The binding affinity (conditional stability constant) of U at the cell
surface of C. demersum (log K=6.25 at pH 6.2 and 20 mg CaCO3 L−1
hardness with calculated UO2
2+=1.3%) is consistent with that of two
other freshwater plants; Chlorella sp. (log K=6.48 (re-calculated in
the present study) at pH 5.7 and 4 mg CaCO3 L−1 hardness with calculated
UO2
2+=12%