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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">esoil</journal-id><journal-title-group><journal-title xml:lang="ru">Бюллетень Почвенного института имени В.В. Докучаева</journal-title><trans-title-group xml:lang="en"><trans-title>Dokuchaev Soil Bulletin</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0136-1694</issn><issn pub-type="epub">2312-4202</issn><publisher><publisher-name>V.V. Dokuchaev Soil Science Institute</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.19047/0136-1694-2024-120-185-230</article-id><article-id custom-type="elpub" pub-id-type="custom">esoil-866</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>Оценка загрязнения почв г. Улан-Удэ полициклическими ароматическими углеводородами</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of soil pollution with polycyclic aromatic hydrocarbons in Ulan-Ude</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-4486-9812</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жаксылыков</surname><given-names>Н. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhaxylykov</surname><given-names>N. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра геохимии ландшафтов и географии почв, аспирант</p></bio><email xlink:type="simple">niyaz.zh@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>Кошелева</surname><given-names>Н. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosheleva</surname><given-names>N. E.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Завгородняя</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zavgorodnyaya</surname><given-names>Yu. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МГУ им. М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>25</day><month>09</month><year>2024</year></pub-date><volume>0</volume><issue>120</issue><fpage>185</fpage><lpage>230</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Жаксылыков Н.Б., Кошелева Н.Е., Завгородняя Ю.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Жаксылыков Н.Б., Кошелева Н.Е., Завгородняя Ю.А.</copyright-holder><copyright-holder xml:lang="en">Zhaxylykov N.B., Kosheleva N.E., Zavgorodnyaya Y.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://bulletin.esoil.ru/jour/article/view/866">https://bulletin.esoil.ru/jour/article/view/866</self-uri><abstract><p>Впервые изучено загрязнение полициклическими ароматическими углеводородами (ПАУ) почвенного покрова г. Улан-Удэ, столицы Республики Бурятия. Содержание 16 индивидуальных полиаренов проанализировано в образцах верхнего горизонта фоновых каштановых и городских почв, отобранных в ходе почвенно-геохимической съемки в июле–августе 2022 г. Средняя концентрация суммы ПАУ в почвенном покрове Улан-Удэ составила 735 нг/г, что превышает концентрацию в фоновых почвах (87 нг/г) более чем в 8 раз. По убыванию суммы ПАУ функциональные зоны образуют ряд: железнодорожная транспортная &gt; автотранспортная &gt; промышленная &gt; одноэтажная селитебная &gt; многоэтажная селитебная &gt; рекреационная. При этом сумма ПАУ в железнодорожной транспортной зоне выше, чем в других функциональных зонах в 2.6–5.2 раза, что указывает на то, что железнодорожный транспорт является самым мощным источником ПАУ в городе. Загрязнение полиаренами почв во всех функциональных зонах определяется преимущественно средне- (46%) и высокомолекулярными (41%) соединениями. Среди низкомолекулярных ПАУ лидирует фенантрен (9% от суммы ПАУ), но более интенсивно аккумулируются среднемолекулярные флуорантен (18%) и пирен (13%), среди высокомолекулярных соединений доминируют бензо(ghi)перилен (12%), бензо(b)флуорантен (10%), индено(1,2,3-cd)пирен (8%) и бенз(а)пирен (6%). Концентрация суммы 16 ПАУ в почвенном покрове города варьирует в пределах 17–9 540 нг/г. Самые высокие уровни загрязнения (3 226–9 540 нг/г) зафиксированы в 9 точках опробования (4% территории города), которые формируют наиболее контрастные локальные аномалии ПАУ. На более чем половине территории Улан-Удэ сумма ПАУ не превышает 500 нг/г. Расчет индикаторных соотношений индивидуальных ПАУ позволил определить доминирующие типы источников, к которым относятся железнодорожный транспорт и сжигание угля. Экологическая опасность загрязнения почв ПАУ в Улан-Удэ на 64% обусловлена бенз(а)пиреном и в меньшей степени – бензо(b)флуорантеном (9.6%), индено(1,2,3-cd)пиреном (7.2%), дибензо(ah)антраценом (6.5%) и бенз(а)антраценом (6.1%).</p></abstract><trans-abstract xml:lang="en"><p>: For the first time, polycyclic aromatic hydrocarbons (PAH) contamination of the soil cover of Ulan-Ude, the capital of the Republic of Buryatia, was studied. The content of 16 individual polyarenes was analyzed in the upper horizon of background chestnut and urban soils, sampled during soil and geochemical survey in July–August 2022. The average concentration of total PAHs in the soil cover of Ulan-Ude was 735 ng/g, which was 8 times as much as the concentration in the background soils (87 ng/g). The PAH amount in the soil of various functional zones decrease in the following order: railway transport &gt; motor traffic &gt; industrial &gt; one-story residential &gt; multi-story residential &gt; recreational. At the same time, the amount of PAHs in the railway transport zone was 2.6–5.2 times higher than in other functional zones, which indicates that railway transport is the most powerful source of PAHs in the city. Contamination of soils with polyarenes in all functional zones is determined primarily by medium- (46%) and high-molecular-weight (41%) compounds. Among PAHs with low molecular weight, phenanthrene prevailed (9% of the total PAHs), but medium-molecular-weight fluoranthene (18%) and pyrene (13%) showed higher share; high-molecular-weight compounds dominated by benzo(ghi)perylene (12%), benzo(b)fluoranthene (10%), indeno(1,2,3-cd)pyrene (8%) and benzo(a)pyrene (6%). The total amount of 16 PAHs in the soil cover of the city varied within the range of 17–9 540 ng/g. The highest levels of pollution (3 226–9 540 ng/g) were recorded at 9 sampling points (4% of the city), which form the most contrasting local PAH anomalies. In more than half of the territory of Ulan-Ude, the total amount of PAHs did not exceed 500 ng/g. The indicator ratios of individual PAHs made it possible to determine the dominant types of sources, which include railway transport and coal combustion. The contribution to the environmental hazard of soil contamination with PAHs in Ulan-Ude was mainly made by benzo(a)pyrene (64%) and, to a lesser extent, by benzo(b)fluoranthene (9.6%), indeno(1,2,3-cd)pyrene (7.2%), dibenzo(ah)anthracene (6.5%) and benzo(a)anthracene (6.1%).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ПАУ</kwd><kwd>техногенные аномалии</kwd><kwd>промышленные выбросы</kwd><kwd>загрязнение от транспорта</kwd><kwd>экологическая опасность</kwd><kwd>индикаторные соотношения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>PAHs</kwd><kwd>anthropogenic anomalies</kwd><kwd>industrial emissions</kwd><kwd>transport pollution</kwd><kwd>environmental hazard</kwd><kwd>indicator ratios</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Полевые работы выполнены по договору № 8/Д-2021 с ФГБУ УралНИИ «Экология», анализ и интерпретация данных – при поддержке РНФ (проект № 19-77-3004-П).</funding-statement><funding-statement xml:lang="en">Field work was carried out under contract No. 8/D-2021 with FGBU Ural Research Institute “Ecology”, data analysis and interpretation were supported by Russian Scientific Foundation (project No. 19-77-3004-П).</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">Базаров А.Б., Баранов А.О., Павлов В.Н., Слепенкова Ю.М., Тагаева Т.О. 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