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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">medlit</journal-id><journal-title-group><journal-title xml:lang="ru">Гигиена и санитария</journal-title><trans-title-group xml:lang="en"><trans-title>Hygiene and Sanitation</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0016-9900</issn><issn pub-type="epub">2412-0650</issn><publisher><publisher-name>Federal Scientific Center of Hygiene named after F.F. Erisman</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47470/0016-9900-2021-100-9-1013-1018</article-id><article-id custom-type="elpub" pub-id-type="custom">medlit-1733</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>МЕТОДЫ ГИГИЕНИЧЕСКИХ ИССЛЕДОВАНИЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METHODS OF HYGIENIC AND EXPERIMENTAL INVESTIGATIONS</subject></subj-group></article-categories><title-group><article-title>Обеспечение условий повышения достоверности следового анализа металлов-токсикантов</article-title><trans-title-group xml:lang="en"><trans-title>Provision conditions for increasing the reliability of trace analysis of toxic metals</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9158-5136</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Егорова</surname><given-names>Марина Валентиновна</given-names></name><name name-style="western" xml:lang="en"><surname>Egorova</surname><given-names>Marina V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канд. биол. наук, ст. науч. сотр. отд. аналитических методов контроля ФБУН «Федеральный научный центр гигиены им. Ф.Ф. Эрисмана» Роспотребнадзора, 141014, Мытищи.</p><p>e-mail: analyt1@yandex.ru</p></bio><bio xml:lang="en"><p>MD, PhD, senior researcher of an analytical control methods department of Federal Scientific Center of Hygiene named after F.F. Erisman of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing, Mytishchi, 141014, Russian Federation.</p><p>e-mail: analyt1@yandex.ru</p></bio><email xlink:type="simple">analyt1@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0552-0174</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Родионов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Rodionov</surname><given-names>Alexander S.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1265-287X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богданова</surname><given-names>Ю. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogdanova</surname><given-names>Julia J.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФБУН «Федеральный научный центр гигиены имени Ф.Ф. Эрисмана» Федеральной службы по надзору в сфере защиты прав потребителей и благополучия человека; ФГБОУ ДПО «Российская медицинская академия непрерывного профессионального образования» Министерства здравоохранения Российской Федерации</institution></aff><aff xml:lang="en"><institution>Federal Scientific Center of Hygiene named after F.F. Erisman of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing; Russian Medical Academy of Continuous Professional Education</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФБУН «Федеральный научный центр гигиены имени Ф.Ф. Эрисмана» Федеральной службы по надзору в сфере защиты прав потребителей и благополучия человека</institution></aff><aff xml:lang="en"><institution>Federal Scientific Center of Hygiene named after F.F. Erisman of the Federal Service for Supervision in Protection of the Rights of Consumer and Man Wellbeing</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>06</day><month>09</month><year>2021</year></pub-date><volume>100</volume><issue>9</issue><fpage>1013</fpage><lpage>1018</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Егорова М.В., Родионов А.С., Богданова Ю.Ю., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Егорова М.В., Родионов А.С., Богданова Ю.Ю.</copyright-holder><copyright-holder xml:lang="en">Egorova M.V., Rodionov A.S., Bogdanova J.J.</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.rjhas.ru/jour/article/view/1733">https://www.rjhas.ru/jour/article/view/1733</self-uri><abstract><sec><title>Введение</title><p>Введение. В наиболее значимую группу экотоксикантов входят тяжёлые металлы, проблема определения которых на низких уровнях является одной из основных в аналитической химии и связана со значительным увеличением числа различных факторов, вносящих вклад в суммарную неопределённость, что увеличивает вероятность искажения результатов в связи с ошибочным принятием решения о соответствии полученных данных тому или иному нормативу. К наиболее существенным влияниям относят чистоту реактивов, посуды и воздуха лабораторных помещений.</p><p>Цель работы состояла в поиске путей снижения перечисленных влияний при условии минимизации затрат временных, материальных и трудовых ресурсов.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. В ходе работы был выполнен ряд экспериментов, включающих анализ азотной кислоты на содержание металлов до и после очистки методом перегонки, анализ смывов с новой фторопластовой лабораторной посуды и посуды, подвергшейся очистке пропариванием, оценку влияния загрязнения воздуха лабораторного помещения на основании исследования градуировочных зависимостей, построенных при анализе стандартных растворов железа, приготовленных в «Чистом рабочем месте» и обычном вытяжном шкафу. Все измерения выполнялись методом масс-спектрометрии с индуктивно-связанной плазмой на масс-спектрометре Agilent 7800 ICP-MS.