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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">10.20915/2077-1177-2019-15-2-39-50</article-id><article-id custom-type="elpub" pub-id-type="custom">rmjournal-200</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>Разработка стандартного образца состава 0,1 м раствора бихромата калия ГСО 10992-2017</article-title><trans-title-group xml:lang="en"><trans-title>Development of a reference material for the composition of 0.1 m potassium dichromate solution. Certified reference material GSO 10992-2017</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7288-8254</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шимолин</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Shimolin</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шимолин Александр Юрьевич - научный сотрудник лаборатории физических и химических методов метрологической аттестации стандартных образцов, ResearcherlD: Q-5745-2017.</p><p>620075, Екатеринбург, ул. Красноармейская, д. 4</p></bio><bio xml:lang="en"><p>Alexandr J. Shimolin - Researcher of Laboratory of Physical And Chemical Methods of Reference Materials Certification, ResearcherID: Q-5745-2017.</p><p>4 Krasnoarmeyskaia St., Ekaterinburg, 620075</p></bio><email xlink:type="simple">alex-shimolin@uniim.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>Собина</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sobina</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Собина Алена Вячеславовна - кандидат технических наук, заведующий лабораторией физических и химических методов метрологической аттестации стандартных образцов.</p><p>620075, Екатеринбург, ул. Красноармейская, д. 4</p></bio><bio xml:lang="en"><p>Alena V. Sobina - Ph. D. (Engineering), The Head of Laboratory of Physical and Chemical Methods of Reference Materials Certification (223) UNIIM.</p><p>4 Krasnoarmeyskaia St., Ekaterinburg, 620075</p></bio><email xlink:type="simple">sobinaav@uniim.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГУП Уральский научно-исследовательский институт метрологии</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Research Institute for Metrology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>05</day><month>08</month><year>2019</year></pub-date><volume>15</volume><issue>2</issue><fpage>39</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шимолин А.Ю., Собина А.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Шимолин А.Ю., Собина А.В.</copyright-holder><copyright-holder xml:lang="en">Shimolin A.Y., Sobina 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.rmjournal.ru/jour/article/view/200">https://www.rmjournal.ru/jour/article/view/200</self-uri><abstract><p>В данной работе описаны ключевые этапы разработки и исследования высокоточного, обладающего метрологической прослеживаемостью стандартного образца состава раствора бихромата калия. Стандартный образец удобен для применения в качестве титранта для окислительно-восстановительного титрования, не требуют дополнительных операций по подготовке перед использованием. Метрологические характеристики СО установлены прямым первичным методом кулонометрического титрования с применением Государственного первичного эталона ГЭТ176. Интервал допускаемых аттестованных значений молярной концентрации бихромата калия в стандартном образце - от 0,098 моль/дм3 до 0,102 моль/дм3. Относительная расширенная неопределенность (при к = 2) аттестованного значения молярной концентрации бихромата калия составила 0,024%, относительные стандартные неопределенности от долговременной и кратковременной нестабильности составили 0,0044 % каждая. Срок годности разработанного стандартного образца составляет 1 год при соблюдении условий хранения. В статье описана процедура измерений молярной концентрации бихромата калия, описано применяемое оборудование и представлен полный бюджет неопределенности. Разработанный стандартный образец внесен в Государственный реестр утвержденных типов стандартных образцов под номером ГСО 10992-2017 и может быть использован для передачи единицы массовой (молярной) концентрации компонента стандартным образцам и химическим реактивам по реакции окисления-восстановления; поверки, калибровки СИ, контроля метрологических характеристик при проведении испытаний СИ, в том числе в целях утверждения типа; градуировки СИ; аттестации методик измерений, контроля точности результатов измерений массовой (молярной) доли и массовой (молярной) концентрации компонентов в жидких и твердых веществах и материалах.</p></abstract><trans-abstract xml:lang="en"><p>This paper describes key stages in the development and investigation of a high-precision certified reference material (CRM) for the composition of potassium dichromate solution. The proposed reference material (RM) exhibits metrological traceability to the units of the International System of Units (SI). Not requiring additional preparation before use, the CRM is convenient for use as a titrant in redox titration.</p><p>The metrological characteristics of the developed CRM were determined by the direct primary method of coulomet-ric titration using the State Primary Standard GET 176. The interval of permissible certified values of the molar concentration of potassium dichromate in the CRM under study is found to vary from 0.098 mol/dm3 to 0.102 mol/ dm3. The relative expanded uncertainty (k = 2) of the certified value ofpotassium dichromate molar concentration is calculated to be 0.024 %, with relative standard uncertainties caused by long-term and short-term instability each being equal to 0.0044 %. The shelf life of the developed CRM is found to be 1 year, provided that storage conditions are ensured. A procedure for measuring the molar concentration ofpotassium dichromate is described, along with the equipment used. A comprehensive uncertainty budget for the measurements is assembled.</p><p>The developed CRM is included into the State Register of Certified Reference Materials under the number GSO 10992-2017. The CRM can be used for transferring the mass (molar) concentration unit of a component to RMs and chemical reagents via oxidation-reduction reactions; the verification and calibration of measuring instruments (MI), as well as control of metrological characteristics during MI trials including type approval; MI graduation; validation of measurement procedures; control of measurement results when determining the mass (molar) fraction and mass (molar) concentration of components in liquid and solid substances and materials.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>кулонометрия</kwd><kwd>кулонометрическое титрование</kwd><kwd>титриметрия</kwd><kwd>ГЭТ 176</kwd><kwd>раствор бихромата калия</kwd><kwd>стандартный образец</kwd><kwd>неопределенность аттестованного значения</kwd><kwd>калий двухромовокислый</kwd><kwd>прослеживаемость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>coulometry</kwd><kwd>coulometric titration</kwd><kwd>titrimetry</kwd><kwd>state primary standard</kwd><kwd>GET 176</kwd><kwd>potassium dichromate solution</kwd><kwd>reference material</kwd><kwd>certified value uncertainty</kwd><kwd>potassium dichromate</kwd><kwd>traceability</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">Milton M. 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