Evidence for the involvement of CrII and free radicals as intermediates in the reduction of image by saccharides, alcohols and hydroxyacids

Intermediacy of free radicals and CrII in the reaction of image with a variety of neutral and acid saccharides, hydroxyacids and alyphatic alcohols was demonstrated by the observation of free radical induced polymerization of acrylonitrile and acrylamide, and detection of image when working in O2-saturated solutions and low image. The results are interpreted in terms of a mechanism combining the CrVI → CrIV → CrII and CrVI → CrIV → CrIII pathways.