par Herbo, Claude 
;Sigalla, J.[acques]
Référence Analytica chimica acta, 17, C, page (199-207)
Publication Publié, 1957
;Sigalla, J.[acques] Référence Analytica chimica acta, 17, C, page (199-207)
Publication Publié, 1957
Article révisé par les pairs
| Résumé : | A general method for the determination of oxidising or reducing agents has been investigated It is based on the measurement of the absorption of the spectrum of the 13 - complex Oxidizing agents may be determined by thu oxidation of iodide into I3 -, reducing agents by reduction of I3 -. For a right application of this method one must have (a) all the iodine present in the state of 13 -, (b) the iodine produced by autoxidation of the iodide ion in negligible quantity Theconstants of the chief equilibria in which 13- is involved (equilibrium with I2,I2Br-,I2Cl-, IOH) and the kinetics of the autoxidation of the iodide ion in the presence and the absence of the catalyst Cu+2 have been reinvestigated The acquned information enabled us to determine the general conditions of Applicability of this method and the realization of special analyses, The limit of detection by this method is 2.10-7 gram equivalent of oxidizing or reducing agent per liter when absorptions are measured through a 5 cm layer. © 1957. |
