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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-828</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>Оценка беcкалибровочного и многомерного метода количественного анализа в лазерно-искровой эмиссионной спектроскопии</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of the Calibration-Free and Multivariate Method for Quantitative Analysis in Laser-Induced Breakdown Spectroscopy</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>Kumar</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Kumar</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Праяградж, 211002.</p></bio><bio xml:lang="en"><p>Prayagraj, 211002.</p></bio><email xlink:type="simple">rohit.02dec@gmail.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>Maurya</surname><given-names>G. S.</given-names></name><name name-style="western" xml:lang="en"><surname>Maurya</surname><given-names>G. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Канпур, 208016.</p></bio><bio xml:lang="en"><p>Kanpur, 208016.</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>Devanathan</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Devanathan</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мумбаи, 400085.</p></bio><bio xml:lang="en"><p>Mumbai, 400085.</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Rai</surname><given-names>А. K.</given-names></name><name name-style="western" xml:lang="en"><surname>Rai</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Праяградж, 211002.</p></bio><bio xml:lang="en"><p>Prayagraj, 211002.</p></bio><email xlink:type="simple">awadheshkrai@gmail.com</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Колледж Чоудхари Махадео Прасад Аллахабадского университета</institution></aff><aff xml:lang="en"><institution>Department of Physics, Chaudhary Mahadeo Prasad College at University of Allahabad</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Индийский технологический институт Канпура</institution></aff><aff xml:lang="en"><institution>Ultrafast Spectroscopy Lab., Department of Chemistry, Indian Institute of Technology Kanpur</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Центр атомных исследований Бхабха</institution></aff><aff xml:lang="en"><institution>Fuel Chemistry Division, Bhabha Atomic Research Center</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Аллахабадский университет</institution></aff><aff xml:lang="en"><institution>Laser Spectroscopy Research Laboratory, Department of Physics at University of Allahabad</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>29</day><month>05</month><year>2021</year></pub-date><volume>88</volume><issue>3</issue><fpage>462</fpage><lpage>470</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kumar R., Maurya G.S., Devanathan А., Rai А.K., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Kumar R., Maurya G.S., Devanathan А., Rai А.K.</copyright-holder><copyright-holder xml:lang="en">Kumar R., Maurya G.S., Devanathan A., Rai A.K.</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/828">https://zhps.ejournal.by/jour/article/view/828</self-uri><abstract><p>Бескалибровочный метод лазерно-искровой эмиссионной спектроскопии (CF-LIBS) используется для определения концентрации компонентов образцов, поскольку преодолевает ограничение, связанное с необходимостью соответствия матриц стандартного и исследуемого вещества при построении калибровочной кривой. Эффективность такого подхода часто ставится под сомнение. Для проверки возможностей методологии CF-LIBS использованы различные сертифицированные стандартные образцы растений и почвы. Если эмиссионные линии элемента отсутствуют в спектрах LIBS, его вклад в результат CF-LIBS также отсутствует, что приводит к неправильной количественной оценке. Для преодоления этой проблемы в CF-LIBS вместо определения только концентраций элементов вводится дополнительный этап — расчет отношений концентраций всех элементов к концентрации базового элемента. Расчетные отношения концентраций для различных элементов более точны, чем концентрации элементов, полученные с помощью CF-LIBS. Для предсказания концентрации наряду с CF-LIBS применен подход частичной регрессии наименьших квадратов.</p></abstract><trans-abstract xml:lang="en"><p>The calibration-free laser-induced breakdown spectroscopy (CF-LIBS) method is used to obtain the concentration of the constituents of samples because it overcomes the limitation of matrix-matched standards in the calibration curve method of quantification. However, there are often doubts that remain about the efficiency of the CF-LIBS method. Hence, in the present work, different certified reference materials (CRMs) of plants and soil were employed to check the capabilities of the CF-LIBS method. If the emission lines of an element are missing in the LIBS spectra, its contribution in the CF-LIBS result will be missing as well, which leads to incorrect quantification. Therefore, in order to overcome this problem in CF-LIBS, instead of only determining the elemental concentrations, an additional step to calculate the concentration ratio of all elements with respect to the concentration of a major element was added. The calculated concentration ratios for different elements are more accurate than the elemental concentration obtained by CF-LIBS. Along with the CF-LIBS method, the partial least square regression (PLSR) approach was also applied for the prediction of the concentration.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>бескалибровочный метод лазерно-искровой эмиссионной спектроскопии</kwd><kwd>аттестованные стандартные образцы</kwd><kwd>аналитическая точность</kwd><kwd>частичная регрессия методом наименьших квадратов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>calibration-free laser-induced breakdown spectroscopy</kwd><kwd>certified reference materials</kwd><kwd>analytical accuracy</kwd><kwd>partial least square regression</kwd></kwd-group><funding-group><funding-statement xml:lang="en">UGC-BSR project No. F.30-461/2019(BSR) is acknowledged for the startup grant. The Board of Research in Fusion Science and Technology (BRFST), Institute for Plasma Research, Gandhinagar, Gujarat, India is also gratefully acknowledged for financial assistance under Project No. “NFPDIAG-F11-03”. 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