EDTA

DTPA

0.1 mM

0.5 mM

1 mM

0.01 mM

0.05 mM

Eluted Am (%)

72 ± 4

71 ± 7

95 ± 6

70 ± 7

81 ± 8

Eluted U (%)

2 ± 2

25 ± 3

49 ± 5

1 ± 1

3 ± 2