This is the first report in the literature that deals with the detection of folic acid at a bare carbon surface. The range of linearity and the detection limit compares favourably with that reported by Jacobson and Bjomsen [19] who employed ac
polarography. Although a much lower detection limit was obtained by Fernandez et al. [23], who utilised the adsorptive stripping process of folic acid at a mercury electrode, this approach has the possible advantages of being used as a detection