</p></sec><sec><title>Результаты</title><p>Результаты. Экспериментально доказана эффективность предложенных методов устранения мешающих влияний на ход анализа.</p></sec><sec><title>Заключение</title><p>Заключение. Решение технической и аналитической задачи поиска оптимальных условий подготовки реактивов, посуды и самого лабораторного помещения помимо снижения материальных и временных затрат позволяет решить главную задачу — повысить достоверность получаемых результатов и не допустить искажения информации о реально наблюдаемой степени загрязнения среды обитания при проведении измерений следовых количеств металлов-токсикантов.</p></sec><sec><title>Участие авторов</title><p>Участие авторов: </p></sec><sec><title>Егорова М</title><p>Егорова М.В. — концепция и дизайн исследования, написание текста, редактирование, утверждение окончательного варианта статьи, ответственность за целостность всех частей статьи;</p></sec><sec><title>Родионов А</title><p>Родионов А.С. — сбор и обработка материала, статистическая обработка, написание текста, сбор данных литературы;</p></sec><sec><title>Богданова Ю</title><p>Богданова Ю.Ю. — сбор и обработка материала.</p></sec><sec><title>Конфликт интересов</title><p>Конфликт интересов. Авторы декларируют отсутствие явных и потенциальных конфликтов интересов в связи с публикацией данной статьи.</p></sec><sec><title>Финансирование</title><p>Финансирование. Исследование не имело спонсорской поддержки.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Heavy metals are included in one of the significant groups of ecotoxicants. Determining heavy metals at low levels is one of the main problems in analytical chemistry, which depends on various factors. Ignoring the contribution of these factors to the total uncertainty can increase the probability of distortion of the results due to an erroneous decision on the compliance of the obtained data with a particular standard. The most significant influences include the purity of reagents, dishes, and air in laboratory rooms.</p></sec><sec><title>Purpose of the work</title><p>Purpose of the work. Search for ways of reducing the listed influences provided that the expense of time, material and labour resources are minimized.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. In the course of the work, many experiments were carried out, including the analysis of nitric acid for the content of metals before and after cleaning by distillation, the analysis of washes from new fluoroplastic laboratory glassware and glassware that had been cleaned by steaming, an assessment of the effect of air pollution in the laboratory room based on a study of calibration curves, which were constructed at the analysis of standard iron solutions prepared in the Clean Workplace and in a conventional fume hood. All measurements were performed by inductively coupled plasma mass spectrometry on Agilent 7800 ICP-MS mass spectrometer.</p></sec><sec><title>Results</title><p>Results. The efficiency of the proposed methods for eliminating interfering influences on the analysis has been experimentally proved.</p></sec><sec><title>Conclusion</title><p>Conclusion. The technical and analytical problem, which consists of finding optimal conditions for preparation of reagents, glassware cleaning and decreasing the influence of laboratory air pollution, allows to increase reliability of the obtained results and prevent distortion of information about the observed degree of environmental pollution.</p></sec><sec><title>Contribution</title><p>Contribution: </p></sec><sec><title>Egorova M</title><p>Egorova M.V. — the concept and design of the study, editing, approval of the final version of the article, responsibility for the integrity of all parts of the article;</p></sec><sec><title>Rodionov A</title><p>Rodionov A.S. — collection and processing of material, statistical analysis, writing the manuscript, collection of the literature data;</p></sec><sec><title>Bogdanova Ju</title><p>Bogdanova Ju.J. — collection and processing of material. </p></sec><sec><title>Conflict of interest</title><p>Conflict of interest. The authors declare no conflict of interest.</p></sec><sec><title>Acknowledgment</title><p>Acknowledgment. The study had no sponsorship.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>тяжёлые металлы</kwd><kwd>очистка посуды</kwd><kwd>«чистые помещения»</kwd><kwd>очистка кислот методом перегонки</kwd><kwd>атомная спектрометрия</kwd><kwd>масс-спектрометрия с индуктивно связанной плазмой</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heavy metals</kwd><kwd>cleaning dishes</kwd><kwd>«clean rooms»</kwd><kwd>purification of acids by distillation</kwd><kwd>atomic spectrometry</kwd><kwd>mass spectrometry with inductively coupled plasma</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">Mukasheva M.A, Nugumanova Sh.M., Surzhikov D.V. Influence of heavy metals on an environment and health of population. 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