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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">chemicallytech</journal-id><journal-title-group><journal-title xml:lang="en">Fine Chemical Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Тонкие химические технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-6593</issn><issn pub-type="epub">2686-7575</issn><publisher><publisher-name>MIREA – Russian Technological University (RTU MIREA).</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32362/2410-6593-2025-20-4-372-381</article-id><article-id custom-type="edn" pub-id-type="custom">QNZATD</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-2280</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="en"><subject>ANALYTICAL METHODS IN CHEMISTRY AND CHEMICAL TECHNOLOGY</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>АНАЛИТИЧЕСКИЕ МЕТОДЫ В ХИМИИ И ХИМИЧЕСКОЙ ТЕХНОЛОГИИ</subject></subj-group></article-categories><title-group><article-title>Rare-earth element complexes with complexones, heparin, and antibiotics in biosystems for use as electrode-active materials in membrane ion-selective electrodes</article-title><trans-title-group xml:lang="ru"><trans-title>Комплексы редкоземельных элементов в биосистемах с комплексонами, гепарином, антибиотиками для применения в качестве электродактивного вещества мембранных ионселективных электродов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-4800-7154</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крюков</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kryukov</surname><given-names>Timofey V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Крюков Тимофей Владимирович, ведущий инженер, кафедра неорганической и аналитической химии</p><p>170100, Тверь, ул. Желябова, д. 33</p><p>Scopus Author ID 57195754947</p><p>ResearсherID LQJ-1144-2024</p></bio><bio xml:lang="en"><p>Timofey V. Kryukov, Leading Engineer, Department of Inorganic and Analytical Chemistry</p><p>33, Zhelyabova ul., Tver, 170100</p><p>Scopus Author ID 57195754947</p><p>ResearсherID LQJ-1144-2024</p></bio><email xlink:type="simple">p528491@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/0009-0006-7325-1232</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Феофанова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Feofanova</surname><given-names>Mariana A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Феофанова Мариана Александровна, к.х.н., доцент, декан химико-технологического факультета</p><p>170100, Тверь, ул. Желябова, д. 33</p><p>Scopus Author ID 14059766600</p></bio><bio xml:lang="en"><p>MarianaA. Feofanova, Cand. Sci. (Chem.), Associate Professor, Dean of the Faculty of Chemistry and Technology</p><p>33, Zhelyabova ul., Tver, 170100</p><p>Scopus Author ID 14059766600</p></bio><email xlink:type="simple">Feofanova.MA@tversu.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/0000-0003-0361-2945</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никольский</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikol’skii</surname><given-names>Viktor M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Никольский Виктор Михайлович, д.х.н., профессор кафедры неорганической и аналитической химии</p><p>170100, Тверь, ул. Желябова, д. 33</p><p>Scopus Author ID 7006483319</p><p>ResearсherID B-5217-2014</p></bio><bio xml:lang="en"><p>Viktor M. Nikol’skii, Dr. Sci. (Chem.), Professor, Department of Inorganic and Analytical Chemistry</p><p>33, Zhelyabova ul., Tver, 170100</p><p>Scopus Author ID 7006483319</p><p>ResearсherID B-5217-2014</p><p> </p></bio><email xlink:type="simple">Nikolskiy.VM@tversu.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/0000-0002-5517-2294</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванова</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>Alexandra I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванова Александра Ивановна, к.ф.-м.н., доцент кафедры прикладной физики физико-технического факультета</p><p>170100, Тверь, ул. Желябова, д. 33</p><p>Scopus Author ID 36720663600</p><p>ResearсherID X-1725-2018</p></bio><bio xml:lang="en"><p>Alexandra I.Ivanova, Cand. Sci.(Phys.-Math.), Associate Professor, Department of Applied Physics, Faculty of Physics and Technology</p><p>33, Zhelyabova ul., Tver, 170100</p><p>Scopus Author ID 36720663600</p><p>ResearсherID X-1725-2018</p></bio><email xlink:type="simple">Ivanova.AI@tversu.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/0000-0002-1726-3451</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каплунов</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaplunov</surname><given-names>Ivan A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каплунов Иван Александрович, д.т.н., заведующий кафедрой прикладной физики физико-технического факультета</p><p>170100, Тверь, ул. Желябова, д. 33</p><p>Scopus Author ID 6602690601</p><p>ResearсherID AAH-3551-2019</p></bio><bio xml:lang="en"><p>Ivan A. Kaplunov, Dr. Sci. (Eng.), Head of the Department of Applied Physics, Faculty of Physics and Technology</p><p>33, Zhelyabova ul., Tver, 170100</p><p>Scopus Author ID 6602690601</p><p>ResearсherID AAH-3551-2019</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тверской государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tver State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>02</day><month>09</month><year>2025</year></pub-date><volume>20</volume><issue>4</issue><fpage>372</fpage><lpage>381</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kryukov T.V., Feofanova M.A., Nikol’skii V.M., Ivanova A.I., Kaplunov I.A., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Крюков Т.