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Electrochemical Determination of Sulfide at High Temperatures via Its Electrochemically Initiated Reaction with Diethyl‐ p ‐phenylenediamine in Dimethylformamide
Author(s) -
Wildgoose Gregory G.,
Giovanelli Debora,
Klymenko Oleksiy V.,
Lawrence Nathan S.,
Jiang Li,
Jones Timothy G. J.,
Compton Richard G.
Publication year - 2004
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200302859
Subject(s) - electrochemistry , dimethylformamide , sulfide , chemistry , detection limit , inorganic chemistry , glassy carbon , platinum , redox , iron sulfide , limiting , electrode , analytical chemistry (journal) , cyclic voltammetry , sulfur , organic chemistry , chromatography , catalysis , solvent , mechanical engineering , engineering
The electrochemical oxidation of DEPD proceeds via an EC rev ECE mechanism in dimethylformamide. It has been investigated at elevated temperatures up to 130 °C at both micro and macro platinum and glassy carbon electrodes. Kinetic and thermodynamic parameters for the reaction process have been calculated for each temperature. Further, the voltammetric response of DEPD shows enhanced limiting currents in the presence of sulfide. The analytical utility of the approach has been investigated with linear range from 50 to 850 μM sulfide concentration observed and a corresponding limit of detection of 20 μM achievable at temperatures of 70 °C.