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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-1305</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>АННОТАЦИИ АНГЛОЯЗЫЧНЫХ СТАТЕЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ABSTRACTS ENGLISH-LANGUAGE ARTICLES</subject></subj-group></article-categories><title-group><article-title>Одновременное разделение/преконцентрирование и определение ионов свинца в пробах воды методом атомно-абсорбционной спектрометрии в графитовой печи</article-title><trans-title-group xml:lang="en"><trans-title>Simultaneous Green Separation/Preconcentration and Determination of Lead Ions in Water Samples Via Graphite Furnace Atomic Absorption Spectrometry</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>Kalantari</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalantari</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Kalantari Rosa.</p><p>Варамин</p></bio><bio xml:lang="en"><p>Rosa Kalantari.</p><p>Varamin</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Moghimi</surname><given-names>A.</given-names></name><name name-style="western" xml:lang="en"><surname>Moghimi</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Moghimi Ali.</p><p>Варамин</p></bio><bio xml:lang="en"><p>Ali Moghimi.</p><p>Varamin</p></bio><email xlink:type="simple">alimoghimi@iauvaramin.ac.ir</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>Azizinezhad</surname><given-names>F.</given-names></name><name name-style="western" xml:lang="en"><surname>Azizinezhad</surname><given-names>F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Azizinezhad Fariborz.</p><p>Варамин</p></bio><bio xml:lang="en"><p>Fariborz Azizinezhad.</p><p>Varamin</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Исламский университет Азад</institution></aff><aff xml:lang="en"><institution>Department of Chemistry, Varamin Pishva Branch, Islamic Azad University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>31</day><month>05</month><year>2023</year></pub-date><volume>90</volume><issue>3</issue><fpage>526</fpage><lpage>10</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kalantari R., Moghimi A., Azizinezhad F., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Kalantari R., Moghimi A., Azizinezhad F.</copyright-holder><copyright-holder xml:lang="en">Kalantari R., Moghimi A., Azizinezhad F.</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://zhps.ejournal.by/jour/article/view/1305">https://zhps.ejournal.by/jour/article/view/1305</self-uri><abstract><p>Композит магнитного оксида графена, функционализированный хитозаном, использован для предварительного концентрирования, разделения и определения следовых количеств ионов свинца (Pb2+) в водных образцах. Концентрация Pb2+ в водных растворах определена с помощью атомно-абсорбционной спектрометрии с графитовой печью. В качестве хелатирующего агента применен диэтилдитиокарбамат натрия. ИК-Фурье-спектроскопия, рентгеновская дифракция, термогравиметрический анализ, вибрационная магнитометрия и сканирующая электронная микроскопия использованы для характеристики магнитных свойств, морфологии поверхности и химической структуры синтезированного композита. Оценены и оптимизированы факторы, влияющие на эффективность извлечения. В оптимальных условиях предел линейности определения концентрации ионов Pb2+ 0.70-100.00 мкг/л с коэффициентом корреляции 0.9981, пределы количественного определения и обнаружения 0.73 и 0.21 мкг/л, коэффициент концентрирования 40, коэффициент повторяемости метода 2.58 % (RSD%). Изучены изотермические модели, проведены термодинамические исследования. Предлагаемый метод эффективен и обладает высокой чувствительностью, экономичностью, возможностью быстрого и легкого разделения, а также экологичностью при определении следовых количеств ионов Pb2+ в различных водных образцах.</p></abstract><trans-abstract xml:lang="en"><p>A chitosan-functionalized magnetic graphene oxide composite was used to preconcentrate, separate, and determine the trace amounts of lead ions (Pb2+) in aqueous samples. Graphite furnace atomic absorption spectrometry was applied to determine Pb2+ concentration in aqueous solutions. Sodium diethyldithiocarbamate was applied as a chelating agent in this study. Fourier transform infrared spectra, X-ray diffraction, thermogravimetric analysis, vibrating sample magnetometer, and scanning electron microscope were applied to characterize the magnetic properties, surface morphology, and chemical structure of the synthesized composite. Factors that affected extraction efficiency were evaluated and optimized. Under optimal conditions, the linearity limit for the determination of Pb2+ ion concentration was 0.70-100.00 μg-L with a correlation coefficient of 0.9981. The quantitation and detection limits were 0.73 and 0.21 μg/L, respectively. The value of the preconcentration factor was found to be 40, and the repeatability coefficient of the proposed method was calculated as 2.58% (RSD%). Further, the isothermal models, kinetic data, and thermodynamic studies were investigated. Overall, the proposed method is an effective technique with many advantages such as high sensitivity, economical procedure, fast and easy separation ability with excellent recovery, and being environmentally friendly to determine trace amounts of Pb2+ ions in various aqueous samples.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>магнитная сепарация</kwd><kwd>биосорбент</kwd><kwd>ионы свинца</kwd><kwd>пробы воды</kwd><kwd>адсорбция</kwd><kwd>атомно-абсорбционная спектрометрия с графитовой печью</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnetic separation</kwd><kwd>biosorbent</kwd><kwd>lead ions</kwd><kwd>water samples</kwd><kwd>adsorption</kwd><kwd>Graphite furnace atomic absorption spectrometry</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The current study was supported by Islamic Azad University, Varamin Pishva Branch.</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">Q. 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