Fig. 7. Extractograms of sequential extraction of Ca (
), Fe (
), Mn (
), Cu (
), and Zn (•) for SRM 2710 soil. Sample, 0.25 g; chamber volume, 10 mL; subfraction volume, 15 mL. Temperature of Steps II and III were 65 and 55°C, respectively.
Fig. 7. Extractograms of sequential extraction of Ca (), Fe (), Mn (), Cu (), and Zn (•) for SRM 2710 soil. Sample, 0.25 g; chamber volume, 10 mL; subfraction volume, 15 mL. Temperature of Steps II and III were 65 and 55°C, respectively.