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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-2175</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Определение количества графена в полиморфной многокомпонентной углеродной смеси по оптической характеристике в колориметрической системе CIELAB</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the Quantity of Graphene in a Polymorphic Multi-Component Carbon Mixture by Optical Characteristics in the CIELAB Colorimetric System</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>Доломатов</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Dolomatov</surname><given-names>M. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</p></bio><email xlink:type="simple">loctas616@bk.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>Левашов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Levashov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</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>Субханкулов</surname><given-names>В. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Subkhankulov</surname><given-names>V. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</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>Доломатова</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Dolomatova</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</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>Вершинин</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vershinin</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</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>Абдульминьев</surname><given-names>К. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Abdulminev</surname><given-names>K. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Уфа</p></bio><bio xml:lang="en"><p>Ufa</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уфимский государственный нефтяной технический университет</institution></aff><aff xml:lang="en"><institution>Ufa State Petroleum Technological University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>03</month><year>2026</year></pub-date><volume>93</volume><issue>2</issue><fpage>211</fpage><lpage>215</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Доломатов М.Ю., Левашов Д.А., Субханкулов В.Р., Доломатова М.М., Вершинин С.С., Абдульминьев К.Г., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Доломатов М.Ю., Левашов Д.А., Субханкулов В.Р., Доломатова М.М., Вершинин С.С., Абдульминьев К.Г.</copyright-holder><copyright-holder xml:lang="en">Dolomatov M.Y., Levashov D.A., Subkhankulov V.R., Dolomatova M.M., Vershinin S.S., Abdulminev K.G.</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://zhps.ejournal.by/jour/article/view/2175">https://zhps.ejournal.by/jour/article/view/2175</self-uri><abstract><p>Недостатком существующих методов количественного определения содержания графена является ограниченность их применения для анализа многокомпонентных полиморфных смесей, включающих в себя твердую аморфную, графитовую и графеновую фазы. Исследована возможность количественного определения графена в смеси с аморфными формами углерода по светлоте цвета в колориметрической системе CIELAB. В качестве объектов выбраны образцы графена, полученные методом химической эксфолиации, смешанные с аморфным углеродом. Установлено, что количество графена связано со светлотой цвета в системе CIELAB линейной зависимостью. Обнаруженные закономерности проверены на модельных смесях и подтверждаются статистической обработкой данных. Практическое использование наблюдаемого явления в технологии углеродных материалов заключается в возможности приближенной оценки содержания графена в смеси, содержащей другие модификации углерода.</p></abstract><trans-abstract xml:lang="en"><p>The disadvantage of existing methods for quantitative determination of graphene content is their limited application for the analysis of multicomponent polymorphic mixtures including solid amorphous, graphite and graphene phases. The aim of the study is the research of the possibility for determination of the amount of graphene in a polymorphic multicomponent carbon mixture using color lightness in the CIELAB system. As the object of the research the samples of chemically exfoliated graphene mixed with amorphous carbon were used. It was found that the amount of graphene is related to color lightness of the mixture in the CIELAB system by a linear relation. The discovered relations were tested on model mixtures and confirmed by statistical data processing. The practical use of the discovered phenomenon in the technology of carbon materials lies in the possibility of estimating the content of graphene in mixtures containing other carbon modifications.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>углеродные материалы</kwd><kwd>количество графена</kwd><kwd>светлота</kwd><kwd>система CIELAB</kwd><kwd>оптическая характеристика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>carbon materials</kwd><kwd>graphene amount</kwd><kwd>lightness</kwd><kwd>CIELAB system</kwd><kwd>optical characteristic</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Министерства науки и высшего образования РФ (в рамках государственной стратегической программы “Приоритет-2030” “Химия новой экономики”).</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">P. A. Advincula, W. 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