The extent of the binding by alginate
increased as metal concentration increased. At concentrations of 10
and 50 µg Pb/L, 0.7 and 5 mg Pb, respectively, was bound per g
alginic acid. At concentrations of 0.01, 0.1, 5 and 10 µg Cd/L 0.09,
0.4, 2.1 and 7.5 mg Cd, respectively, were bound to 1 g alginic acid
(Rose & Quarterman, 1987).