Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of Russia
Radioecological features of natural environments of the Sochi River valley, one of the largest rivers of the Main Caucasian Range and the Black Sea coast of Russia were studied. Alluvial soils, mosses, and river waters were the subject of investigations. Peculiarities of Th and U behavior (their con...
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| Format: | Article |
| Language: | Russian |
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Institute of Volcanology and Seismology FEB RAS
2022-10-01
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| Series: | Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле |
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| Online Access: | http://www.kscnet.ru/journal/kraesc/article/view/733 |
| _version_ | 1798021261061783552 |
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| author | Zakharikhina L.V. |
| author_facet | Zakharikhina L.V. |
| author_sort | Zakharikhina L.V. |
| collection | DOAJ |
| description | Radioecological features of natural environments of the Sochi River valley, one of the largest rivers of the Main Caucasian Range and the Black Sea coast of Russia were studied. Alluvial soils, mosses, and river waters were the subject of investigations. Peculiarities of Th and U behavior (their contents were determined by quantitative ICP method) in conditions of existence of alkaline geochemical barriers — calcium barrier formed at the junction of neutral argillites and alkaline marl, and sodium barrier in the river mouth at the contact of river water with sea water were established. The calcium barrier results in lower Th and U concentrations in river waters and higher concentrations of radioactive elements in soils and mosses. Alkaline sodium barrier causes increase of Th and U concentration in river waters, decrease of Th and U concentration in soils and active sorption of elements by mosses. On the whole, the radioecological state of the Sochi River valley is favorable. The level of gamma-radiation exposure dose rate near the surface is lower than the natural level of this parameter for the open mountain territories of the middle belt of Russia. Bottom sediments of the river are notable for low values of specific activity of natural radionuclides 226Ra, 228Ra, 224Ra, 232Th and 40K. |
| first_indexed | 2024-04-11T17:10:49Z |
| format | Article |
| id | doaj.art-eaf33ab2b54d44359ce65f78dc3eeaf9 |
| institution | Directory Open Access Journal |
| issn | 1816-5524 1816-5532 |
| language | Russian |
| last_indexed | 2024-04-11T17:10:49Z |
| publishDate | 2022-10-01 |
| publisher | Institute of Volcanology and Seismology FEB RAS |
| record_format | Article |
| series | Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле |
| spelling | doaj.art-eaf33ab2b54d44359ce65f78dc3eeaf92022-12-22T04:12:54ZrusInstitute of Volcanology and Seismology FEB RASВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле1816-55241816-55322022-10-01553879510.31431/1816-5524-2022-3-55-87-95735Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of RussiaZakharikhina L.V.0Federal Research Center for Subtropical Studies of the Russian Academy of Sciences, Sochi, RussiaRadioecological features of natural environments of the Sochi River valley, one of the largest rivers of the Main Caucasian Range and the Black Sea coast of Russia were studied. Alluvial soils, mosses, and river waters were the subject of investigations. Peculiarities of Th and U behavior (their contents were determined by quantitative ICP method) in conditions of existence of alkaline geochemical barriers — calcium barrier formed at the junction of neutral argillites and alkaline marl, and sodium barrier in the river mouth at the contact of river water with sea water were established. The calcium barrier results in lower Th and U concentrations in river waters and higher concentrations of radioactive elements in soils and mosses. Alkaline sodium barrier causes increase of Th and U concentration in river waters, decrease of Th and U concentration in soils and active sorption of elements by mosses. On the whole, the radioecological state of the Sochi River valley is favorable. The level of gamma-radiation exposure dose rate near the surface is lower than the natural level of this parameter for the open mountain territories of the middle belt of Russia. Bottom sediments of the river are notable for low values of specific activity of natural radionuclides 226Ra, 228Ra, 224Ra, 232Th and 40K.http://www.kscnet.ru/journal/kraesc/article/view/733radioecologysoilsriver waterplantsthoriumuranium |
| spellingShingle | Zakharikhina L.V. Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of Russia Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле radioecology soils river water plants thorium uranium |
| title | Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of Russia |
| title_full | Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of Russia |
| title_fullStr | Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of Russia |
| title_full_unstemmed | Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of Russia |
| title_short | Geochemical alkaline barriers determining radioecological conditions in the Sochi river valley of the Black Sea Coast of Russia |
| title_sort | geochemical alkaline barriers determining radioecological conditions in the sochi river valley of the black sea coast of russia |
| topic | radioecology soils river water plants thorium uranium |
| url | http://www.kscnet.ru/journal/kraesc/article/view/733 |
| work_keys_str_mv | AT zakharikhinalv geochemicalalkalinebarriersdeterminingradioecologicalconditionsinthesochirivervalleyoftheblackseacoastofrussia |