<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">cpomaem</journal-id><journal-title-group><journal-title xml:lang="ru">Коррозия: защита материалов и методы исследований</journal-title><trans-title-group xml:lang="en"><trans-title>Title in english</trans-title></trans-title-group></journal-title-group><publisher><publisher-name>ИФХЭ РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.61852/2949-3412-2026-4-3-39-50</article-id><article-id custom-type="elpub" pub-id-type="custom">cpomaem-162</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>Защита стали от коррозии в кислых средах просроченным лекарством Пентоксифиллин</article-title><trans-title-group xml:lang="en"><trans-title>Protection of steel against corrosion in acidic environments using the expired drug Pentoxifylline</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>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>392000, г. Тамбов, ул. Интернациональная, д. 33</p></bio><bio xml:lang="en"><p>Internatsyonalnaya str., 33, 392000 Tambov</p></bio><email xlink:type="simple">vits21@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>Канаева</surname><given-names>Л. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kanaeva</surname><given-names>L. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>392000, г. Тамбов, ул. Интернациональная, д. 33</p></bio><bio xml:lang="en"><p>Internatsyonalnaya str., 33, 392000 Tambov</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>Семенюк</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Semenyuk</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>392000, г. Тамбов, ул. Интернациональная, д. 33</p></bio><bio xml:lang="en"><p>Internatsyonalnaya str., 33, 392000 Tambov</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>Алехина</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekhina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>392000, г. Тамбов, ул. Интернациональная, д. 33</p></bio><bio xml:lang="en"><p>Internatsyonalnaya str., 33, 392000 Tambov</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Тамбовский государственный университет имени Г.Р. Державина»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>G.R. Derzhavin Tambov State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>16</day><month>09</month><year>2026</year></pub-date><volume>0</volume><issue>3</issue><fpage>39</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Цыганкова Л.Е., Канаева Л.И., Семенюк Т.В., Алехина О.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Цыганкова Л.Е., Канаева Л.И., Семенюк Т.В., Алехина О.В.</copyright-holder><copyright-holder xml:lang="en">Tsygankova L.E., Kanaeva L.I., Semenyuk T.V., Alekhina O.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.cpmrm.ru/jour/article/view/162">https://www.cpmrm.ru/jour/article/view/162</self-uri><abstract><p>Одним из методов решения проблемы с ненадлежащей утилизацией фармацевтических препаратов является возможность применения лекарств с истекшим сроком использования в качестве ингибиторов коррозии металлов. В данной работе оценена ингибирующая эффективность просроченного препарата Пентоксифиллина по отношению к коррозии стали Ст3 в 1 н растворах HCl и H2SO4. При комнатной температуре препарат (200 мг/л) проявляет защитный эффект, равный соответственно 83 и 76%, по данным гравиметрии. Введение препарата вместе с добавкой KCNS способствует увеличению защитного эффекта до 98 и 91% соответственно. Добавка KI способствует росту защитного эффекта до 88% лишь в сернокислой среде. Пентоксифиллин и его композиция с KCNS вызывают торможение диффузии водорода в сталь в исследуемых растворах.</p></abstract><trans-abstract xml:lang="en"><p>One of methods of solution to the problem of improper disposal of pharmaceuticals is the use of drugs as metal corrosion inhibitors. This study assessed the inhibitory efficacy of expired Pentoxifylline against the corrosion of St3 steel in 1 N HCl and H2SO4 solutions. At room temperature, the drug (200 mg/L) exhibits a protective effect of 83 and 76%, respectively, according to gravimetric data. Introduction of the drug with the KCNS additive increases the protective effect to 98 and 91%, respectively. The addition of KI increases the protective effect to 88% only in a sulfuric acid medium. Pentoxifylline and its combination with KCNS inhibit hydrogen diffusion into steel in the solutions studied.