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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dementyev, Dmitry, Bolsunovsky, Alexander
Заглавие : A long-term study of radionuclide concentrations in mushrooms in the 30-km zone around the Mining-and-Chemical Combine (Russia)
Колич.характеристики :10 с
Место публикации : Isot. Environ. Health Stud.: TAYLOR & FRANCIS LTD. - ISSN 1025-6016, DOI 10.1080/10256016.2020.1718124. - ISSN 1477-2639(eISSN)
Примечания : Cited References:25
Предметные рубрики: CS-137
FOREST
RADIOCESIUM
FUNGI
ACCUMULATION
ACCIDENT
Аннотация: Cs-137 concentrations were measured in mushrooms in an area affected by radioactive discharges of the Mining-and-Chemical Combine (MCC) (Rosatom, Russia) in 2002-2017. The sources of radionuclides in the study sites were global fallouts and waterborne and airborne radioactive discharges of the MCC. The mushroom species Suillus granulatus and S. luteus showed the highest Cs-137 concentrations (140-7100 Bq kg(-1)) for this area. Over the entire monitoring period, no significant change in Cs-137 concentration was observed in the Suillus spp. samples collected from the sites with the aerial deposition of radionuclides. In the floodplain site with the radionuclide deposition from water and air, a significant decrease in the average Cs-137 concentration was observed in the period between 2004 and 2017: a three-fold decrease in Suillus spp. and a nine-fold decrease in Lactarius deliciosus. The effective half-lives of Cs-137 in fruiting bodies of the mushrooms L. deliciosus and Suillus spp. in this site were 3.6 +/- 0.6 and 9.2 +/- 2.7 years, respectively.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovskii A.Y., Goryachenkova T.A., Cherkezyan V.O., Myasoedov B.F.
Заглавие : Hot particles in the Krasnoyarsk Krai
Место публикации : Radiochemistry: MAIK NAUKA/INTERPERIODICA, 1998. - Vol. 40, Is. 3. - С. 278-281. - 4. - ISSN 1066-3622
Примечания : Cited References: 22
Предметные рубрики: CHERNOBYL
ACCIDENT
RADIONUCLIDES
Аннотация: The radionuclidic composition of several high-level hot particles (PIP) found during field work in the region of the Atamanovskii island of the Yenisei river just near the Krasnoyarsk Mining Chemical Plant (MCP) was determined. The activity ratios of Pu and Cs isotopes in these particles revealed their reactor origin. The age of HPs was estimated in terms of one possible pathway of their formation.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bolsunovsky A.Y., Tcherkezian V.O.
Заглавие : Hot particles of the Yenisei River flood plain, Russia
Колич.характеристики :8 с
Место публикации : J. Environ. Radioact.: ELSEVIER SCI LTD, 2001. - Vol. 57, Is. 3. - P167-174. - ISSN 0265-931X, DOI 10.1016/S0265-931X(01)00021-2
Примечания : Cited References: 12
Предметные рубрики: CONTAMINATION
CHERNOBYL
ACCIDENT
Ключевые слова (''Своб.индексиров.''): hot particles--yenisei river--plutonium complex--caesium and plutonium isotopes--dating of particles
Аннотация: Some high-activity hot particles (HP) were found in the flood plain of the Yenisei River, near the Krasnoyarsk Mining-and-Chemical Combine (MCC). and their radionuclide compositions were determined. The ratios of plutonium and caesium isotopes in the particles are indicative of their reactor origin. The Cs-137 activity of the particles amounts to 29,200 kBq/particle, which is higher than the corresponding activities of the fuel particles that formed as a result of the accident at the Chernobyl NPP, All the particles have been divided into two major groups according to the Cs-137/Cs-134 ratio: in the first group, the Cs-137/Cs-134 ratio is more than or equal to 3000, and in the second the Cs-137/Cs-134 ratio is less than or equal to 1000. The particles of the first and the second groups were preliminarily estimated to be formed 30 and 20 years ago, which suggests that there must have been at least two accidents at the MCC reactors, with part of the fuel released into the Yenisei River. (C) 2001 Elsevier Science Ltd. All rights reserved.
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