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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">mes</journal-id><journal-title-group><journal-title xml:lang="ru">Экстремальная биомедицина</journal-title><trans-title-group xml:lang="en"><trans-title>Extreme Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">3033-8964</issn><issn pub-type="epub">3033-8972</issn><publisher><publisher-name>Centre for Strategic Planning of the Federal Medical and Biological Agency</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47183/mes.2021.014</article-id><article-id custom-type="elpub" pub-id-type="custom">mes-209</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>МЕТОД ГИГИЕНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METHOD HYGIENE</subject></subj-group></article-categories><title-group><article-title>Экспериментальное обоснование предельно допустимой концентрации дихлоргексафторбутена в воздухе рабочей зоны</article-title><trans-title-group xml:lang="en"><trans-title>Experimental justification of the maximum possible concentration (mpc) of dichlorohexafluorobutene in a working area</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>Шкаева</surname><given-names>И. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Shkaeva</surname><given-names>I. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>St. 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>Дулов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dulov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>St. 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>Никулина</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikulina</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>St. 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>Солнцева</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Solnceva</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Светлана Андреевна Солнцева</p><p>ст. Капитолово, корп. 93, г.п. Кузьмоловский, 188663, Всеволожский район, Ленинградская обл.</p></bio><bio xml:lang="en"><p>Svelana A. Solnceva</p><p>Kapitolovo, str. 93, r.p. Kuzmolovsky, Vsevolozhsky r., Leningradskaja obl., 188663</p></bio><email xlink:type="simple">solnceva.74@inbox.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>Земляной</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zemlyanoi</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт гигиены, профпатологии и экологии человека Федерального медико-биологического агентства</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Hygiene, Occupational Pathology and Human Ecology of the Federal Medical Biological Agency</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>15</day><month>10</month><year>2024</year></pub-date><volume>23</volume><issue>2</issue><fpage>53</fpage><lpage>58</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шкаева И.Е., Дулов С.А., Никулина О.С., Солнцева С.А., Земляной А.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Шкаева И.Е., Дулов С.А., Никулина О.С., Солнцева С.А., Земляной А.В.</copyright-holder><copyright-holder xml:lang="en">Shkaeva I.E., Dulov S.A., Nikulina O.S., Solnceva S.A., Zemlyanoi A.V.</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.extrememedicine.ru/jour/article/view/209">https://www.extrememedicine.ru/jour/article/view/209</self-uri><abstract><p>До настоящего времени отсутствовал гигиенический норматив содержания 1,4-дихлоргексафторбутена (ДХГФ) в воздухе рабочей зоны. Целью работы было провести оценку токсичности и опасности ДХГФ в острых, подострых и хроническом экспериментах. Установлено, что вещество высокоопасно, DL50 для мышей при внутрижелудочном введении — 79,0 мг/кг, СL50 — 229,0 мг/м3, для крыс — 86,0 мг/кг и 670,0 мг/м3. ДХГФ обладает умеренным местным раздражающим действием на кожу животных и слизистые оболочки глаз и кожно-резорбтивным эффектом. Порог однократного ингаляционного действия ДХГФ обоснован на уровне 18,2 мг/м3 по изменению параметров поведенческих реакций и показателей состояния крови. В подостром 30-суточном ингаляционном эксперименте обнаружены выраженные кумулятивные свойства вещества. В хроническом четырехмесячном ингаляционном эксперименте воздействие ДХГФ в концентрации 16,8 мг/м3 вызывало у подопытных крыс нарушение функционального состояния центральной нервной системы, сердечной деятельности, изменения гематологических, биохимических показателей, кислотно-основного состояния и газообмена крови, а также морфологические изменения в легких, которые сохранялись через 30 суток восстановительного периода. Порог хронического действия ДХГФ установлен на уровне 2,2 мг/м3, недействующая концентрация — 0,24 мг/м3. На основании полученных результатов в качестве предельно допустимой концентрации ДГХФ в воздухе рабочей зоны обоснована и утверждена величина 0,2 мг/м3, 2-й класс опасности, пары + аэрозоль + (требуется специальная защита кожи и глаз). Для измерения массовой концентрации ДХГФ в воздухе рабочей зоны разработан и утвержден газохроматографический метод с электронно-захватным детектированием.</p></abstract><trans-abstract xml:lang="en"><p>To date, there have been no exposure standards for air concentrations of 1,4-dichlorohexafluorobutene (DCHF) in the work areas. The study was aimed to assess the toxicity of DCHF and to evaluate health hazard in acute, subacute, and chronic experiments. It was found that the substance was highly hazardous, DL50 in mice after intragastric injection was 79.0 mg/kg, СL50 was 229.0 mg/m3, and in rats these values were 86,0 mg/kg and 670,0 mg/m3. In animals, DCHF had a moderate local irritative effect on animal skin and ocular mucous membranes, as well as the skin resorptive effect. The 18.2 mg/m3 threshold limit concentration for a single inhalation exposure to DCHF was defined based on the changes in behavior responses and blood parameters. The 30-day subacute inhalation experiment revealed the pronounced cumulative effect of the substance. The 4-months chronic inhalation study showed that the exposure of experimental rats to 16.8 mg/m3 concentration of DCHF resulted in impaired function of central nervous system and cardiac activity, altered hematologic, biochemical, acid-base, and blood gas values, as well as in morphological alterations in lungs, which persisted after the 30-day recovery period. The chronic exposure threshold defined for DCHF was 2.2 mg/m3, and the defined no observable effect level was 0.24 mg/m3. Based on the study results, the maximum permissible concentration of DCHF in the air of the working area of 0.2 mg/m3 was confirmed and approved, the substance was assigned hazard class 2, vapor + aerosol + (specific protection of skin and eyes required). Gas chromatographic method using electron-capture detection for determination of DCHF mass air concentration in the work areas has been developed and approved.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>хладон RL316</kwd><kwd>токсичность</kwd><kwd>опасность</kwd><kwd>гигиенический норматив</kwd><kwd>воздух рабочей зоны</kwd></kwd-group><kwd-group xml:lang="en"><kwd>freon RL316</kwd><kwd>toxicity</kwd><kwd>hazard</kwd><kwd>exposure standard</kwd><kwd>air quality in the work areas</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">Уждавин Э.Р. Токсикология и гигиена высокомолекулярных соединений и химического сырья. М., 1966; с. 71–72.</mixed-citation><mixed-citation xml:lang="en">Uzhdavin Je.R. Toksikologija i gigiena vysokomolekuljarnyh soedinenij i himicheskogo syr'ja. M., 1966; s. 71–72. 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