Abstract
It has been found in the present work that reduced form ascorbate coexisting with nitrite cannot be accurately estimated by any routine colorimetric or titrimetric method.
Therefore, by using a chromiun (III) -glycine complex solution, just the same electrolytic solution as used for the determination of nitrite, a modified polarographic method has been developed for determining reduced form ascorbate.
Since reliable finding for reduced form ascorbate could be obtained by this modified polarographic method at the pH range from 6.0 to 7.0 in the presence of nitrite, this method is applicable to the determination of reduced form ascorbate coexisting with nitrite.