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пентоксифиллин</kwd><kwd>ингибитор</kwd><kwd>коррозия</kwd><kwd>кислота</kwd><kwd>защитный эффект</kwd><kwd>композиция</kwd><kwd>диффузия водорода</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pentoxifylline</kwd><kwd>inhibitor</kwd><kwd>corrosion</kwd><kwd>acid</kwd><kwd>protective effect</kwd><kwd>composition</kwd><kwd>hydrogen diffusion</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено в рамках реализации программы развития ФГБОУ ВО «Тамбовский государственный университет имени Г.Р. Державина» «Приоритет-2030». Результаты получены с использованием оснащения Центра коллективного пользования научным оборудованием ТГУ имени Г.Р. Державина.</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">H.H. Tabak and R.L. Bunch, Steroid hormones as water pollutants. I. Metabolism of natural and synthetic ovulation-inhibiting hormones by microorganisms of activated sludge and primary settled sewage, Dev. Ind. Microbiol., 1970, 11, 367−376.</mixed-citation><mixed-citation xml:lang="en">H.H. Tabak and R.L. Bunch, Steroid hormones as water pollutants. I. Metabolism of natural and synthetic ovulation-inhibiting hormones by microorganisms of activated sludge and primary settled sewage, Dev. Ind. Microbiol., 1970, 11, 367−376.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">M.L. Richardson and J.M. Bowron, The fate of pharmaceutical chemicals in the aquatic environment, J. Pharm. Pharmacol., 1985, 37, no. 1, 1–12. doi: 10.1111/j.2042-7158.1985.tb04922.x</mixed-citation><mixed-citation xml:lang="en">M.L. Richardson and J.M. Bowron, The fate of pharmaceutical chemicals in the aquatic environment, J. Pharm. Pharmacol., 1985, 37, no. 1, 1–12. doi: 10.1111/j.2042-7158.1985.tb04922.x</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">M. Ortúzar, M. Esterhuizen, D.R. Olicón-Hernández, J. González-López and E. Aranda, Pharmaceutical pollution in aquatic environments: A concise review of environmental impacts and bioremediation systems, Front. Microbiol., 2022, 13, 869332. 10.3389/fmicb.2022.869332</mixed-citation><mixed-citation xml:lang="en">M. Ortúzar, M. Esterhuizen, D.R. Olicón-Hernández, J. González-López and E. Aranda, Pharmaceutical pollution in aquatic environments: A concise review of environmental impacts and bioremediation systems, Front. Microbiol., 2022, 13, 869332. 10.3389/fmicb.2022.869332</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">K.S. Le Corre, C. Ort, D. Kateley, B. Allen, B.I. Escher and J. Keller, Consumption-based approach for assessing the contribution of hospitals towards the load of pharmaceutical residues in municipal wastewater, Environ. Int., 2012, 45, 99–111. doi: 10.1016/j.envint.2012.03.008</mixed-citation><mixed-citation xml:lang="en">K.S. Le Corre, C. Ort, D. Kateley, B. Allen, B.I. Escher and J. Keller, Consumption-based approach for assessing the contribution of hospitals towards the load of pharmaceutical residues in municipal wastewater, Environ. Int., 2012, 45, 99–111. doi: 10.1016/j.envint.2012.03.008</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">C.D.S. Pereira, L.A. Maranho, F.S. Cortez, F.H. Pusceddu, A.R. Santos, D.A. Ribeiro, A. Cesar and L.L. Guimarães, Occurrence of pharmaceuticals and cocaine in a Brazilian coastal zone, Sci. Total Environ., 2016, 548–549, 148–154. doi: 10.1016/j.scitotenv.2016.01.051</mixed-citation><mixed-citation xml:lang="en">C.D.S. Pereira, L.A. Maranho, F.S. Cortez, F.H. Pusceddu, A.R. Santos, D.A. Ribeiro, A. Cesar and L.L. Guimarães, Occurrence of pharmaceuticals and cocaine in a Brazilian coastal zone, Sci. Total Environ., 2016, 548–549, 148–154. doi: 10.1016/j.scitotenv.2016.01.051</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">K. Nödler, D. Voutsa and T. Licha, Polar organic micropollutants in the coastal environment of diferent marine systems, Mar. Pollut. Bull., 2014, 85, no. 1, 50–59. doi: 10.1016/j.marpolbul.2014.06.024</mixed-citation><mixed-citation xml:lang="en">K. Nödler, D. Voutsa and T. Licha, Polar organic micropollutants in the coastal environment of diferent marine systems, Mar. Pollut. Bull., 2014, 85, no. 1, 50–59. doi: 10.1016/j.marpolbul.2014.06.024</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">M.J. Baari and C.W. Sabandar, A review on expired drug-based corrosion inhibitors: Chemical composition, structural effects, inhibition mechanism, current challenges, and future prospects, Indones. J. Chem., 2021, 21, no. 5, 1316–1336. doi: 10.22146/ijc.64048</mixed-citation><mixed-citation xml:lang="en">M.J. Baari and C.W. Sabandar, A review on expired drug-based corrosion inhibitors: Chemical composition, structural effects, inhibition mechanism, current challenges, and future prospects, Indones. J. Chem., 2021, 21, no. 5, 1316–1336. doi: 10.22146/ijc.64048</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">R.K. Pathak and P. Mishra, Drugs as corrosion inhibitors: A review, Int. J. Sci. Res., 2016, 5, no. 4, 671−677.