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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">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2019-85-10-23-28</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1080</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>АНАЛИЗ ВЕЩЕСТВА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SUBSTANCES ANALYSIS</subject></subj-group></article-categories><title-group><article-title>Фотометрическое определение микроколичеств меди (II) в пирите</article-title><trans-title-group xml:lang="en"><trans-title>Photometric determination of copper (II) microquantities in pyrite</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>Алиева</surname><given-names>Ф. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Aliyeva</surname><given-names>F. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фаргана Сафар Алиева</p><p>AZ 1148, Баку, ул. З. Халилова, 23</p></bio><bio xml:lang="en"><p>Farqana S. Aliyeva</p><p>Z. Khalilov str. 23, Baku, AZ 1148</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>Мамедова</surname><given-names>Ф. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamedova</surname><given-names>F. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фарида Октай Мамедова</p><p>AZ2001, Гянджа, пр. Гейдара Алиева, 425</p></bio><bio xml:lang="en"><p>Farida O. Mamedova</p><p>425 Heydar Aliyev Ave, Ganja, AZ2001</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бахманова</surname><given-names>Ф. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Bahmanova</surname><given-names>F. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фидан Нариман Бахманова</p><p>AZ 1148, Баку, ул. З. Халилова, 23</p></bio><bio xml:lang="en"><p>Fidan N. Bahmanova</p><p>Z. Khalilov str. 23, Baku, AZ 1148</p></bio><email xlink:type="simple">fidan_chem@rambler.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>Юсибов</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yusibov</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юсиф Амиралы Юсибов</p><p>AZ2001, Гянджа, пр. Гейдара Алиева, 425</p></bio><bio xml:lang="en"><p>Yusif Amiraly Yusibov</p><p>25 Heydar Aliyev Ave, Ganja, AZ2001</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чырагов</surname><given-names>Ф. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Chyragov</surname><given-names>F. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фамиль Муса Чырагов1</p><p>AZ 1148, Баку, ул. З. Халилова, 23</p></bio><bio xml:lang="en"><p>Famil M. Chyragov</p><p>Z. Khalilov str. 23, Baku, AZ 1148</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Бакинский Государственный Университет</institution><country>Азербайджан</country></aff><aff xml:lang="en"><institution>Baku State University</institution><country>Azerbaijan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Гянджинский Государственный Университет</institution><country>Азербайджан</country></aff><aff xml:lang="en"><institution>Ganja State University</institution><country>Azerbaijan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>29</day><month>10</month><year>2019</year></pub-date><volume>85</volume><issue>10</issue><fpage>23</fpage><lpage>28</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Алиева Ф.А., Мамедова Ф.О., Бахманова Ф.Н., Юсибов Ю.А., Чырагов Ф.М., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Алиева Ф.А., Мамедова Ф.О., Бахманова Ф.Н., Юсибов Ю.А., Чырагов Ф.М.</copyright-holder><copyright-holder xml:lang="en">Aliyeva F.S., Mamedova F.O., Bahmanova F.N., Yusibov Y.A., Chyragov F.M.