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Issue 10, 1988
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Chloride chemical sensor based on an organic conducting polypyrrole polymer

Shaojun Dong,  Zhisheng Sun  and  Ziling Lu 

Abstract

The potential response behaviour of a chloride doped polypyrrole (PPy) polymer film electrode to chloride ion in solution has been examined. The effect of the polymerisation conditions on the characteristics of the potential response and response mechanism is discussed. A chloride ion-selective electrode based on a conducting PPy polymer film was prepared with a potential response slope of 58–60 mV (pCl–)–1 and a detection limit of 3.5 × 10–5M of Cl–. The optimum conditions for the preparation of the electrode were: pyrrole (Py), 0.05–0.2 M; LiCl, 0.1–1 M; scan range for electrochemical polymerisation, 0.5–1.2 V; polymerisation time, 10–30 min; and scan rate, 20–100 mV s–1. The chemical sensor has a fast response, a low resistance, is easy to prepare and is not susceptible to poisoning.

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Article type: Paper
DOI: 10.1039/AN9881301525
Citation: Analyst, 1988,113, 1525-1528
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    Chloride chemical sensor based on an organic conducting polypyrrole polymer

    S. Dong, Z. Sun and Z. Lu, Analyst, 1988, 113, 1525
    DOI: 10.1039/AN9881301525

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