POLAROGRAPHIC STUDIES OF MODIFIED ACTIVAT ED CARBON SUSPENSIONS IN AQUEOUS, ACETONITRILE AND METHANOL SOLUTIONS

Polarographic measurements of the suspension of activated carbon - non modified, with highly increased quantity of oxygen chemically bound t o the surface by oxidation with nitric acid and oxidized and subsequen tly heated out in the stream of ammonia - have been carried out in aqu eous, acetonitrile, methanol and mixed water-methanol LiClO4 solutions , Investigations were carried out in non stirred and non deoxidized so lutions. Characteristic current maxima have been obtained on polarogra phic curves and the relation between the height of those maxima and th e degree of oxidation of the carbon surface has been proved. It has be en found out that maxima were better visible and reproducible in aqueo us solutions.