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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">radhyd</journal-id><journal-title-group><journal-title xml:lang="ru">Радиационная гигиена</journal-title><trans-title-group xml:lang="en"><trans-title>Radiatsionnaya Gygiena = Radiation Hygiene</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-426X</issn><issn pub-type="epub">2409-9082</issn><publisher><publisher-name>NIIRG</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21514/1998-426X-2020-13-3-25-37</article-id><article-id custom-type="elpub" pub-id-type="custom">radhyd-729</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Научные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Scientific articles</subject></subj-group></article-categories><title-group><article-title>Оценка современных уровней 241Am и 137Сs в почве, продуктах питания, доз внутреннего облучения жителей населенных пунктов, прилегающих к зоне отселения Чернобыльской АЭС (на примере Брагинского района Гомельской области Беларуси)</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of the current levels of 241Am и 137Сs in soils and foodstuff, as well as of public internal exposure to ionizing radiation in populated areas adjacent to the Chernobyl NPP exclusion zone (case study: the Bragin district of the Gomel region, Belarus)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нилова</surname><given-names>Е. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Nilova</surname><given-names>E. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нилова Екатерина Константиновна – кандидат биологических наук, старший научный сотрудник</p><p>Минск</p></bio><bio xml:lang="en"><p>Ekaterina K. Nilova – Candidate of Biological Sciences, Senior Researcher</p><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бортновский</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Bortnovsky</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бортновский Владимир Николаевич – кандидат медицинских наук, доцент, заведующий кафедрой общей гигиены, экологии и радиационной медицины</p><p>Гомель</p></bio><bio xml:lang="en"><p>Vladimir N. Bortnovsky – Candidate of Medical Sciences, Associate Professor, Head of the Department of General Hygiene, Ecology and Radiation Medicine</p><p>Gomel</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тагай</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tagai</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тагай Светлана Алексеевна – научный сотрудник</p><p>246000, Беларусь, Гомель, ул. Федюнинского, д. 16</p></bio><bio xml:lang="en"><p>Svetlana A. Tagai – Researcher</p><p>Fediuninsky Str., 16, Gomel, 246000, Belarus</p></bio><email xlink:type="simple">lanabuz@tut.by</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дударева</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dudareva</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дударева Наталья Владимировна – научный сотрудник</p><p>Гомель</p></bio><bio xml:lang="en"><p>Natalia V. Dudareva – Researcher,</p><p>Gomel</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никитин</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitin</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Никитин Александр Николаевич – кандидат сельскохозяйственных наук, заведующий лабораторией радиоэкологии</p><p>Гомель</p></bio><bio xml:lang="en"><p>Alexander N. Nikitin– Candidate of Agricultural Sciences, Head of the Laboratory of Radioecology</p><p>Gomel</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Центр по ядерной и радиационной безопасности, Министерство по чрезвычайным ситуациям Республики Беларусь</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Center for Nuclear and Radiation Safety of the Ministry for Emergency Situations of the Republic of Belarus</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Гомельский государственный медицинский университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Gomel State Medical University</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт радиобиологии, Национальная академия наук Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Institute of Radiobiology of the National Academy of Sciences of Belarus</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>02</day><month>10</month><year>2020</year></pub-date><volume>13</volume><issue>3</issue><fpage>25</fpage><lpage>37</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нилова Е.К., Бортновский В.Н., Тагай С.А., Дударева Н.В., Никитин А.Н., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Нилова Е.К., Бортновский В.Н., Тагай С.А., Дударева Н.В., Никитин А.Н.</copyright-holder><copyright-holder xml:lang="en">Nilova E.K., Bortnovsky V.N., Tagai S.A., Dudareva N.V., Nikitin A.