Electrochemical determination of sulfide at high temperatures via its electrochemically initiated reaction with diethyl-p-phenylenediamine in dimethylformamide

Gregory G. Wildgoose, Debora Giovanelli, Oleksiy V. Klymenko, Nathan S. Lawrence, Li Jiang, Timothy G. J. Jones, Richard G. Compton

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Abstract

The electrochem. oxidn. of DEPD proceeds via an ECrevECE mechanism in DMF. It has been investigated at elevated temps. up to 130°C at both micro and macro platinum and glassy carbon electrodes. Kinetic and thermodn. parameters for the reaction process have been calcd. for each temp. Further, the voltammetric response of DEPD shows enhanced limiting currents in the presence of sulfide. The anal. utility of the approach has been investigated with linear range from 50 to 850 µM sulfide concn. obsd. and a corresponding limit of detection of 20 µM achievable at temps. of 70°C. [on SciFinder(R)]
Original languageEnglish
Pages (from-to)337-344
Number of pages8
JournalElectroanalysis
Volume16
DOIs
Publication statusPublished - 2004

Keywords

  • sulfide electrochem detn diethylphenylenediamine reaction

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