The diffusion of Mn2+ ions in CoSO4, NiSO4 and ZnSO4 containing 1% agar gel
as well as that of MnSO4 in 1% agar gel was studied at 25 degreesC. The di
ffusion coefficients at selected concentrations were determined by the zone
diffusion technique and by measuring the concentration of diffusing ions u
sing neutron activation analysis.