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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-767</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>СПЕКТРОСКОПИЧЕСКОЕ ОПРЕДЕЛЕНИЕ МЕТФОРМИНА В ПИТЬЕВОЙ ВОДЕ, ТАБЛЕТКАХ, СЫВОРОТКЕ КРОВИ И УРИНЕ ЧЕЛОВЕКА НА ОСНОВЕ АГРЕГАЦИИ НАНОЧАСТИЦ</article-title><trans-title-group xml:lang="en"><trans-title>SPECTROSCOPY DETERMINATION OF METFORMIN IN DRINKING WATER, TABLET, HUMAN SERUM, AND URINE BASED ON THE AGGREGATION OF NANOPARTICLES</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>Moradi</surname><given-names>M.</given-names></name><name name-style="western" xml:lang="en"><surname>Moradi</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Sohrabi</surname><given-names>M. R.</given-names></name><name name-style="western" xml:lang="en"><surname>Sohrabi</surname><given-names>M. R.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><email xlink:type="simple">sohrabi.m46@yahoo.com</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>Mortazavinik</surname><given-names>S.</given-names></name><name name-style="western" xml:lang="en"><surname>Mortazavinik</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Северо-Тегеранский филиал Исламского университета Азад</institution></aff><aff xml:lang="en"><institution>Department of Chemistry, North Tehran Branch at Islamic Azad University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>29</day><month>01</month><year>2021</year></pub-date><volume>88</volume><issue>1</issue><fpage>72</fpage><lpage>78</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Moradi M., Sohrabi M.R., Mortazavinik S., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Moradi M., Sohrabi M.R., Mortazavinik S.</copyright-holder><copyright-holder xml:lang="en">Moradi M., Sohrabi M.R., Mortazavinik S.</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/767">https://zhps.ejournal.by/jour/article/view/767</self-uri><abstract><p>Простой, быстрый и чувствительный метод УФ-видимой спектроскопии использован для определения предельно малых количеств метформина (MET) в питьевой воде, таблетках, сыворотке крови и урине человека без стадии предварительного концентрирования. Синтезированы наночастицы золота (AuNPs). Определение MET проводилось на основе поверхностного плазмонного резонанса на частицах AuNPs и данных о взаимодействии между MET и AuNPs. Для анализа структуры AuNPs до и после добавления MET использована просвечивающая электронная микроскопия. Распределение наночастиц по размерам исследовано с помощью динамического рассеяния света. Результаты показывают, что в присутствии MET происходит агрегация AuNPs. Ряд параметров, включая pH, концентрацию AuNPs, время контакта, ионную силу, а также влияние буфера оценены для выбора оптимальных условий. В оптимальных условиях линейный диапазон 15–300 мкг/л. Коэффициент корреляции (R2), предел обнаружения и предел количественной оценки равны 0.9918, 0.99 и 1.12 мкг/л соответственно. Исследовано влияние мешающих веществ. Предлагаемый метод пригоден и достаточно точен для определения MET.</p></abstract><trans-abstract xml:lang="en"><p>Simple, rapid, and sensitive ultraviolet-visible spectroscopy method was used to determine ultra-trace amounts of metformin (MET) in several samples such as drinking water, tablet, serum (blood), and urine without preconcentration step. Gold nanoparticles (AuNPs) were synthesized, and determination of MET was carried out based on the surface plasmon resonance property of AuNPs and the interaction between MET and AuNPs. Transmission electron microscopy (TEM) was utilized to characterize the structure of AuNPs before and after addition MET. Also, dynamic light scattering was used to investigate the size of nanoparticles distribution. The results showed that AuNPs were aggregated in the presence of the MET. Some parameters, including pH, AuNPs concentration, contact time, buffers, and ionic strength, were evaluated to select optimum conditions. Linear range obtained was 15–300 μg/L in the optimum conditions. Also, the correlation coefficient (R2), the limit of detection, and limit of quantification were equal to 0.9918, 0.99, and 1.12 μg/L, respectively. In addition, the effect of interfering species was investigated. Finally, the results of the analysis of different real samples indicated that the proposed method was suitable and accurate for determination of MET.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>спектроскопия</kwd><kwd>ультраследовые концентрации</kwd><kwd>метформин</kwd><kwd>наночастицы золота</kwd><kwd>поверхностный плазмонный резонанс</kwd><kwd>реальные образцы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>spectroscopy</kwd><kwd>ultra-trace</kwd><kwd>metformin</kwd><kwd>gold nanoparticles</kwd><kwd>surface plasmon resonance</kwd><kwd>real samples</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">C. Goedecke, I. Fettig, C. Piechotta, R. Philipp, S. U. Geissen, Anal. Methods, 9, 1580–1584 (2017).</mixed-citation><mixed-citation xml:lang="en">C. Goedecke, I. Fettig, C. Piechotta, R. Philipp, S. U. Geissen, Anal. 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