binary system electrode posited on the surface of screen-printed carbon electrodes exhibits electrocatalytic activity in the oxidation of dopamine and ascorbic acid. The effect is reflected in a decrease of overvoltage and an increase of oxidation current of organic compounds. The possibility of simultaneous voltammetric determination of dopamine and ascorbic acid at dual screen-printed electrode modified by gold – palladium binary system has been established. A method of flow-injection amperometric determination of dopamine and ascorbic acid on this electrode has been introduced. A linear dependence of the response on analytes has been observed in the ranges from 5?10–11 to 5?10–4 M and from 5?10–10 to 5?10–4 M for dopamine and ascorbic acid, respectively. |
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| ISSN: | 2542-064X 2500-218X |