Abstract
For the purpose of low cost and sensitive electrochemical detection of 17 beta-estradiol (E2), a multi-wall carbon nanotube (MWNT)-Nafion modified electrode was fabricated. The MWNT modified electrode shows enhancement for the anodic peak current of E2 compared with the value obtained using a bare electrode. The anodic peak current measured by square wave voltammetry after 5 min open-circuit accumulation was proportional to the concentration of E2 over the range of 2.5 x 10(-7) to 10 10(-6) M, and a detection limit of 1 x 10(-8) M was obtained.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Biosensing Techniques*
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Carbon / chemistry*
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Chemistry Techniques, Analytical / instrumentation
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Chemistry Techniques, Analytical / methods*
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Electric Conductivity
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Electrochemistry / instrumentation
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Electrochemistry / methods*
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Electrodes*
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Estradiol / analysis*
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Estradiol / chemistry
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Fluorocarbon Polymers / chemistry*
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Hydrogen-Ion Concentration
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Microelectrodes
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Oxygen / metabolism
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Sensitivity and Specificity
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Solutions
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Time Factors
Substances
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Fluorocarbon Polymers
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Solutions
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perfluorosulfonic acid
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Estradiol
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Carbon
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Oxygen