Bioaccumulation of gamma emitting radionuclides in Polysiphonia fucoides.
作者： Tamara Zalewska
DOI: 10.1007/S10967-013-2794-2
关键词: Cesium Isotopes 、 Seawater 、 Polysiphonia fucoides 、 Chemistry 、 Radiochemistry 、 Isotope 、 Red algae 、 Radioactive Activity 、 Radionuclide 、 Bioaccumulation
摘要: The article presents the results of a study on bioaccumulation abilities Polysiphonia fucoides, red algae specific to southern Baltic Sea, towards (of) gamma emitting isotopes. A laboratory experiment was carried out determine changes in activities some isotopes—54Mn, 57Co, 65Zn, 110mAg,113Sn, 134Cs, 137Cs and 241Am—occurring P. fucoides exposed seawater medium containing these isotopes over course 1 month. All analyzed showed greatest increase radioactive activity plant tissue first 24 h exposure. temporary concentration factors cesium were increasing linearly during from 114 274 case 137Cs, 144 351 134Cs. level initial factor proved be independent isotope it took lowest (125 dm3 kg−1) among studied In mixture isotopes, linear relation between individual its established after day exposure; ranged 767 874 kg−1. Having reached maximal level, statistically significant decline radioactivity concentrations five observed. half-life biological removal at: 3.8 days 54Mn, 4 days—57Co, days—60Co, 4.2 days—137Cs 241Am—3.5 days.
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