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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">kaz65</journal-id><journal-title-group><journal-title xml:lang="ru">Почвоведение и агрохимия</journal-title><trans-title-group xml:lang="en"><trans-title>Soil Science and Agrichemistry</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1999-740X</issn><issn pub-type="epub">2959-3433</issn><publisher><publisher-name>Казахский научно-исследовательский институт почвоведения и агрохимии имени У.У. Успанова</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">kaz65-433</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="en"><subject>SOIL POLLUTION AND REMEDIATION</subject></subj-group></article-categories><title-group><article-title></article-title><trans-title-group xml:lang="en"><trans-title>CONCENTRATION AND SPATIAL DISTRIBUTION OF TOTAL AND BIOAVAILABLE HEAVY METALS IN TOP SOILS IN TAHAM DISTRICT OF ZANJAN PROVINCE-IRAN</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Abdolhossein</surname><given-names>Parizanganeh</given-names></name></name-alternatives><email xlink:type="simple">h zansaneh@znu.ac.ir</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Robab</surname><given-names>Saberinia</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Ali</surname><given-names>Hajabolfath</given-names></name></name-alternatives><email xlink:type="simple">h_zanganeh@znu.ac.ir</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Abbas</surname><given-names>Ali Zamani</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="en">Department of Environmental Science, Faculty of Science<country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="en">department of Geology, Faculty of Science, University of Zanjan<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>07</day><month>11</month><year>2022</year></pub-date><volume>0</volume><issue>4</issue><fpage>87</fpage><lpage>98</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Abdolhossein P., Robab S., Ali H., Abbas A.Z., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Abdolhossein P., Robab S., Ali H., Abbas A.Z.</copyright-holder><copyright-holder xml:lang="en">Abdolhossein P., Robab S., Ali H., Abbas A.Z.</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://journal.soil.kz/jour/article/view/433">https://journal.soil.kz/jour/article/view/433</self-uri><abstract><p>Токсичные элементы, такие как тяжелые металлы, являются естественными составляющими земной коры и некоторые из этих элементов являются биологически важными на уровне микроэлементов и играют важную роль в укреплении здоровья человека. Загрязнение почвы тяжелыми металлами является широко распространенной проблемой в Зенджанской провинции, которая находится на северо-западе Ирана. Вследствие естественного педогеохимического фона и антропогенных источников Taхамский район был выбран для детального изучения и были установлены задачи исследования по оценке общей, а также биодоступной фракции тяжелых металлов в поверхностных горизонтах почв. Было отобрано 57 образцов с поверхности почвы, которые были проанализированы на предмет загрязнения тяжелыми металлами при помощи атомно-абсорбционной спектрометрии (ААС). Полученные результаты, по сравнению со стандартами ВОЗ и EPA показывают очень высокую концентрацию некоторых токсичных металлов в частности, As, Pb и Cd. Биодоступную часть исследованных металлов также измеряли при помощи формации комплекса металлов с веществом Диэтилен Три Амин Пента Кислотой (DTPA). Чтобы определить долю антропогенных источников в загрязнении почв были измерены коэффициент обогащения (EF) и индекс геологического накопления, а также были созданы карты их распределения с помощью Arc GIS 9.3. Высокие концентрации некоторых токсичных металлов, таких как As, Pb и Cd были найдены в изолированных пятнах на северо-западе, востоке и юго-западе изучаемой территории, происхождение которых связано с почвообразующими и антропогенными источниками. Загрязнение почвы металлами было очень высоким вокруг промышленного города и сельскохозяйственных угодий в пределах изучаемой территории. Наиболее эффективные факторы, вызывающие высокую концентрацию других элементов, таких как Cu, Co, Ni и Fe в почве имели почвообразующую природу.</p></abstract><trans-abstract xml:lang="en"><p>Toxic elements like heavy metals are natural constituents of the earth's crust and a number of these elements are biologically essential at trace levels and play an important role in human health. Heavy metal contamination of soil is a widespread problem in Zanjan province located in North West Iran due to natural pedogeochemical background and anthropogenic sources. Taham district was selected for detail study and the objectives of the study were set to evaluate the total as well as bioavailable fraction of heavy metals in surficial soils within the studied area. 57 surficial soil samples were collected and analyzed for heavy metal contamination by Atomic Absorption Spectrometry (AAS). The obtained results when compared with WHO and EPA standards show a very high concentration of some toxic metals notably As, Pb and Cd. Bioavilable fraction of studied metals was also measured with formation of metal complex with Diethylene Tri Amine Penta Acid (DTPA) agent. To find the share of the anthropogenic sources in the contamination of soils, the Enrichment factor (Ef) and Geological accumulation index were measured and the distribution maps were drawn using Arc GIS (9.3). High concentrations of some toxic metals like As, Pb and Cd were found in isolated patches in North West, East and South West of the studied area originating both from pedogenic as well as anthropogenic sources. Soil contamination by metals was very high around industrial town and agricultural lands within the studied area. The most effective factors responsible for high concentrations of other elements like Cu, Co, Ni and Fe in soil were found to be pedogenic in nature.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Abbasi, M., Mohammadi, H., Peyda, M., 2000. Heavy Metal Contamination of Surface-water and Groundwater ofVicinity Region of Zanjan Zinc and Lead Smelting Plant. Research report, Zanj an Department of the Environment.</mixed-citation><mixed-citation xml:lang="en">Abbasi, M., Mohammadi, H., Peyda, M., 2000. 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