Fig. 7.

Observations of column bleed-through (a) and evaporative dry down products (b–c) for experiments using 1 mL and 3 mL of AG 1-X8 resin, in which the 1 M HF dissolved sample load is followed by washes of 9 M HCl. These observations suggest that the exchange capacity of 1 mL of resin was exceeded for the sample load (~33 mg of a U–Nb sample).