This paper presents the results of radioecological monitoring study of natural radionuclide 210Po in 11 lakes located in different regions of the Crimean peninsula. These investigations of the Crimean salt lakes were conducted for the first time in the history. The main objectives of this work were: to determine the features of the 210Ро behavior in the salt lakes ecosystems, as well as calculation of the doses received by the lakes hydrobionts from α-radiation of absorbed 210Po. Concentrations of 210Po in the water, suspended matter, the bottom sediments and biota were determined by radiochemical processing and α-spectroscopy measurements. The concentrations of dissolved 210Po in the water of investigated lakes were in 0.9-327.1 times higher than in the Black Sea closest regions. The highest concentrations of 210Po in water were determined in the lakes of the Kerchenskaya group. These lakes are located on the territory of Crimea where oil is produced. The 210Ро activity concentrations in the bottom sediments from Crimean salt lakes were comparable with those of the Black Sea coastal zone. Concentration ratio (CR) of polonium in suspended matter ranged from 10 to 104 for different lakes. A significant trend in a decrease of CR values of 210Ро for suspended matter with increasing water salinity was revealed. High levels of 210Po accumulation were noted for adult crustacean Artemia spp. (typical inhabitant of the Crimean saline lakes). The CR of 210Po for adult Artemia spp. reached 105 while the CR of this radionuclide by their cysts was significantly lower. The absorbed doses from 210Po α-radiation calculated for adult Artemia spp. were more than 60 times lower than the permissible dose rate for biota (IAEA, 1992).The obtained results will be used to identify the biogeochemical peculiarities in behavior of the main dose-formative radionuclide 210Po, in the water ecosystems with different salinity, including water reservoirs poorly studied in the radioecological aspect and having extreme condition for the existence of lots of species of hydrobionts, such as hypersaline Crimean lakes.

中文翻译：

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210Po在Сrimean盐湖中。

本文介绍了克里米亚半岛不同地区的11个湖泊中天然放射性核素210Po的放射性生态监测研究结果。这些对克里米亚盐湖的调查是历史上第一次。这项工作的主要目的是：确定盐湖生态系统中210Р®行为的特征，以及计算湖泊水生生物从吸收的210Po的α辐射中获得的剂量。通过放射化学处理和α光谱测量来确定水中210Po的浓度，悬浮物，底部沉积物和生物区系。被调查的湖泊水中溶解的210Po的浓度是黑海最近地区的0.9-327.1倍。在Kerchenskaya组的湖泊中确定了水中210Po的最高浓度。这些湖泊位于生产石油的克里米亚地区。克里米亚盐湖底部沉积物中的210Р®浓度与黑海沿岸地区的浓度相当。对于不同的湖泊，suspended在悬浮物中的浓度比（CR）在10到104之间。随着水盐度的增加，悬浮物的CR值降低了210Ро的显着趋势。成人甲壳类Artemia spp的210Po积累水平很高。（克里米亚盐湖的典型居民）。成人Artemia spp的210Po CR。达到105，而该放射性核素的囊肿的CR显着降低。从成年Artemia spp计算的210Poα辐射吸收剂量。比生物区系允许的剂量率低60倍以上（国际原子能机构，1992年）。获得的结果将用于鉴定在盐度不同的水生态系统中主要剂量形成性放射性核素210Po的行为的生物地球化学特性。储水库在放射生态学方面研究不足，并且对于存在许多盐生生物物种（例如高盐克里米亚湖）具有极端条件。