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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-2021-14-4-85-95</article-id><article-id custom-type="elpub" pub-id-type="custom">radhyd-837</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>Радиационные измерения</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Radiation measuRements</subject></subj-group></article-categories><title-group><article-title>Мощность амбиентного эквивалента дозы и плотность загрязнения почвы 137Cs на огородах в населенных пунктах Брянской области России в 2020–2021 гг.</article-title><trans-title-group xml:lang="en"><trans-title>Ambient dose equivalent rate and soil contamination density with 137Cs in kitchen gardens in settlements of the Bryansk region, Russia in 2020–2021</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>Рамзаев</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Ramzaev</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рамзаев Валерий Павлович – кандидат медицинских наук, ведущий научный сотрудник лаборатории внешнего облучения</p><p>197101, Санкт-Петербург, ул. Мира, д. 8</p></bio><bio xml:lang="en"><p>Valery P. Ramzaev – Candidate of Medical Sciences, Leading Researcher of the Laboratory of External Exposure</p><p>Mira Str., 8, Saint-Petersburg, 197101</p></bio><email xlink:type="simple">V.Ramzaev@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Барковский</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Barkovsky</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Барковский Анатолий Николаевич – руководитель Федерального радиологического центра, главный научный сотрудник</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Anatoly N. Barkovsky – Head of the Federal Radiological Centre</p><p>Saint-Petersburg</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>Братилова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bratilova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Братилова Анжелика Анатольевна – научный сотрудник лаборатории внутреннего облучения</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>Anzhelika A. Bratilova – Research Fellow of Internal Radiation Laboratory</p><p>Saint-Petersburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский научно-исследовательский институт радиационной гигиены имени профессора П.В. Рамзаева, Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>26</day><month>12</month><year>2021</year></pub-date><volume>14</volume><issue>4</issue><fpage>85</fpage><lpage>95</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Рамзаев В.П., Барковский А.Н., Братилова А.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Рамзаев В.П., Барковский А.Н., Братилова А.А.</copyright-holder><copyright-holder xml:lang="en">Ramzaev V.P., Barkovsky A.N., Bratilova A.A.</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/837">https://www.radhyg.ru/jour/article/view/837</self-uri><abstract><p>В статье рассмотрены результаты применения метода полевой (in situ) гамма-спектрометрии при проведении массовых мониторинговых измерений мощности амбиентного эквивалента дозы и плотности загрязнения почвы 137Cs на огородных участках, расположенных в зоне радиоактивного загрязнения после аварии на ЧАЭС. В 2020–2021 гг. было обследовано 115 частных подворий в 46 населенных пунктах Брянской области. На время проведения этих обследований официально установленная средняя плотность загрязнения почвы 137Cs в населенных пунктах находились в диапазоне от 27 до 533 кБк/м2 . Измерение полевых спектров проводили с использованием портативного сцинтилляционного гамма-спектрометра-дозиметра. Полученные результаты натурных измерений и последующих вычислений плотности загрязнения почвы 137Cs на огородах хорошо соответствовали официальным данным о средней плотности загрязнения почвы 137Cs в обследованных населенных пунктах. Среднее значение соотношения экспериментальных и официальных данных было равно 1,04. Индивидуальные значения экспериментальных значений отклонялись от соответствующих официальных значений не более чем в 2 раза. Применение метода полевой гамма-спектрометрии позволило раздельно определить мощность амбиентного эквивалента дозы от 137Cs и от природных радионуклидов, а также оценить соответствующие эффективные дозы внешнего облучения человека в случае его пребывания на огородном участке. Значения мощности амбиентного эквивалента дозы варьировали от 13 до 53 нЗв/ч (средняя ± стандартное отклонение = 35 ± 9 нЗв/ч) для природных радионуклидов и от 8 до 432 нЗв/ч (средняя ± стандартное отклонение = 125 ± 91 нЗв/ч) для 137Cs. Значение мощности амбиентного эквивалента дозы от 137Cs, определенное для конкретного огородного участка и нормализованное на плотность загрязнения 137Cs почвы того же самого участка, находилось в диапазоне от 0,41 до 0,84 (нЗв/ч)/(кБк/м2 ) при средней величине 0,55 (нЗв/ч)/(кБк/м2 ). Вычисленные значения эффективной дозы внешнего облучения лежали в диапазоне от 0,008 до 0,025 мЗв/год для природных радионуклидов и от 0,004 до 0,20 мЗв/год для 137Cs при условии нахождения человека на огороде 840 ч в год.</p></abstract><trans-abstract xml:lang="en"><p>The article provides results of application of the field (in situ) gamma spectrometry method for carrying out mass monitoring measurements of ambient dose equivalent rate and soil contamination density with 137Cs in kitchen garden plots located in the zone of radioactive contamination after the Chernobyl accident. In 2020 and 2021, 115 private farmsteads in 46 settlements of the Bryansk region were surveyed. At the time of the survey, the officially established average density of soil contamination with 137Cs in the settlements ranged from 27 to 533 kBq/m2 . The field spectra were measured using a portable scintillation gamma-spectrometer-dosimeter. Results of the field measurements and subsequent calculations of soil contamination density with 137Cs in the kitchen gardens were in good agreement with official data on the average soil contamination density with 137Cs in the surveyed settlements. The mean value of the ratio of the experimental data to the official data was 1.04. Individual values of experimental data deviated from corresponding official values by no more than two times. The use of the gamma spectrometry method in situ made it possible: 1) to determine separately values of the ambient dose equivalent rate from 137Cs and from natural radionuclides in the soil, and 2) to estimate the effective external doses to a person who worked in the kitchen gardens. The measured values of ambient dose equivalent rate varied from 17 to 53 nSv/h (mean ± standard deviation = 35 ± 9 nSv/h) for natural radionuclides and from 8 to 432 nSv/h (mean ± standard deviation = 125 ± 91 nSv/h) for 137Cs. The ambient dose equivalent rate from 137Cs normalized to the soil contamination density with 137Cs in the same kitchen garden was in the range of 0.41–0.84 (nSv/h)/(kBq/m2 ) with a mean value of 0.55 (nSv/h)/(kBq/m2 ). If a person stayed in kitchen garden for 840 hours per year, the estimated effective external doses from natural radionuclides and 137Cs were respectively in the range of 0.008–0.025 mSv/year and 0.004–0.20 mSv/year.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Чернобыльская авария</kwd><kwd>почва</kwd><kwd>огород</kwd><kwd>137Cs</kwd><kwd>плотность загрязнения</kwd><kwd>мощность амбиентного эквивалента дозы</kwd><kwd>in situ</kwd><kwd>гамма-спектрометрия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>the Chernobyl accident</kwd><kwd>soil</kwd><kwd>kitchen garden</kwd><kwd>137Cs</kwd><kwd>contamination density</kwd><kwd>ambient dose equivalent rate</kwd><kwd>in situ</kwd><kwd>gamma spectrometry</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">Травникова И.Г., Брук Г.Я., Шутов В.Н., и др. 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