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Aerosol activity measurements associated with the burning of peat materials (evacuation zone of the Bryansk Region)статья
- Авторы: Kuzmenkova N.V., Rozhkova A.K., Vorobyova T.A.
- Журнал: Journal of Environmental Radioactivity
- Том: 216
- Год издания: 2020
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- DOI: 10.1016/j.jenvrad.2020.106184
- Аннотация: In April and August 2015, a massive fire occurred in the Chernobyl Exclusion zone. The fire spread to neighboringareas due to the prevailing strong winds. In this paper, we analyze the peat fires as a unique source ofradioactive contamination. After an expedition directly to the peat fire site (the evacuation zone of the Bryanskregion), we collected a number of aerosol samples. We came to the conclusion that peat fires cannot be the reasonfor radioactive particle transport in the Bryansk region as well as in the Chernobyl evacuation zone. During thepeat fire, radioactive contamination was not transferred by aerosols beyond 500 m. The 137Cs concentration inthe aerosol filters varied between 0.55 and 0.64 Bq/m3, and that at the same distance from the fire seat and peatedge was 4.4∙10 3 Bq/m3; the activity values in the peat bog and in the nearest inhabited locality did not exceedthe background values. Strontium-90 was not found in aerosol samples. The soil-to-air transport rate of 137Cs was2.7∙10 6. After the Chernobyl accident, the majority of the 137Cs was incorporated into the structure of clayminerals, and these did not change during the peat fire. The mobility of 137Cs in the flight peat material particleswas established. To confirm the territory status of the evacuation zone, we also collected some food samples.Berries and mushrooms consumed at the assumed rate for dose estimation would result in doses that exceed thepublic dose limit by approximately a factor of five.
- Добавил в систему: Кузьменкова Наталья Викторовна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | JER_2020.pdf | 1,5 МБ | 7 февраля 2020 [KuzmenkovaNV] |