Fig. 2

Column matrix separation for major elements and Ba for a 60 mg CaCO3 (freshwater mussel shell) sample. Cerium and La were not fully recovered even after 60 mL, so their % elution values are likely overestimated
Column matrix separation for major elements and Ba for a 60 mg CaCO3 (freshwater mussel shell) sample. Cerium and La were not fully recovered even after 60 mL, so their % elution values are likely overestimated