| Abstract: | To estimate the applicability of yeastSaccharomyces cerevisiae as a radioisotope accumulator, biosorption of 18 radionuclides (isotopes of Be, Na, Sc, V, Cr, Mn, Fe, Co, Zn, As, Se, Rb,
Sr, Y, Zr, Tc, Ru, and Rh) by the cells was tested using a multitracer technique. This technique enables us to examine the
uptake of various elements under an identical condition. We showed that the yeast has ability to take up radioactive tracers
of Be, Sc, V, Cr, Mn, Fe, Co, Zn, As, Se, Sr, Y, Zr, Ru, and Rh from an aqueous environment. Tracers of Be, Sc, Mn, Co, Zn,
Se, Sr, Y, and Zr were distributed in both cell walls and other cell parts. Moreover, tracers of Sc, Mn, Co, Zn, Se, Sr, and
Y were present as soluble and insoluble forms, and most of the Be and Zr were present as an insoluble form in the cells. |
