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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">veststu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Сибирского государственного университета путей сообщения</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Siberian State University of Transport</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1815-9265</issn><publisher><publisher-name>Сибирский государственный университет путей сообщения</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">veststu-665</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>ФИЗИЧЕСКОЕ МОДЕЛИРОВАНИЕ, КОНСТРУКЦИИ И МАТЕРИАЛЫ</subject></subj-group></article-categories><title-group><article-title>ВЕЛИЧИНЫ рН БУФЕРНОЙ СИСТЕМЫ: ТРИС — HCl — МОРСКАЯ ВОДА ПРИ РАЗЛИЧНЫХ ТЕМПЕРАТУРАХ И ДАВЛЕНИЯХ</article-title><trans-title-group xml:lang="en"><trans-title></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>Шуваев</surname><given-names>А. В.</given-names></name></name-alternatives><email xlink:type="simple">shuvaev@risp.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>Зарубина</surname><given-names>С. А.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>СГУПС</institution><country>Russian Federation</country></aff><aff xml:lang="ru" id="aff-2"><institution>ИНХ СО РАН</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2012</year></pub-date><pub-date pub-type="epub"><day>16</day><month>09</month><year>2026</year></pub-date><issue>28</issue><fpage>238</fpage><lpage>249</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шуваев А.В., Зарубина С.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Шуваев А.В., Зарубина С.А.</copyright-holder><copyright-holder xml:lang="en">Шуваев А.В., Зарубина С.А.</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.vestnikstu.ru/jour/article/view/665">https://www.vestnikstu.ru/jour/article/view/665</self-uri><abstract><p>На основании литературных данных проанализировано состояние основных компонентов морской воды. Осуществлен расчет значений коэффициентов активности ионов хлора в морской воде при различных температурах и давлениях. Потенциометрическим методом в ячейке без жидкостного соединения с палладиево-водородным и хлорсеребряным электродами определены значения рН трис-морская вода буферного раствора при температурах 273-298 К и давлениях 0,1 — 58,8 МПа. Обнаружено значительное влияние температуры и несущественное давления на изменение величин рН трис-морская вода буферного раствора.</p></abstract><kwd-group xml:lang="ru"><kwd>рН морской воды</kwd><kwd>буферная система</kwd><kwd>трис</kwd><kwd>палладиево-водородный электрод</kwd><kwd>хлорсеребряный электрод</kwd><kwd>pH of salt water</kwd><kwd>buffer system</kwd><kwd>tris</kwd><kwd>palladium-hydride electrode</kwd><kwd>silver-silver chloride electrode</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">Бейтс Р. Определение рН. 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