Fig. 2. Lead fractions in clay after sorption in 0.05 M CaCl2 medium: (a) 1-d sorption period, and (b) 65-d sorption period.
Fig. 2. Lead fractions in clay after sorption in 0.05 M CaCl2 medium: (a) 1-d sorption period, and (b) 65-d sorption period.