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A PVC/TTF‐TCNQ Composite Electrode for Use as a Detector in Flow Injection Analysis
Author(s) -
Cano Manuel,
Palenzuela Beatriz,
RodríguezAmaro Rafael
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200603582
Subject(s) - electrode , materials science , polyvinyl chloride , amperometry , ascorbic acid , tetracyanoquinodimethane , graphite , working electrode , analytical chemistry (journal) , composite number , composite material , electrochemistry , chemistry , chromatography , organic chemistry , food science , molecule
A new polyvinyl chloride (PVC)/tetrathiafulvalene‐tetracyanoquinodimethane (TTF‐TCNQ) composite electrode was prepared and tested for electroanalytical performance. Different PVC/TTF‐TCNQ–graphite proportions were used in order to obtain the best possible detector for accommodation in a wall‐jet electrochemical cell of use in flow injection analysis. A PVC/TTF‐TCNQ w/w ratio of 1/10 provided the best results in terms of sensitivity, coefficients of variation and mechanical resistance. The voltammetric and flow‐injection amperometric detection responses of the electrode to ascorbic acid (AA) were measured and compared with those of a PVC–graphite electrode. The resulting electrode provided good electrode kinetics with a low background current and a relatively reproducible signal. In addition, the electrode can be readily prepared and its surface readily renewed.