Electrochemical Determination of Serotonin and the Competitive Adsorption with Dopamine at 5,5-Ditetradecyl-2-(2-trimethylammonioethyl)-1,3-dioxane Bromide Lipid Film Modified by Glassy Carbon Electrode
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- GONG Jing-Ming
- University of Science and Technology of China
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- LIN Xiang-Qin
- University of Science and Technology of China
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Abstract
A novel and effective approach to sensitively determine serotonin, known as 5-hydroxytryptamine (5-HT), has been proposed based on a 5,5-ditetradecyl-2-(2-trimethylammonioethyl)-1,3-dioxane bromide (DTDB) self-assembled lipid bilayer membrane modified glassy carbon electrode (DTDB/GCE). A DTDB/GCE shows the strong electrocatalysis for the oxidation of 5-HT, with the peak potential shifted to less positive value of 0.376 V vs. SCE, and effectively eliminates the interference from ascorbic acid (AA), even in the presence of 100-fold concentration of AA. Differential pulse voltammetry (DPV) gave a linear current for 5-HT from 2.0 × 10-7 to 1.0 × 10-5 M. At the DTDB/GCE, the oxidation of 5-HT was controlled by the adsorption process; for 5-HT coexisting with DA, the competitive adsorption was observed.
Journal
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- Analytical Sciences
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Analytical Sciences 20 (6), 905-909, 2004
The Japan Society for Analytical Chemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390282679234413312
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- NII Article ID
- 130004440950
- 10013104849
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- NII Book ID
- AA10500785
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- COI
- 1:CAS:528:DC%2BD2cXlt1Klt7o%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 6970411
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- PubMed
- 15228108
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed