Ion-selective carbon-paste electrodes for halides and silver(I) ions


Mesaric, S. and Dahmen, E.A.M.F. (1973) Ion-selective carbon-paste electrodes for halides and silver(I) ions. Analytica Chimica Acta, 64 (3). pp. 431-438. ISSN 0003-2670

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Abstract:The behaviour of a simple type of ion-selective electrode for halogens and silver has been studied. The electrode consists of a plastic body filled with carbon paste, the surface of which can be easily renewed. The paste composition is based on carbon-nujol (5:1, w/v) or carbon-paraffin wax (3:1,w/w) containing a prepared mixture of silver halide-silver sulphide (1–30%). The electrodes have low ohmic resistance and show a rapid Nernstian response (within 2–5 mV) for halide and silver ions down to 5·10-5 M chloride, 1·10-5 M bromide and 5·10-7 M iodide with the respective electrodes. Ions forming very stable complexes with halide or silver and those having strong oxidizing or reducing action interfere.
Item Type:Article
Copyright:© 1973 Elsevier Science
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