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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">corrosionprotection</journal-id><journal-title-group><journal-title xml:lang="ru">Практика противокоррозионной защиты</journal-title><trans-title-group xml:lang="en"><trans-title>Theory and Practice of Corrosion Protection</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-5738</issn><issn pub-type="epub">2658-6797</issn><publisher><publisher-name>Association "CARTEC"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31615/j.corros.prot.2024.113.3-2</article-id><article-id custom-type="elpub" pub-id-type="custom">corrosionprotection-131</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>МАТЕРИАЛЫ И ОБОРУДОВАНИЕ ДЛЯ ПРОТИВОКОРРОЗИОННОЙ ЗАЩИТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS AND EQUIPMENT FOR  CORROSION PROTECTION</subject></subj-group></article-categories><title-group><article-title>Использование просроченного препарата Аnaprilin против коррозии углеродистой стали</article-title><trans-title-group xml:lang="en"><trans-title>The Use of Expired Drug Anaprilin Against Corrosion of Carbon Steel</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>Брыксина</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bryksina</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Брыксина Виктория Александровна, аспирант</p><p>392008, г. Тамбов, Комсомольская площадь, д. 5</p></bio><bio xml:lang="en"><p>Viktoriya A. Bryksina, postgraduate student</p><p>5, Komsomolskaya square, Tambov, 392008</p></bio><email xlink:type="simple">victoria_98.bryksina@mail.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>Цыганкова</surname><given-names>Л. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsygankova</surname><given-names>L. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цыганкова Людмила Евгеньевна, д.х.н., профессор, заведующая кафедрой химии</p><p>392008, г. Тамбов, Комсомольская площадь, д. 5</p></bio><bio xml:lang="en"><p>Liudmila E. Tsygankova, Doctor of Chemistry, Professor, Head of Department of Chemistry</p><p>5, Komsomolskaya square, Tambov, 392008</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>Курьято</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kur`yato</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курьято Николай Алексеевич, м.н.c.</p><p>392022, г. Тамбов, пер. Ново-Рубежный, д. 28</p></bio><bio xml:lang="en"><p>Nikolay A. Kur`yato, junior research</p><p>28, Novo-Rubezhny lane, Tambov, 392022</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тамбовский государственный университет имени Г.Р. Державина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Derzhavin State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт использования техники и нефтепродуктов в сельском хозяйстве</institution><country>Россия</country></aff><aff xml:lang="en"><institution>All-Russian Research Institute for Use of Machinery and Petroleum Products in Agriculture</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>11</day><month>12</month><year>2024</year></pub-date><volume>29</volume><issue>3</issue><fpage>21</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Брыксина В.А., Цыганкова Л.Е., Курьято Н.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Брыксина В.А., Цыганкова Л.Е., Курьято Н.А.</copyright-holder><copyright-holder xml:lang="en">Bryksina V.A., Tsygankova L.E., Kur`yato N.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.corrosion-protection.ru/jour/article/view/131">https://www.corrosion-protection.ru/jour/article/view/131</self-uri><abstract><p>Экологически чистые ингибиторы коррозии, известные также как «зеленые» ингибиторы, используются уже на протяжении последнего десятилетия в экспериментах в области ингибирования коррозии. Активно проводятся научные исследования по использованию просроченных лекарственных препаратов в качестве «зеленых» ингибиторов коррозии металлов и сплавов. В данной работе изучено ингибирующее действие фармацевтического препарата Anaprilin с истекшим сроком годности против коррозии углеродистой стали Ст3 в 1Н растворе серной кислоты. Концентрация препарата варьировала в пределах 20…80 мг/л. Исследования проведены методами гравиметрии, потенциодинамической поляризации, импедансной спектроскопии, электрохимической диффузионной методики. Гравиметрические коррозионные испытания, проведенные при комнатной температуре и 80 °С, показали защитную эффективность препарата, достигающую при наибольшей исследуемой концентрации 90%. Присутствие Anaprilin в растворе вызывает замедление анодной парциальной электродной реакции и снижение емкости двойного электрического слоя. Определена изотерма адсорбции Anaprilin и рассчитано изменение свободной энергии адсорбции. Anaprilin снижает ток диффузии водорода через стальную мембрану.</p></abstract><trans-abstract xml:lang="en"><p>Environmentally friendly corrosion inhibitors, also known as «green» inhibitors, have been used for the past decade. In the experiments in the field of corrosion inhibition. Scientific research is actively conducted on the use of expired medicines as «green» corrosion inhibitors of metals and alloys. In this work, the inhibitory effect of the expired pharmaceutical drug Anaprilin against corrosion of carbon steel St3 in 1H sulfuric acid solution was studied. The concentration of the drug varied within 20…80 mg/l. The research was carried out using gravimetry, potentiodynamic polarization, impedance spectroscopy, and electrochemical diffusion techniques. Gravimetric corrosion tests conducted at room temperature and 80 °C showed the protective effectiveness of the drug, reaching 90% at the highest concentration under study. The presence of Anaprilin in the solution causes a slowdown in the anodic partial electrode reaction and a decrease in the capacity of the electrical double layer. The adsorption isotherm of Anaprilin was determined and the change in free energy of adsorption was calculated. Anaprilin reduces the diffusion current of hydrogen through a steel membrane.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>просроченные лекарственные препараты</kwd><kwd>углеродистая сталь</kwd><kwd>коррозия</kwd><kwd>серная кислота</kwd><kwd>Anaprilin</kwd><kwd>защитная эффективность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>expired drug</kwd><kwd>Anaprilin</kwd><kwd>carbon steel</kwd><kwd>corrosion</kwd><kwd>sulfuric acid</kwd><kwd>inhibition</kwd><kwd>acid solution</kwd><kwd>adsorption</kwd><kwd>protection efficiency</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">Ohoro C.R., Adeniji A.O., Okoh A.I., Okoh O.O. Distribution and chemical analysis of pharmaceuticals and personal care products (PPCPs) in the environmental systems: a review // Int. J. Environ. Res. 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