  Influence of metal ions Cu(II), Pb(II), Mg(II) on Spirulina platensis cells
were studied after three times Cs137 gamma irradiation discrete dose (in each
case 20 kGy irradiation dose) and recultivation using UV-VIS spectrometry. It
was shown, that metal ions Mg(II), Pb(II), Cu(II) differ from each other in
terms of interaction efficiency. In particular, Mg(II) ions act as a stimulant
to increase content for Spirulina platensis components after several times with
discrete doses of radiation and cultivation . For Pb (II) ions, the change in
absorption intensity at low concentrations slowly decreases, and then with an
increase in the Pb (II) concentration, the absorption intensity increases for
C-phycocyanin, Ch1a, which implies an increase in the quantity content of
Spirulina platensis constituents. Such effect for Cu(II) not observed.
