Anion-selective electrodes based on a gold(III)-triisobutylphosphine sulfide complex

Antonio Florido, Leonidas G. Bachas, Manuel Valiente, Isabel Villaescusa

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39 Citations (Scopus)


Ion-selective electrodes using poly(vinyl chloride) membranes impregnated with a gold(III)-triisobutylphosphine sulfide complex are described. These electrodes were characterized in both conventional and flow-through tubular configurations. The response of the electrodes was Nernstian for thiocyanate and tetrachloroaurate(III) and the detection limit was 1.1 × 10-6 mol dm-3. Flow-through tubular electrodes were used as potentiometric detectors in flow-injection analysis, resulting in a reproducible (peak heights within ± 1 mV for three repeated injections at a given concentration level) and rapid (sample throughputs around 80 h-1) technique for the determination of both anions.
Original languageEnglish
Pages (from-to)2421-2425
JournalThe Analyst
Issue number11
Publication statusPublished - 1 Dec 1994


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