Journal
TALANTA
Volume 61, Issue 3, Pages 411-416Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0039-9140(03)00302-3
Keywords
carbon nanotubes; nafion; 4-aminophenol; determination; modified electrode
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A single-wall carbon nanotubes (SWNT)-Nafion film coated glassy carbon electrode (GCE) was described for the determination of 4-aminophenol. In pH 3.0 sodium citrate-HCl buffer, the oxidation peak current of 4-aminophenol increases greatly at the SWNT-Nafion film coated GCE in contrast to that at both bare GCE and Nafion-film coated GCE. Moreover, the oxidation peak potential shifts to more negative potential. All the experimental parameters were optimized for the determination of 4-aminophenol. The oxidation peak current is proportional to the concentration of 4-aminophenol over the range from 5 x 10(-9) to 2 x 10(-6) mol l(-1). The detection limit is 8 x 10(-10) mol l(-1) at 4 min of accumulation. Using the proposed method, 4-aminophenol in water samples was determined. (C) 2003 Elsevier Science B.V. All rights reserved.
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