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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">ecodag</journal-id><journal-title-group><journal-title xml:lang="ru">Юг России: экология, развитие</journal-title><trans-title-group xml:lang="en"><trans-title>South of Russia: ecology, development</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1992-1098</issn><issn pub-type="epub">2413-0958</issn><publisher><publisher-name>State Institute of Applied Ecology of the Republic of Dagestan</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18470/1992-1098-2025-3-20</article-id><article-id custom-type="elpub" pub-id-type="custom">ecodag-3587</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>ГЕОЭКОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GEOECOLOGY</subject></subj-group></article-categories><title-group><article-title>Гидрохимические особенности водосбора реки Мзымта</article-title><trans-title-group xml:lang="en"><trans-title>Hydrochemical features of the Mzymta River catchment area</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8166-1040</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Моисеева</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Moiseeva</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлия А. Моисеева, кандидат геологоминералогических наук, старший научный сотрудник, Международный научный центр  в области экологии и вопросов изменения климата </p><p>354340 Федеральная территория «Сириус», Олимпийский пр‐т, 1.</p><p>Тел. +79138037501 </p></bio><bio xml:lang="en"><p>Yulia A. Moiseeva, Candidate of Geological and Mineralogical Sciences, Senior Researcher, International Research Centre for Ecology and Climate Change Issues</p><p>1 Olympiysky Ave, Sirius Federal Territory, 354340.</p><p>Tel. +79138037501 </p></bio><email xlink:type="simple">moiseeva.ya@talantiuspeh.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/0000-0001-7169-8264</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пургина</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Purgina</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дарья В. Пургина</p><p>Федеральная территория «Сириус», </p></bio><bio xml:lang="en"><p>Daria V. Purgina</p><p>Sirius Federal Territory</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7759-2831</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Торопов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Toropov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей С. Торопов</p><p>Москва</p></bio><bio xml:lang="en"><p>Andrey S. Toropov</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-4837-6963</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Главная</surname><given-names>У. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Glavnaya</surname><given-names>U. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ульяна В. Главная</p><p>Новосибирская область</p></bio><bio xml:lang="en"><p>Ulyana V. Glavnaya</p><p>Novosibirsk Region</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-5979-3052</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ситников</surname><given-names>П. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Sitnikov</surname><given-names>P. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пётр Т. Ситников</p><p>Санкт‐Петербург</p></bio><bio xml:lang="en"><p>Peter T. Sitnikov</p><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-6826-0482</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шигапова</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Shigapova</surname><given-names>А. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Айгуль Ф. Шигапова</p><p>Республика Татарстан</p></bio><bio xml:lang="en"><p>Aigul F. Shigapova</p><p>Republic of Tatarstan</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-7815-8094</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бояркина</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Boyarkina</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вероника В. Бояркина</p><p>Новосибирская область</p></bio><bio xml:lang="en"><p>Veronika V. Boyarkina</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-6"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8597-8475</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гринько</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Grinko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей А. Гринько</p><p>Федеральная территория «Сириус»</p></bio><bio xml:lang="en"><p>Andrey A. Grinko</p><p>Sirius Federal Territory</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно‐технологический университет «Сириус»</institution></aff><aff xml:lang="en"><institution>Sirius University of Science and Technology</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Биотехнологический лицей № 21</institution></aff><aff xml:lang="en"><institution>Biotechnological Lyceum No. 21</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Академический лицей «Физико‐техническая школа» им. Ж. И. Алфёрова</institution></aff><aff xml:lang="en"><institution>Academic Lyceum, J. I. Alfyorov Physico‐Technical School</institution></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Лицей‐интернат для одаренных детей с углубленным изучением химии – филиал ФГБОУ ВО «Казанский национальный исследовательский технологический университет»</institution></aff><aff xml:lang="en"><institution>Boarding Lyceum for Gifted Children with Advanced Study of Chemistry, Branch of Kazan National Research  Technological University</institution></aff></aff-alternatives><aff-alternatives id="aff-6"><aff xml:lang="ru"><institution>Белоярская средняя общеобразовательная школа</institution></aff><aff xml:lang="en"><institution>Beloyarskaya Secondary General Education School</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>31</day><month>01</month><year>2026</year></pub-date><volume>20</volume><issue>4</issue><elocation-id>218‐230</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Моисеева Ю.