Journal of Nuclear Fuel Cycle and Environment
Online ISSN : 2186-7135
Print ISSN : 1884-7579
ISSN-L : 1343-4446
Research Article
Experimental study by cyclic voltametry of standard potential of Se (IV) /Se (VI) redox system
Reisuke DoiMikazu Yui
Author information
JOURNAL FREE ACCESS

2009 Volume 16 Issue 1 Pages 35-42

Details
Abstract
  The standard potential of Se (IV) /Se (VI) couple has been obtained by cyclic voltametry in the relatively pure system.
  The formal potentials of the selenium redox reaction have been determined in NaClO4 medium of various ionic strength (I (mol·kg-1) =0.500, 1.00, 1.50, 2.00) at room temperature. These data have been interpreted by using the Specific Ion Interaction Theory to give the following standard potential. In addition, the reactive chemical species have been identified by the dependence of peak potential of oxidation wave on Se concentration. As a result, the following standard potential was determined:
            HSeO3- + H2O = SeO42- + 3H+ + 2e-, E0 = 0.821±0.167 V vs. SHE.
  This standard potential is consistent with the other experimental study which confirmed the existence of Se (VI) in the potential region which is inconsistent with the selected value by OECD/NEA.
Content from these authors
© 2009 Division of Nuclear Fuel Cycle and Environment, Atomic Energy Society of Japan
Previous article Next article
feedback
Top