Abstract
The interaction between a unialgal species (<i>Stichococcus bacillaris</i>) and cadmium in the presence of several different solutes was investigated by <sup>113</sup>Cd NMR. The interaction between the algae and cadmium was very strong, and the Cd/algae complex has an average formation constant of 2.8 × 10<sup>5</sup>. Upon addition of different solutes into the algae suspension, two results were obtained: in some cases the cadmium in the Cd/algae biomass was removed, and in other situations water molecules around the bound cadmium were replaced by the added ligands. When the Cd/algae biomass was suspended in acetic acid or sodium acetate buffer solutions, some of the bound cadmium was released, but only one resonance was observed for both the Cd/algae complex and the free cadmium in the solution. This chemical shift similarity indicates that the predominant functional group on the cell wall of <i>S. bacillaris</i> is carboxylate. Gold(III) was also found to strongly interact with <i>S. bacillaris.</i>
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription