Environmental Chemistry: comparison of availability of copper(II) complexes with organic ligands to bacterial cells and to chitin

摘要

Bacterial cells or chitin were exposed to solutions with 100 μM total but only 5 μM free copper, due to the presence of a proper concentration of proline, lysine, cysteine, or ethylenediamine tetraacetate (EDTA). The influence of the nature and concentration of the particles and soluble ligands, on the sorption and on the desorption of the copper, at pH6.50 and 25.0 deg. C, was investigated. The metal sorbed by the particles and that left in the solution were measured by atomic absorption spectrometry, after different periods of contact between particles and solution.