Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.3390/environments9040051

Ключевые слова: dose-forming effects, living organisms, tritium

Аннотация: Tritium is a byproduct of many radiochemical reactions in the nuclear industry, and its effects on aquatic organisms, particularly low-dose effects, deserve special attention. The low-dose effects of tritium on aquatic microbiota have been intensively studied using luminous marine bacteria as model microorganisms. Low-dose physiological activation has been demonstrated and explained by the signaling role of reactive oxygen species through the “bystander effect” in bacterial suspensions. The activation of microbial functions in natural reservoirs by low tritium concentrations can cause unpredictable changes in food chains and imbalances in the natural equilibrium. The incorporation of tritium from the free form into organically bound compounds mainly occurs in the dark and at a temperature of 25◦ C. When tritium is ingested by marine animals, up to 56% of tritium is accumulated in the muscle tissue and up to 36% in the liver. About 50% of tritium in the liver is bound in non-exchangeable forms. Human ingestion of water and food products contaminated with background levels of tritium does not significantly contribute to the total dose load on the human body. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Журнал: Environments - MDPI

Выпуск журнала: Vol. 9, Is. 4

Номера страниц: 51

ISSN журнала: 20763298

Издатель: MDPI

• Bondareva L. (F.F. Erisman Federal Scientific Center of Hygiene, Moscow, 141014, Russian Federation)
• Kudryasheva N. (Institute of Biophysics, Federal Research Center Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation, Biophysics Department, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
• Tananaev I. (FRC Kola Science Center RAS, Apatity, 184209, Russian Federation)

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