Fig. 9.

Absorption spectra of extractive substances from the biomass of cells D.v-Cu.S (A) and D.v-Cu.R (B), which were obtained after supplementary addition of copper sulfate to them at a final concentration of 7 g/l and subsequent sedimentation of the cell biomass by centrifugation at 15,000 g and electrical conductivity of the aquatic medium after sedimentation of the cell biomass components D.v-Cu.S (1) and D.v-Cu.R (2), as well as the electrical conductivity of a solution of copper sulfate (3) at a concentration of 7 g/l (C). Typical results for this series of experiments are presented.