В., Феофанова М.А., Никольский В.М., Иванова А.И., Каплунов И.А.</copyright-holder><copyright-holder xml:lang="en">Kryukov T.V., Feofanova M.A., Nikol’skii V.M., Ivanova A.I., Kaplunov I.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.finechem-mirea.ru/jour/article/view/2280">https://www.finechem-mirea.ru/jour/article/view/2280</self-uri><abstract><sec><title>Objectives</title><p>Objectives. The creation of ion-selective electrodes (ISEs) based on rare-earth element (REE) complexes in environmentally friendly biosystems is of interest due to the increased relevance of environmental management. The work sets out to study the possibility of using REE complexes for creating ISEs sensitive to cefazolin. The created potentiometric sensors can be used for rapid determination of antibiotics in microvolume samples.</p></sec><sec><title>Methods</title><p>Methods. The work presents the synthesis of electrode-active REE complexes with cefazolin. In order to identify the obtained electrodeactive substances and investigate their physicochemical characteristics, the following methods were used: elemental analysis with a scanning electron microscope, infrared spectroscopy, simultaneous thermal analysis, and potentiometry.</p></sec><sec><title>Results</title><p>Results. Previously unstudied complexes of cerium and lutetium with cefazolin were obtained for use as an electrode-active substance for creating ISEs. The physicochemical characteristics of the complexes were investigated. For the created ISEs, the following characteristics were studied: performance characteristics, the dependence of electrode potentials on the analyte concentration, stability, and the response time of the electrode placed in the sample under study. The created membrane electrodes are stable, have a concentration range of operation of pC 1–3, and can be used in the pH range 4–8. Testing of the selectivity of the ISEs with respect to Na+ and K+ ions showed that the electrodes are effective even in a thousandfold excess. The performance of the electrodes was tested using model systems.</p></sec><sec><title>Conclusions</title><p>Conclusions. Novel REE–cefazolin complexes were successfully demonstrated for use as electrode-active substances for the manufacture of membrane ISEs sensitive to cephalosporin antibiotics.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. В настоящее время остро стоит вопрос сохранения благоприятной экологической обстановки на планете, поэтому интересны работы по созданию ионселективных электродов (ИСЭ) на базе комплексов редкоземельных элементов (РЗЭ) в экологически безопасных биосистемах. Цель работы — изучить возможности использования комплексов РЗЭ для создания ИСЭ с откликом на цефазолин. Создаваемые потенциометрические сенсоры позволят проводить экспрессное определение антибиотиков в микрообъемных пробах.</p></sec><sec><title>Методы</title><p>Методы. В работе реализован синтез электродактивных комплексов РЗЭ с цефазолином. Для идентификации полученных электродактивных веществ и изучения их физико-химических характеристик использованы элементный анализ с помощью растрового электронного микроскопа, инфракрасная спектроскопия, синхронный термический анализ и потенциометрия.</p></sec><sec><title>Результаты</title><p>Результаты. Получены ранее не исследованные комплексы церия и лютеция с цефазолином с целью их использования в качестве электродактивного вещества для создания ИСЭ. Изучены их физико-химические характеристики. Для созданных ИСЭ исследованы их эксплуатационные характеристики, зависимость электродных потенциалов от концентрации аналита, а также изучены стабильность созданных ИСЭ и время отклика сигнала электрода, помещенного в исследуемую пробу. Созданные мембранные электроды стабильны, имеют концентрационный диапазон эксплуатации pC 1–3 и могут быть использованы в диапазоне рН 4–8. Проверка селективности ИСЭ по отношению к ионам Na+ и K+ показала, что электроды эффективны даже при их тысячекратном присутствии. Работоспособность электродов проверена на модельных объектах.</p></sec><sec><title>Выводы</title><p>Выводы. Показано, что впервые созданные комплексы РЗЭ с цефазолином могут успешно использоваться в качестве электродактивных веществ для изготовления мембранных ИСЭ на цефалоспориновые антибиотики.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>координационные соединения редкоземельных элементов</kwd><kwd>комплексоны</kwd><kwd>гепарин</kwd><kwd>комплексы цефазолина</kwd><kwd>цефалоспорины</kwd><kwd>ионселективные электроды</kwd></kwd-group><kwd-group xml:lang="en"><kwd>coordination compounds of rare-earth elements</kwd><kwd>complexons</kwd><kwd>heparin</kwd><kwd>cefazolin complexes</kwd><kwd>cephalosporins</kwd><kwd>ion-selective electrodes</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">Менделеев Д.И. Основы химии. Т. 2. М.: Госиздат; 1928. 771 с.</mixed-citation><mixed-citation xml:lang="en">Mendeleev D.I. Osnovy khimii (Fundamentals of Chemistry). V. 2. 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