</mixed-citation><mixed-citation xml:lang="en">R.K. Pathak and P. Mishra, Drugs as corrosion inhibitors: A review, Int. J. Sci. Res., 2016, 5, no. 4, 671−677.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">C. Verma, D.S. Chauhan and M.A. Quraishi, Drugs as environmentally benign corrosion inhibitors for ferrous and nonferrous materials in acid environment: An overview, J. Mater. Environ. Sci., 2017, 8, no. 11, 4040−4051.</mixed-citation><mixed-citation xml:lang="en">C. Verma, D.S. Chauhan and M.A. Quraishi, Drugs as environmentally benign corrosion inhibitors for ferrous and nonferrous materials in acid environment: An overview, J. Mater. Environ. Sci., 2017, 8, no. 11, 4040−4051.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">E. Salah, Expired desloratidine drug as inhibitor for corrosion of carbon steel pipeline in hydrochloric acid solution, Int. J. Electrochem. Sci., 2021, 16, no. 1, 150182. doi: 10.20964/2021.01.27</mixed-citation><mixed-citation xml:lang="en">E. Salah, Expired desloratidine drug as inhibitor for corrosion of carbon steel pipeline in hydrochloric acid solution, Int. J. Electrochem. Sci., 2021, 16, no. 1, 150182. doi: 10.20964/2021.01.27</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">S. Shojaee, M.S. Zandi and N. Rastakhiz, The effect of Tetracycline drug as a green corrosion inhibitor for carbon steel in HCl media, J. Indian Chem. Soc., 2022, 99, no. 10, 100700. doi: 10.1016/j.jics.2022.100700</mixed-citation><mixed-citation xml:lang="en">S. Shojaee, M.S. Zandi and N. Rastakhiz, The effect of Tetracycline drug as a green corrosion inhibitor for carbon steel in HCl media, J. Indian Chem. Soc., 2022, 99, no. 10, 100700. doi: 10.1016/j.jics.2022.100700</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">S.Y. Al-Nami, Corrosion inhibition of low carbon steel in 1 M HCl solution by Cephalexin monohydrate drug and synergistic iodide additives, Biointerface Res. Appl. Chem., 2021, 11, no. 1, 8550−8563. doi: 10.33263/BRIAC111.85508563</mixed-citation><mixed-citation xml:lang="en">S.Y. Al-Nami, Corrosion inhibition of low carbon steel in 1 M HCl solution by Cephalexin monohydrate drug and synergistic iodide additives, Biointerface Res. Appl. Chem., 2021, 11, no. 1, 8550−8563. doi: 10.33263/BRIAC111.85508563</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Я.Г. Авдеев, К.Л. Анфилов и Т.Э. Андреева, Защита стали в растворах кислот ингибитором на основе окситетрациклина, Коррозия: защита материалов и методы исследований, 2025, 3, № 3, 38–51. doi: 10.61852/2949-3412-2025-3-3-38-51</mixed-citation><mixed-citation xml:lang="en">Я.Г. Авдеев, К.Л. Анфилов и Т.Э. Андреева, Защита стали в растворах кислот ингибитором на основе окситетрациклина, Коррозия: защита материалов и методы исследований, 2025, 3, № 3, 38–51. doi: 10.61852/2949-3412-2025-3-3-38-51</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">М.A.V. Devanathan and Z. Stachurski, The adsorbtion and diffusion of electrolytic hydrogen in palladium, Proc. R. Soc. Lond. A, 1962, 270, no. 1340, 90−102. doi: 10.1098/rspa.1962.0205</mixed-citation><mixed-citation xml:lang="en">М.A.V. Devanathan and Z. Stachurski, The adsorbtion and diffusion of electrolytic hydrogen in palladium, Proc. R. Soc. Lond. A, 1962, 270, no. 1340, 90−102. doi: 10.1098/rspa.1962.0205</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Н.В. Кардаш и В.В. Батраков, Методика определения водорода, диффундирующего через мембрану, Защита металлов, 1995, 31, № 4, 441−444.</mixed-citation><mixed-citation xml:lang="en">Н.В. Кардаш и В.В. Батраков, Методика определения водорода, диффундирующего через мембрану, Защита металлов, 1995, 31, № 4, 441−444.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">В.В. Экилик и О.В. Чиков, Некоторые диагностические критерии взаимного влияния ингибиторов кислотной коррозии металлов, Защита металлов, 1991, 27, № 1, 72−82.</mixed-citation><mixed-citation xml:lang="en">В.В. Экилик и О.В. Чиков, Некоторые диагностические критерии взаимного влияния ингибиторов кислотной коррозии металлов, Защита металлов, 1991, 27, № 1, 72−82.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
