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Studies of the electrochemical behavior of epinephrine at a homocysteine self-assembled electrode |
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| Authors: | Zhang Hui-Min Zhou Xian-Liang Hui Ru-Tai Li Nan-Qiang Liu De-Pei |
| Affiliation: | a Department of Chemistry, Peking University, Beijing 100871, People's Republic of China b Cardiovascular Institute and Fu Wai Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100037, People's Republic of China |
| Abstract: | The self-assembled electrode with the homocysteine monolayer (Hcy/Au) has been characterized by infrared spectroscopy and ac impedance spectroscopy in electrolyte. The Hcy/Au electrode is demonstrated to promote the electrochemical response of epinephrine (E) by cyclic voltammetry. A pair of well-defined redox waves was obtained and the calculated standard rate constant (ks) is 2.1×10−2 cm s−1 at the self-assembled electrode. The reduction peak of E can be used to determine the concentration of E in presence of ascorbic acid (AA) owing to the Hcy/Au also promoting the electrochemical oxidation of AA. |
| Keywords: | Epinephrine Self-assembled electrode Cyclic voltammetry FT-IR spectroscopy |
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