А., Пургина Д.В., Торопов А.С., Главная У.В., Ситников П.Т., Шигапова А.Ф., Бояркина В.В., Гринько А.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Моисеева Ю.А., Пургина Д.В., Торопов А.С., Главная У.В., Ситников П.Т., Шигапова А.Ф., Бояркина В.В., Гринько А.А.</copyright-holder><copyright-holder xml:lang="en">Moiseeva Y.A., Purgina D.V., Toropov A.S., Glavnaya U.V., Sitnikov P.T., Shigapova А.F., Boyarkina V.V., Grinko A.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://ecodag.elpub.ru/ugro/article/view/3587">https://ecodag.elpub.ru/ugro/article/view/3587</self-uri><abstract><p>Химический состав рек определяется особенностями бассейна водосбора, климатическими условиями и антропогенной нагрузкой. Данное исследование посвящено выявлению основных природных и антропогенных факторов и закономерностей, обуславливающих формирование химического состава р. Мзымта и её притоков в среднем и нижнем течении. В статье представлены данные гидрохимических параметров, содержания биогенных соединений и микроэлементов, в том числе тяжелых металлов реки Мзымты и её притоков от места слияния р. Пслух с р. Мзымтой до впадения в Чёрное море. В результате было выявлено, что нижнее течение относительно среднего характеризуется более высокими концентрациями всех биогенных соединений. Была выделена группа микроэлементов (V, Al, Ti, Mn, Fe, Со, Cu, Pb и РЗЭ), концентрации которых имеют однонаправленные изменения по мере движения вод вниз по течению. Воды р. Пслух, р. Мзымта в зоне её слияния с рр. Пслух и Кепша, а также в зоне влияния сточных вод и устье р. Мзымта существенно обогащены микроэлементами относительно кларка речных вод. В целом, изменения в химическом составе р. Мзымта происходят под воздействие двух факторов: природного и антропогенного, а именно из‐за различных геологических условий её основных притоков, режима и уклона реки в среднем и нижнем течении, а также из‐за влияния строительных работ в руслах рек и сброса сточных вод.</p></abstract><trans-abstract xml:lang="en"><p>The chemical composition of rivers is determined by catchment basin features, climatic conditions and anthropogenic influence. This study is devoted to the identification of the main natural and anthropogenic factors and patterns that determine the formation of the chemical composition of the Mzymta River and its tributaries in its middle and lower reaches. Data on hydrochemical parameters, content of biogenic compounds and trace elements, including heavy metals of the Mzymta River and its tributaries from the confluence of the Pslukh River with the Mzymta River to the confluence with the Black Sea, are presented. The result revealed that the lower reaches were characterised by higher concentrations of all nutrient compounds than the middle reaches. A group of trace elements (V, Al, Ti, Mn, Fe, Co, Cu, Pb and REE) whose concentrations have unidirectional changes as the waters move downstream has been identified. The waters of the Pslukh River and the Mzymta River in the area of its confluence with the Pslukh and Kepsha Rivers, as well as in the zone of influence of sewage and its estuary, are significantly enriched in trace elements relative to the median chemical constituents of river waters. In general, changes in the chemical composition of the Mzymta River are influenced by two factors, natural and anthropogenic, namely due to the different geological conditions of its main tributaries, the regime and gradient of the river in its middle and lower reaches and the impact of construction works in the river channels and wastewater discharge.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Химический состав вод</kwd><kwd>микроэлементы</kwd><kwd>биогенные соединения</kwd><kwd>поверхностные воды</kwd><kwd>р. Мзымта</kwd><kwd>притоки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Water chemistry</kwd><kwd>trace elements</kwd><kwd>biogenic compounds</kwd><kwd>surface water</kwd><kwd>Mzymta River</kwd><kwd>tributaries</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта  Российского научного фонда № 24‐27‐20125,  https://rscf.ru/project/24‐27‐20125/.</funding-statement><funding-statement xml:lang="en">The study was supported by Russian Science Foundation grant No. 24‐27‐20125, https://rscf.ru/project/24‐27‐20125/.</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">Костылева А.В. Распределение растворенного органического углерода в приустьевых районах Большого Сочи (северо‐восточная часть Черного моря) // Океанология. 2015. Т. 55. N 2. 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