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.radhyg.ru/jour/article/view/729">https://www.radhyg.ru/jour/article/view/729</self-uri><abstract><p>Статья является составной частью цикла исследований по сравнительной оценке современных уровней содержания  241Am и 137Cs в почве и продуктах питания местного производства, а также доз внутреннего облучения жителей населенных пунктов, прилегающих к зоне отселения Чернобыльской АЭС. Целью исследований настоящей работы явилась консервативная оценка ожидаемой годовой дозы внутреннего облучения от  241Am и 137Сs, поступающих в организм с вдыхаемым воздухом и продуктами питания местного производства для жителей частных подворий на примере Брагинского района Гомельской области Беларуси. Фактические данные о современных уровнях содержания радионуклидов в почве были получены для 28 населенных пунктов района, в 2 пунктах с максимальными значениями удельной активности  241Am в почве выполнен отбор и анализ содержания радионуклидов в продуктах питания. Определение  241Am в продуктах выполнялось радиохимическим методом с использованием селективных экстракционно-хроматографических смол и альфа- спектрометрического измерения. Определение  241Am в почве и 137Сs в почве и продуктах выполнялось гамма-спектрометрическим методом. В административном центре района – городском поселке (г.п.) Брагин отмечены наибольшие уровни загрязнения  241Am и 137Cs почвы – до 2,8 и 560 кБк/м2 соответственно. Удельная активность  241Am в пробах корне- и клубнеплодов находилась на уровне единиц мБк/кг, а в пробах листовой зелени достигала десятков мБк/кг, при этом содержание  241Am в продуктах было на три порядка величины ниже относительно 137Сs. Результаты оценки показали, что структура ожидаемых доз внутреннего облучения за счет поступления  241Am и 137Сs существенно различается. Максимальная ожидаемая суммарная доза внутреннего облучения 137Сs установлена для жителей Брагина – 1,7 мЗв/год,  241Am – не превышает 0,03 мЗв/год. Максимальные дозы в населенных пунктах района от ингаляционного поступления  241Am варьируют в пределах 0,006–0,033 мЗв/год и превышают на порядок величины дозы от ингаляционного поступления сопутствующего 137Сs (0,0002–0,002 мЗв/год). На современном этапе радиоэкологических последствий катастрофы на ЧАЭС доминирует пероральный путь поступления 137Сs, который может обусловить 93–99% суммарной дозы внутреннего облучения жителей Брагинского района.</p></abstract><trans-abstract xml:lang="en"><p>This paper is part of a research cycle focusing on studying the current levels of  241Am and 137Cs in soils and local foodstuffs of populated areas neighboring the Chernobyl exclusion zone. Our objective was to estimate the maximum annual committed internal doses to individuals of the Bragin-area settlements from inhalation and consumption of locally produced foods. We updated the data on the levels of  241Am and 137Сs in soils of 28 settlements of the district. Specific activity of  241Am in soils in two of the settlements were the highest of all; we took and analyzed samples of local-grown foodstuff.  241Am in food samples was measured via a radiochemical method with the use of selective chromatographic resins and alpha-spectrometry measurement. A gammaspectrometry technique was used to measure  241Am in soil and 137Сs in soil and food samples. The most contaminated by  241Am and 137Cs appeared the soils in the town of Bragin, the administrative center of the district where the respective levels were as high as 2.8 and 560 kBq/m2. Among the analyzed samples, the specific activities of  241Am in root and tuber crops were one-digit values, while the samples of leafy vegetables contained a few tens of mBq/kg of the same radionuclide. That said, however,  241Am concentrations in food samples were lower than those of 137Сs by three orders of magnitude. The results showed an apparent difference between estimated annual committed internal doses to the Bragin residents due to  241Am intake and that resulting from 137Сs with the respective 0.03 and 1.7 mSv/year. The maximum doses to population of the Bragin-district villages from inhalation of  241Am varied from 0.006 to 0.033 mSv/year exceeding the doses from inhaled 137Сs – 0.0002-0.002 mSv/year – by one order of magnitude. The major contribution to the public internal exposure today is 137Сs intake through consumption of contaminated food that produced locally; its contribution is about 93-99% of the total internal dose received by the Bragin-district residents.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>241Am</kwd><kwd>137Cs</kwd><kwd>плотность загрязнения почвы</kwd><kwd>удельная активность</kwd><kwd>население</kwd><kwd>продукты питания</kwd><kwd>ингаляционное поступление</kwd><kwd>доза внутреннего облучения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>241Am</kwd><kwd>137Cs</kwd><kwd>deposition density</kwd><kwd>specific activity</kwd><kwd>population</kwd><kwd>foodstuff</kwd><kwd>inhalation</kwd><kwd>internal exposure</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">International Atomic Energy Agency (IAEA) The International Chernobyl Project, Technical report: Assessment of radiological consequences and evaluation of protective measures: Report by an International Advisory Committee. 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