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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">rmjournal</journal-id><journal-title-group><journal-title xml:lang="ru">Эталоны. Стандартные  образцы</journal-title><trans-title-group xml:lang="en"><trans-title>Measurement Standards. Reference Materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2687-0886</issn><publisher><publisher-name>D. I. Mendeleyev Institute for Metrology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20915/2077-1177-2023-19-3-31-43</article-id><article-id custom-type="elpub" pub-id-type="custom">rmjournal-401</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>Стандартные образцы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Reference materials</subject></subj-group></article-categories><title-group><article-title>Метрологическое обеспечение в области изотермической калориметрии титрования: перспективы разработки стандартных образцов</article-title><trans-title-group xml:lang="en"><trans-title>Metrological Support in the Field of Isothermal Titration Calorimetry: Prospects for the Development of Reference Materials</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0401-5405</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мишина</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mishina</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мишина Карина Андреевна –  инженер лаборатории эталонов и научных исследований в области калориметрии горения и особо чистых органических веществ для метрологических целей </p><p>190005, г. Санкт-Петербург, Московский пр., 19 </p></bio><bio xml:lang="en"><p>Karina A. Mishina – Engineer of the Laboratory for Measurement Standards and Scientific Research in the field of Combustion Calorimetry and High-Purity Organic Substances for Metrological Purposes</p><p>19 Moskovsky ave., St. Petersburg, 190005</p></bio><email xlink:type="simple">k.a.mishina@vniim.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГУП «Всероссийский научно-исследовательский институт метрологии им. Д. И. Менделеева»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>D. I. Mendeleyev Institute for Metrology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>07</month><year>2023</year></pub-date><volume>19</volume><issue>3</issue><fpage>31</fpage><lpage>43</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мишина К.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Мишина К.А.</copyright-holder><copyright-holder xml:lang="en">Mishina K.A.</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.rmjournal.ru/jour/article/view/401">https://www.rmjournal.ru/jour/article/view/401</self-uri><abstract><p>Изотермическая калориметрия титрования (ИТК) позволяет исследовать тепловые эффекты различных химических и физико-химических процессов, в том числе и процессов растворения. Данный метод является сравнительно новым. Поэтому активное расширение области его применения выявило ряд проблем. Например, в рассматриваемой статье поднимается проблема недостаточного метрологического обеспечения изотермических калориметров титрования, что приводит к несогласованности результатов, полученных на различных моделях калориметров, а также к их несоответствию литературным данным. Используемые в настоящее время электрическая и химическая процедуры калибровки калориметров не являются универсальными и имеют ряд ограничений при их применении. Целью настоящего исследования является выработка основных подходов к созданию сертифицированных стандартных образцов с аттестованным значением количества теплоты физико-химических взаимодействий с установленной метрологической прослеживаемостью к основным единицам SI.</p><p>В ходе выполнения исследования проведен анализ состояния метрологического обеспечения в области измерений ИТК, сформулированы основные требования к веществам – кандидатам на роль СО; оценена целевая неопределенность значения интегральной теплоты разведения растворов пропанола-1 путем анализа характеристик рабочих средств измерений, что позволило установить требования к методу измерений, применяемому для характеризации СО. Предложен и опробован метод определения аттестованного значения количества интегральной теплоты разведения, обеспечивающий прослеживаемость к государственному первичному специальному эталону единицы количества теплоты в области калориметрии растворения и реакций ГЭТ 133.</p><p>В перспективе для реализации проекта необходимо продолжение исследований с целью получения экспериментальных данных по характеризации, оценке однородности и стабильности материала СО, обработки полученных результатов и оценки неопределенности аттестованного значения, что позволит завершить разработку стандартных образцов.</p></abstract><trans-abstract xml:lang="en"><p>Isothermal titration calorimetry (ITC) allows studying the thermal effects of various chemical and physicochemical processes, including dissolution processes. This method is relatively new. Therefore, the active expansion of the scope of its application has revealed a number of problems. For instance, the article raises the problem of insufficient metrological support for isothermal titration calorimeters, which leads to inconsistency of the results obtained on different models of calorimeters, as well as their inconsistency with literature data. The current electrical and chemical calibration procedures for calorimeters are not universal and have a number of limitations in their application.</p><p>The purpose of the research is to develop basic approaches to the creation of certified reference materials with a certified value of heat of physicochemical interactions with established metrological traceability to the base SI units.</p><p>In the course of the study, the analysis of the state of metrological support in the field of ITC measurements was carried out, the main requirements for candidate substances to RMs were formulated; the target uncertainty of the value of the integral heat of dilution of propanol-1 solutions was estimated by analyzing the characteristics of working measuring instruments, which made it possible to establish requirements for the measurement method applied to characterize RMs. A method for determining the certified value of the integral heat of dilution that provides traceability to the State primary special standard of the unit of heat in the field of dissolution calorimetry and reactions GET 133 has been proposed and tested.</p><p>In order to implement the project, it is necessary to continue research in order to obtain experimental data on the characterization, assessment of the homogeneity and stability of the material, processing the obtained results, and estimating the uncertainty of the certified value, which will make it possible to complete the development of reference materials.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>изотермическая калориметрия титрования</kwd><kwd>неопределенность измерений</kwd><kwd>химическая калибровка ИКТ</kwd><kwd>стандартные образцы</kwd><kwd>эталон</kwd></kwd-group><kwd-group xml:lang="en"><kwd>isothermal titration calorimetry</kwd><kwd>measurement uncertainty</kwd><kwd>chemical calibration of ITC</kwd><kwd>reference materials</kwd><kwd>standard</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках совершенствования государственного первичного специального эталона единицы количества теплоты в области калориметрии растворения и реакций ГЭТ 133-2012. Измерения были выполнены на оборудовании ФГУП «ВНИИМ им. Д. И. Менделеева».</funding-statement><funding-statement xml:lang="en">The study was carried out as part of the improvement of the State primary special standard of the unit of heat in the field of dissolution calorimetry and reactions GET 133-2012. The measurements were performed on the equipment of the D. I. Mendeleyev Institute for Metrology.</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">Sarge S. M., Höhne G. W. H., Hemminger W. Calorimetry: fundamentals, instrumentation and applications. Weinheim: Wiley-VCH Verlag GmbH &amp; Co. KGaA, 2014. 280 p. https://doi.org/10.1002/9783527649365</mixed-citation><mixed-citation xml:lang="en">Sarge S. M., Höhne G. W. H., Hemminger W. (2014) Calorimetry: fundamentals, instrumentation and applications. Weinheim: WileyVCH Verlag GmbH &amp; Co. 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