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Citation: LIU Bin, SUN Xiang-Ying, XU Jin-Rui. Preparation and Application of Cyanoethylchitosan Modified Electrode[J]. Chinese Journal of Applied Chemistry, ;2003, 20(10): 963-967. shu

Preparation and Application of Cyanoethylchitosan Modified Electrode

1.
College of Materials Science and Engineering, Huaqiao University, Quanzhou 362011

Corresponding author: LIU Bin,
Received Date: 22 January 2003
Available Online: 15 July 2003
Fund Project: 福建省科委国际合作基金资助项目(99-I-3) (99-I-3)

The cyanoethylchitosan was prepared to modify the glass carbon electrode through covalent-bond reaction. The cyanoethylchitosan has higher adsorptive capacity and better selectivity for Cu²⁺. The selectivity of cyanoethylchitosan modified electrode for Cu²⁺ has been raised significantly, and the common ions didn't interfere with the determination of Cu²⁺. The sensitivity of modified electrode for Cu²⁺ is three times that of the unmodified glass carbon in 0.1 mol/L KNO₃ solution(pH=3.4). The anodic stripping peak current is linear with Cu²⁺ concentration in the range of 1.0×10^-8~1.0×10^-6 g/mL.
- cyanoethylchitosan,
- copper ion,
- anodic stripping voltammetry,
- modified electrode
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