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    STUDIA CHEMIA - Issue no. 4 / 2013  
         
  Article:   ON THE OXIDATION OF GLUTATHIONE BY CHROMIUM (VI), IN AQUEOUS SOLUTIONS OF PERCHLORIC ACID.

Authors:  DANA-MARIA SABOU, IOAN BÂLDEA. 		 
       
         
  Abstract:   The oxidation of glutathione by chromium(VI) has been studied under pseudo-first order conditions at 293 K, in mildly acidic environment of controlled ionic strength (0.5 M, NaClO4). The process was monitored spectrophotometrically and showed evidence of two stages. Both stages have been evaluated kinetically, the reaction orders were found and some of the rate constants were computed. The involvement of paramagnetic intermediates has been investigated. In agreement with the experimental findings, a reaction mechanism has been suggested, that showed changing features under the range of acidities employed. 

Keywords: redox, chromium VI, glutathione, kinetics
 
         
     
         
         
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