The long-term observations of the dynamics of ⁹⁰Sr and ¹³⁷Cs concentration, as well as the physicochemical forms of these radionuclides in 10 species of higher aquatic plants during the vegetation period of Glyboke Lake in the Chornobyl Exclusion Zone were presented. The accumulation of radionuclides depends on the influence of environmental factors and species characteristics of the studied plants. It has been shown that the accumulation of ⁹⁰Sr and ¹³⁷Cs by plants mainly occurs in accordance with the physiological stages of their development. Under conditions of intensive growth and accumulation of biomass in the juvenile period, plants disproportionately uptake ¹³⁷Cs from the environment; during the seed ripening period at the stage of aging, plants mainly accumulate ⁹⁰Sr, as evidenced by the non-correlation of this radionuclide concentration in water and plants in the considered periods. The specific features of the accumulation of radionuclides by plants were studied by the method of analysis of physicochemical forms, which consists in the sequential extraction of radionuclides from plant preparations and makes it possible to quantitatively investigate potentially exchange and fixed forms. The analysis of physicochemical forms confirmed the patterns of seasonal distribution of radionuclides, as well as their accumulation in cells, tissues and in the whole plant obtained from long-term observations.

提出了在乔诺贝利禁区Glyboke湖植被期，对10种高等水生植物中⁹⁰ Sr和¹³⁷ Cs浓度的动态以及这些放射性核素的理化形式进行的长期观察。放射性核素的积累取决于所研究植物的环境因素和物种特征的影响。已经表明，植物对⁹⁰ Sr和¹³⁷ Cs的积累主要根据其发育的生理阶段而发生。在幼年期密集生长和生物质积累的条件下，植物的摄取不成比例¹³⁷来自环境的Cs；在衰老阶段的种子成熟期，植物主要积累⁹⁰ Sr，这在考虑的时期内在水中和植物中这种放射性核素浓度的不相关性证明了这一点。通过理化形式分析方法研究了植物体内放射性核素积累的具体特征，该方法包括从植物制剂中依次提取放射性核素，从而有可能定量研究潜在的交换形式和固定形式。理化形式的分析证实了放射性核素的季节性分布模式，以及它们在细胞，组织和整个植物中的积累，这些都是通过长期观察获得的。