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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">medbio</journal-id><journal-title-group><journal-title xml:lang="ru">Медико-биологические проблемы жизнедеятельности</journal-title><trans-title-group xml:lang="en"><trans-title>Medical and Biological Problems of Life Activity</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-2088</issn><publisher><publisher-name>Республиканский научно-практический центр радиационной медицины и экологии человека</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.58708/2074-2088.2023-2(30)-54-61</article-id><article-id custom-type="elpub" pub-id-type="custom">medbio-325</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>МЕДИКО-БИОЛОГИЧЕСКИЕ ПРОБЛЕМЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MEDICAL-BIOLOGICAL PROBLEMS</subject></subj-group></article-categories><title-group><article-title>Геометрический фактор для оценки плотности загрязнения почвы in-situ</article-title><trans-title-group xml:lang="en"><trans-title>Geometry factor for in-situ soil contamination density estimation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9221-269X</contrib-id><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>г.  Минск</p></bio><email xlink:type="simple">nilova@bcnrs.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3915-7385</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Буздалкин</surname><given-names>К. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Buzdalkin</surname><given-names>K. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Гомель</p></bio><email xlink:type="simple">buzdalkin@yandex.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>ГНТУ «Центр по ядерной и радиационной безопасности» МЧС Республики Беларусь</institution><country>Belarus</country></aff><aff xml:lang="ru" id="aff-2"><institution>ГУ «РНПЦ радиационной медицины и экологии человека»; УО «Гомельский государственный медицинский университет»</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>21</day><month>09</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>54</fpage><lpage>61</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нилова Е.К., Буздалкин К.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Нилова Е.К., Буздалкин К.Н.</copyright-holder><copyright-holder xml:lang="en">Nilova E.K., Buzdalkin K.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://medbio.ejournal.by/jour/article/view/325">https://medbio.ejournal.by/jour/article/view/325</self-uri><abstract><p>Предлагается метод оценки плотности загрязнения почвы гамма-излучающими радионуклидами (Бк·м-2)  in-situ  (в полевых условиях без отбора проб). Метод позволяет учесть особенности распределения радионуклидов по профилю почвы на данном участке по соотношению рассеянного и нерассеянного потоков фотонов. Расширена область применения и снижена неопределенность ранее разработанного метода, применявшегося при радиологическом обследовании сельскохозяйственных земель, загрязнённых 137Cs, без отбора проб. Предложенный метод дистанционной оценки плотности загрязнения практически не вносит дополнительной ошибки по сравнению с традиционным способом, включающим отбор проб почвы и последующий их анализ в лабораторных условиях. Продолжительность набора спектра и его автоматической обработки при плотности загрязнения 137Cs более 100 кБк·м-2 не превышает 1 мин.</p></abstract><trans-abstract xml:lang="en"><p>A method is proposed for estimating the density of soil contamination with gamma-emitting radionuclides (Bc·m-2) in situ (in the field without sampling). The method allows to take into account the peculiarities of the distribution of radionuclides along the soil profile at a given site by the ratio of scattered and non-scattered photon fluxes. The scope of application has been expanded and the uncertainty of the previously developed method used for radiological examination of agricultural lands contaminated with 137Cs without sampling has been reduced. The proposed method of remote assessment of the pollution density practically does not introduce an additional error in comparison with the traditional method, which includes soil sampling and subsequent analysis in laboratory conditions. The duration of the spectrum set and its automatic processing at a 137Cs contamination density of more than 100 kBq·m-2 does not exceed 1 min.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>радионуклид</kwd><kwd>плотность загрязнения</kwd><kwd>гамма-спектрометр</kwd><kwd>in-situ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>radionuclides</kwd><kwd>pollution density</kwd><kwd>gamma spectrometer</kwd><kwd>in-situ</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">Generic procedures for monitoring in a nuclear or radiological emergency / International atomic energy agency IAEA-TECDOC-1092. – Vienna, 1999. – 305 p.</mixed-citation><mixed-citation xml:lang="en">Generic procedures for monitoring in a nuclear or radiological emergency / International atomic energy agency IAEA-TECDOC-1092. – Vienna, 1999. – 305 p.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Generic Models for Use in Assessing the Impact of Discharges of Radioactive Substances to the Environment / IAEA Safety Reports Series № 19. 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