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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2024-8-56-68</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-2227</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>ФИЗИКО-ХИМИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICOCHEMICAL MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Измерение чистоты органических веществ: общие подходы и разработка оптимальной процедуры исследований чистого органического вещества</article-title><trans-title-group xml:lang="en"><trans-title>Measuring the purity of organic chemicals: general approaches and development of an appropriate procedure for research of pure organic chemicals</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1032-5653</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михеева</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikheeva</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алёна Юрьевна Михеева, Кандидат хим. наук, Ведущий научный сотрудник, Зам. руководителя НИО государственных эталонов в области органического и неорганического анализа</p><p>Санкт-Петербург</p></bio><bio xml:lang="en"/><email xlink:type="simple">a.mikheeva@vniim.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт метрологии им. Д. И. Менделеева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>D. I. Mendeleev All-Russian Institute for Metrology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2024</year></pub-date><volume>73</volume><issue>8</issue><fpage>56</fpage><lpage>68</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/2227">https://www.izmt.ru/jour/article/view/2227</self-uri><abstract><p>Отмечена востребованность чистых веществ в различных отраслях народного хозяйства, науки и промышленности, а также необходимость чистых веществ для решения метрологических задач в области органического анализа, где чистое органическое вещество является основой формирования цепи метрологической прослеживаемости к Международной системе единиц. Рассмотрены международно признанные подходы к измерению чистоты чистых органических веществ, обеспечивающие прослеживаемость аттестованного (сертифицированного) значения чистоты вещества к основным единицам Международной системы единиц – молю и килограмму. Обуждены особенности использования прямых и косвенного методов измерений чистоты органических веществ, а также конкретные аналитические техники и процедуры, которые можно использовать для этой цели. Подчёркнуто, что определение чистоты органического вещества в большинстве случаев – непростая аналитическая и метрологическая задача, что требует применения релевантных инструментальных методов и создания на их основе оптимальной процедуры измерений, которая гарантирует всестороннее изучение органического вещества и позволяет достичь требуемой точности значения аттестованной характеристики. Отмечено, что с учётом колоссального разнообразия органических соединений определение чистоты вещества никогда не будет стандартизированной процедурой.</p></abstract><trans-abstract xml:lang="en"><p>Pure materials are in demand in many sectors of the national economy, including the metrological service. High purity organic material is the ultimate source of metrological traceability in organic analysis to the basic units of the International System of Units (SI). This article presents the general approaches to determining the mass fraction of the main component in pure organic chemicals, which provide a traceable connection between the certified value of substance purity and the basic SI units - mass (kilogram) and amount of substance (mole), the features of using direct and indirect measurement approaches are considered, specific analytical methods that can be used for this purpose are discussed. Determining the purity of an organic material in most cases is not a plain analytical and metrological task. Solving this issue requires the relevant instrumental methods and appropriate measurement procedure, which is able to provide a comprehensive study of organic matter and guarantee the necessary accuracy of the certified value. Taking in consideration the vast diversity of organic chemicals, the determination of the purity of organic substances will never be a standardized procedure.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>чистые органические вещества</kwd><kwd>количество вещества</kwd><kwd>моль</kwd><kwd>метрологическая прослеживаемость</kwd><kwd>основной компонент</kwd><kwd>примесные компоненты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pure organic compounds</kwd><kwd>amount of substance</kwd><kwd>mole</kwd><kwd>metrological traceability</kwd><kwd>main component</kwd><kwd>impurity components</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The author declares that no funds, grants, or other support were received during the preparation of this manuscript.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Международная система единиц (СИ). 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