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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">aari</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы Арктики и Антарктики</journal-title><trans-title-group xml:lang="en"><trans-title>Arctic and Antarctic Research</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0555-2648</issn><issn pub-type="epub">2618-6713</issn><publisher><publisher-name>Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30758/0555-2648-2020-66-2-180-197</article-id><article-id custom-type="elpub" pub-id-type="custom">aari-256</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>ЭКОЛОГИЯ, БИОЦЕНОЛОГИЯ И БИОГЕОГРАФИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ECOLOGY, BIOCENOLOGY AND BIOGEOGRAPHY</subject></subj-group></article-categories><title-group><article-title>Хлорорганические соединения в субарктических малых озерах</article-title><trans-title-group xml:lang="en"><trans-title>Organochlorine compounds in subarctic small lakes</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>Колпакова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolpakova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Архангельск</p></bio><bio xml:lang="en"><p>Elena S. Kolpakova</p><p>Arkhangelsk</p></bio><email xlink:type="simple">kolpelen@yandex.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>Вельямидова</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Velyamidova</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Архангельск</p></bio><bio xml:lang="en"><p>Anna V. Velyamidova</p><p>Arkhangelsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБУН Федеральный исследовательский центр комплексного изучения Арктики имени академика Н.П. Лаверова УрО РАН<country>Россия</country></aff><aff xml:lang="en">N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>10</day><month>07</month><year>2020</year></pub-date><volume>66</volume><issue>2</issue><fpage>180</fpage><lpage>197</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колпакова Е.С., Вельямидова А.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Колпакова Е.С., Вельямидова А.В.</copyright-holder><copyright-holder xml:lang="en">Kolpakova E.S., Velyamidova A.V.</copyright-holder><license 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.aaresearch.science/jour/article/view/256">https://www.aaresearch.science/jour/article/view/256</self-uri><abstract><p>Статья посвящена изучению поведения хлорорганических соединений (ХОС) в специфических условиях субарктических водоемов Большеземельской тундры (на примере малых озер гидротермального урочища Пымвашор и сопредельной территории, бассейн р. Адзьва). Впервые для озерных экосистем района исследования получены данные по количественному содержанию, особенностям распределения и компонентному составу ХОС в течение исторического периода формирования осадочной толщи. Рассмотрено влияние микроклиматических условий гидротермальной системы на состав и распределение в осадках индивидуальных ХОС, отличающихся по физико-химическим свойствам и происхождению. Установлено, что присутствие в донных осадках хлорфенольных соединений обусловлено протеканием естественных энзиматических и биохимических процессов в компонентах водных экосистем. Показано, что ввиду удаленности района исследования присутствие и уровни стойких хлорорганических загрязнителей в осадках связаны с поступлением атмосферным переносом от источников антропогенного (техногенного) воздействия из близлежащих регионов и с территорий в низких широтах.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the results of studies of the environmental properties of organochlorines which differ in properties and origin, in the lake ecosystems of the Bolshezemelskaya tundra (Nenets Autonomous Okrug, Russia). The purpose of this study was to evaluate and assess the levels, distribution characteristics and composition of organochlorines in the bottom sediments of small lakes located in the Adzva river basin in Pymvashor natural boundary (the northernmost location of the exit of thermal-mineral springs of the continental Europe) and in the adjacent area, outside this unique subarctic hydrothermal zone.</p><p>In order to meet this goal, multi-method (hydrochemical, geochemical, etc.) research was carried out using standard generally approved laboratory practices with their adaptation to the study goals. The quantitative content and composition of the target individual organochlorines were determined by gas chromatographic method with electron-capture detection.</p><p>The presence of chlorophenol compounds and polychlorinated benzenes (including persistent organic pollutants) was shown in the lakes sediments. The influence of specific microclimatic conditions of subarctic hydrothermal system on the composition and distribution of chlorophenol compounds in lake sediments was considered. In the small lake sediment core in Pymvashor natural boundary a reducing trend in the levels of organochlorines with depth has been recorded (conditioned among other things by the lithological features of bottom sediments). The chlorophenol compounds were found at highest concentrations (619.3–765.5 ng/g) in the sediment upper layers, rich in organic matter; chlorophenol composition was represented mainly by chlorinated phenols, most likely of biotic origin. A lower concentration (185.0 ng/g) of chlorophenol compounds of predominantly abiogenic origin was determined in the lake sediments outside hydrothermal system. The presence and levels of persistent organochlorine pollutants (pentachlorophenol 0.1–2.4 ng/g; hexa- and pentachlorobenzenes 0.4–3.6 ng/g) in the lake sediments were associated with long-range atmospheric transport from various origin sources in nearby regions and low-latitude territories.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>газовая хроматография</kwd><kwd>донные осадки</kwd><kwd>малые озера</kwd><kwd>стойкие органические загрязнители</kwd><kwd>субарктическая гидротермальная система</kwd><kwd>урочище Пымвашор</kwd><kwd>хлорорганические соединения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>bottom sediments</kwd><kwd>chlorophenols</kwd><kwd>gas chromatography</kwd><kwd>persistent organic pollutants</kwd><kwd>polychlorobenzenes</kwd><kwd>Pymvashor natural boundary</kwd><kwd>small lakes</kwd><kwd>subarctic hydrothermal system</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена за счет средств Минобрнауки РФ проект № АААА-А18-118012390167-1 «Изучение закономерностей биогеохимических процессов циклов хлора и серы в экосистемах Арктики и Субарктики под влиянием природных и техногенных факторов».</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>This work was carried out at the expense of the Ministry of Education and Science of the Russian Federation, project No. AAAA-A18-118012390167-1 “Study of biogeochemical process pattern of chlorine and sulfur cycles in the ecosystems of the Arctic and Subarctic under the influence of natural and industry-related factors”.</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">Ивантер В.В. 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