</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://www.zldm.ru/jour/article/view/1080">https://www.zldm.ru/jour/article/view/1080</self-uri><abstract><p>На основе синтезированного по известной методике 3-[4-карбоксифенилазо]пентадиона-2,4 была получена 4-(2,4-бис((2-аминоэтил)имино)пентан-3-ил)диазенил)бензойная кислота (R). Состав и строение синтезированного реагента установлены методами элементного анализа и ЯМР-спектроскопии. Спектрофотометрическим методом изучено комплексообразование меди (II) с R в присутствии 8-гидроксихинолина (Ox), дифенилгуанидина (ДФГ) и этилендиамина (ЭД). Найдены оптимальные условия комплексообразования и установлен состав однородно- и разнолигандных комплексов. При взаимодействии меди (II) c R при pH 3 – 10 максимальный выход комплекса наблюдается при pH 5 (λmax = = 553 нм). Определены молярные коэффициенты поглощения и константы устойчивости комплексов меди (II). Установлена область подчинения закону Бера. В присутствии Ох, ДФГ и ЭД оптическая плотность растворов комплекса значительно возрастает, а оптимальное значение pH комплексообразования смещается в кислую область: pH = 2 – 3. Максимумы светопоглошения разнолигандных комплексов наблюдаются при 564 нм (CuR2-Ox), 568 нм (CuR2-ДФГ) и 576 нм (CuR2-Эд). Сравнение констант устойчивости однородно- и разнолигандных комплексов Cu (II) показывает, что CuR2-ЭД более устойчив, чем другие исследуемые комплексы. Изучено влияние посторонних ионов и маскирующих веществ на комплексообразование: из сравнения исследованного реагента для определения меди (II) с известными из литературы видно, что предложенный реагент более избирателен. Высокая избирательность изученных реакций позволила разработать экспрессную методику фотометрического определения меди (II) в пирите.</p></abstract><trans-abstract xml:lang="en"><p>4-(2, 4-bis((2-aminoethyl)-imino)pentane-3-yl)diazenyl)benzoic acid was synthesized using 3-[4-carboxyphenylazo]pentanedione-2,4 (R) reagent obtained by the standard procedure. The composition and structure of the synthesized reagent is determined by the methods of elemental analysis and NMR spectroscopy. The complexation of copper (II) with 3-[4-carboxyphenylazo]pentanedione-2,4 (R) in the presence and in the absence of 8-hydroxyquinoline, diphenylguanidine and ethylenediamine was studied spectrophotometrically. Optimal conditions for complexation are specified and composition of homo- and mixed-ligand complexes are determined. When copper (II) interacts with R at pH 3 – 10, the maximum yield of the complex compound is observed at pH 5 λmax = 553 nm. The molar absorption coefficients and the stability constants of copper (II) complexes were determined. A range in which Beer’s law is valid is determined. Study of the complex with 8-hydroxyquinoline (Ox), diphenylguanidine (DPG) and ethylenediamine (ED) present showed that under the effect of these compounds, the optical density of the complex solutions significantly increases and the pH value of the medium providing optimal complexing shifts to the acidic region: pH 2 – 3. The maxima of the absorption of mixed-ligand complexes are observed at λ = 564 nm (CuR2-Ox), λ = 568 nm (CuR2-DFG), λ = 576 nm (CuR2-Ed). Comparison of the values of the stability constants of homo- and mixed-ligand Cu (II) complexes shows that CuR2-ED is more stable than the other ones under study. The effect of foreign ions and masking substances on complexation was studied. The selectivity of the obtained reagent for copper (II) determination, compared to the reagents of the same duty known from the literature appeared advantageous. The high selectivity of the studied reactions provided developing of a rapid method for copper determination in rocks. A procedure for the spectrophotometric determination of copper (II) in pyrite is developed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>фотометрия</kwd><kwd>комплексообразование</kwd><kwd>медь (II)</kwd><kwd>смешанно-лигандные комплексы</kwd><kwd>пирит</kwd><kwd>3-[4-карбоксифенилазо]пентадион-2</kwd><kwd>4</kwd><kwd>8-дигидроксихинолин</kwd><kwd>дифенилгуанидин</kwd><kwd>этилендиамин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>photometry</kwd><kwd>complexation</kwd><kwd>copper (II)</kwd><kwd>mixed ligand complexes</kwd><kwd>pyrite</kwd><kwd>3-[4-carboxyphenylazo]pentanedione-2</kwd><kwd>4</kwd><kwd>8-hydroxyquinoline</kwd><kwd>diphenylguanidine</kwd><kwd>ethylenediamine</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">Okiei W., Ogunlesi M., Adio-Adepoju A., Oluboyo M. 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