Polypyrrole-dodecyl sulphate electrode as a microsensor for electroinactive cations in flow-injection analysis and ion chromatography
✍ Scribed by R. Carabias Martínez; F. Becerro Domínguez; F. Martín González; J. Hernández Méndez; R. Córdova Orellana
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 585 KB
- Volume
- 279
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
An electrochemical sensor based on the incorporation of dodecyl sulphate (DDS) into polypyrrole (Ppy) by electropolymerization of pyrrole in the presence of surfactant is described . The resulting polymer film proved to be useful for the detection of non-electroactive cations (Li', Na' and K' were tested). The physicochemical characteristics of the Ppy-DDS electrode and its response against the alkali metal ions in cyclic voltammetry were studied . Application of this electrode as a sensor in flow-injection analysis and in high-performance ion chromatography is demonstrated. The electrode remains stable for several weeks with no evidence of chemical or mechanical damage.