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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-133</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>ИСПОЛЬЗОВАНИЕ ЧАСТИЧНОЙ РЕГРЕССИИ МЕТОДОМ НАИМЕНЬШИХ КВАДРАТОВ ДЛЯ КАЛИБРОВКИ СПЕКТРОФОТОМЕТРА, ИЗМЕРЯЮЩЕГО ХИМИЧЕСКУЮ ПОТРЕБНОСТЬ В КИСЛОРОДЕ СТОЧНЫХ ВОД ПРИ ПРОИЗВОДСТВЕ КРАСИТЕЛЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>PARTIAL LEAST SQUARES REGRESSION CALIBRATION OF AN ULTRAVIOLET-VISIBLE SPECTROPHOTOMETER FOR MEASUREMENTS OF CHEMICAL OXYGEN DEMAND IN DYE WASTEWATER</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>Mai</surname><given-names>W. .</given-names></name><name name-style="western" xml:lang="en"><surname>Mai</surname><given-names>W. .</given-names></name></name-alternatives><email xlink:type="simple">399 Binshuiwest Road. Xiqing District. Tianjin 300387. China</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>Zhang</surname><given-names>J. -F.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhang</surname><given-names>J. -F.</given-names></name></name-alternatives><email xlink:type="simple">399 Binshuiwest Road. Xiqing District. Tianjin 300387. China</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>Zhao</surname><given-names>X. -M.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhao</surname><given-names>X. -M.</given-names></name></name-alternatives><email xlink:type="simple">tjpu_zhao@163.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>Li</surname><given-names>Z. .</given-names></name><name name-style="western" xml:lang="en"><surname>Li</surname><given-names>Z. .</given-names></name></name-alternatives><email xlink:type="simple">399 Binshuiwest Road. Xiqing District. Tianjin 300387. China</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>Xu</surname><given-names>Z. -W.</given-names></name><name name-style="western" xml:lang="en"><surname>Xu</surname><given-names>Z. -W.</given-names></name></name-alternatives><email xlink:type="simple">399 Binshuiwest Road. Xiqing District. Tianjin 300387. China</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Школа текстиля, Тяньцзиньский политехнический университет</institution></aff><aff xml:lang="en"><institution>School of Textiles, Tianjin Polytechnic University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2020</year></pub-date><volume>84</volume><issue>5</issue><fpage>746</fpage><lpage>752</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Mai W..., Zhang J.-., Zhao X.-., Li Z..., Xu Z.-., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Mai W..., Zhang J.-., Zhao X.-., Li Z..., Xu Z.-.</copyright-holder><copyright-holder xml:lang="en">Mai W..., Zhang J.-., Zhao X.-., Li Z..., Xu 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://zhps.ejournal.by/jour/article/view/133">https://zhps.ejournal.by/jour/article/view/133</self-uri><abstract><p>Сточные воды, образующиеся при производстве красителей, обычно анализируются стандартным методом измерения химической потребности в кислороде (ХПК) или одноволновым спектроскопическим методом. Чтобы преодолеть недостатки этих методов, в настоящей работе спектроскопия в УФ и видимой областях объединена с регрессией по основному компоненту и частичной регрессией методом наименьших квадратов (ЧРМНК). В отличие от стандартного метода этот метод не требует предварительной подготовки образцов. Показано, что модель ЧРМНК обеспечивает высокую точность прогнозирования ХПК со средней относительной погрешностью ~5 % для случая двух красителей. Эта ошибка близка к ошибке стандартного метода. В наших исследованиях точность модели ЧРМНК уменьшалась с числом присутствующих красителей. Вероятно, понадобятся несколько моделей, и сложность системы мониторинга ХПК будет значительно уменьшена, если использовать модель ЧРМНК, поскольку она может включать в себя несколько красителей. Спектроскопия в УФ и видимой областях в сочетании с ЧРМНК повышает эффективность прогнозирования ХПК для сточных вод красильной промышленности и перспективна для применения в мониторинге качества воды в режиме реального времени.</p></abstract><trans-abstract xml:lang="en"><p>Wastewater from the dye industry is typically analyzed using a standard method for measurement of chemical oxygen demand (COD) or by a single-wavelength spectroscopic method. To overcome the disadvantages of these methods, ultraviolet-visible (UV-Vis) spectroscopy was combined with principal component regression (PCR) and partial least squares regression (PLSR) in this study. Unlike the standard method, this method does not require digestion of the samples for preparation. Experiments showed that the PLSR model offered high prediction performance for COD, with a mean relative error of about 5% for two dyes. This error is similar to that obtained with the standard method. In this study, the precision of the PLSR model decreased with the number of dye compounds present. It is likely that multiple models will be required in reality, and the complexity of a COD monitoring system would be greatly reduced if the PLSR model is used because it can include several dyes. UV-Vis spectroscopy with PLSR successfully enhanced the performance of COD prediction for dye wastewater and showed good potential for application in on-line water quality monitoring. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>сточные воды красильной промышленности</kwd><kwd>спектрофотометр для ультрафиолетовой и видимой областей спектра</kwd><kwd>химическая потребность в кислороде</kwd><kwd>частичная регрессия на основе метода наименьших квадратов</kwd><kwd>dye wastewater</kwd><kwd>UV-Vis spectrophotometer</kwd><kwd>chemical oxygen demand</kwd><kwd>partial least squares regression</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">S. K. A. Solmaz, A. Birgül, G. E. Üstün, T. Yonar, Color. Technol., 122, 102-109 (2006).</mixed-citation><mixed-citation xml:lang="en">S. K. A. Solmaz, A. Birgül, G. E. Üstün, T. Yonar, Color. 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