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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-628</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>АНАЛИЗ ПОЧВ С ИСПОЛЬЗОВАНИЕМ ЛАЗЕРНО-ИНДУЦИРОВАННОЙ ИСКРОВОЙ СПЕКТРОСКОПИИ И ХЕМОМЕТРИКИ</article-title><trans-title-group xml:lang="en"><trans-title>QUALITATIVE AND QUANTITATIVE ANALYSIS OF SOILS USING LASER-INDUCED BREAKDOWN SPECTROSCOPY AND CHEMOMETRICS TOOLS</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>Costa</surname><given-names>V. C.</given-names></name><name name-style="western" xml:lang="en"><surname>Costa</surname><given-names>V. C.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сан-Карлос, 13565-905; Альфенас, 37130-000</p></bio><bio xml:lang="en"><p>Group of Applied Instrumental Analysis, Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo State 13565-905; </p><p>Laboratory of Toxicant and Drug Analyses (LATF), Federal University of Alfenas (Unifal),Alfenas, Minas Gerais State 37130-000</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>Dos Santos Ferreira</surname><given-names>S.</given-names></name><name name-style="western" xml:lang="en"><surname>Dos Santos Ferreira</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>45662-900, Ильеус</p></bio><bio xml:lang="en"><p>Ilhéus, Bahia State 45662-900</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>Santos</surname><given-names>L. N.</given-names></name><name name-style="western" xml:lang="en"><surname>Santos</surname><given-names>L. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>45662-900, Ильеус</p></bio><bio xml:lang="en"><p>Ilhéus, Bahia State 45662-900</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>Sperança</surname><given-names>M. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Sperança</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сан-Карлос, 13565-905</p></bio><bio xml:lang="en"><p>Group of Applied Instrumental Analysis, Department of Chemistry</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>Santos da Silva</surname><given-names>C.</given-names></name><name name-style="western" xml:lang="en"><surname>Santos da Silva</surname><given-names>C.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сан-Карлос, 13565-905</p></bio><bio xml:lang="en"><p>Group of Applied Instrumental Analysis, Department of Chemistry</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>Sodré</surname><given-names>G. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Sodré</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>45662-900, Ильеус</p></bio><bio xml:lang="en"><p>Ilhéus, Bahia State 45662-900</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>Pereira-Filho</surname><given-names>E. R.</given-names></name><name name-style="western" xml:lang="en"><surname>Pereira-Filho</surname><given-names>E. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сан-Карлос, 13565-905</p></bio><bio xml:lang="en"><p>Group of Applied Instrumental Analysis, Department of Chemistry</p></bio><email xlink:type="simple">erpf@ufscar.br</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный университет Сан-Карлос; Федеральный университет Альфенас</institution></aff><aff xml:lang="en"><institution>Federal University of São Carlos; Federal University of Alfenas (Unifal)</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Государственный университет Санта-Крус</institution></aff><aff xml:lang="en"><institution>State University of Santa Cruz</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральный университет Сан-Карлос</institution></aff><aff xml:lang="en"><institution>Federal University of São Carlos</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>08</day><month>05</month><year>2020</year></pub-date><volume>87</volume><issue>2</issue><elocation-id>348(1)-348(9)</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Costa V.C., dos Santos Ferreira S., Santos L.N., Sperança M.A., Santos da Silva C., Sodré G.A., Pereira-Filho E.R., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Costa V.C., dos Santos Ferreira S., Santos L.N., Sperança M.A., Santos da Silva C., Sodré G.A., Pereira-Filho E.R.</copyright-holder><copyright-holder xml:lang="en">Costa V.C., dos Santos Ferreira S., Santos L.N., Sperança M.A., Santos da Silva C., Sodré G.A., Pereira-Filho E.R.</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/628">https://zhps.ejournal.by/jour/article/view/628</self-uri><abstract><p>Предложен метод непосредственного определения Ca, Fe, K и Mg и качественного анализа образцов двух типов почв различной глубины (0–20 и 20–40 см) методом лазерно-индуцированной искровой спектроскопии (LIBS). Инструментальные параметры LIBS оценены с использованием центрально-композитного плана с центральной точкой. Оценены следующие переменные: время задержки на пяти уровнях (0.5, 0.7, 1.2, 1.7 и 1.9 мкс) и флюенс на пяти уровнях (1448, 1811, 2659, 3514 и 3820 Дж/см2). Наилучшие результаты получены при времени задержки 1.2 мкс и плотности потока 2659 Дж/см2. Предложенная калибровочная модель для Ca, Fe, K и Mg, полученная с использованием данных LIBS, дает хорошую корреляцию с эталонными значениями, полученными с помощью атомно-эмиссионной спектрометрии с индуктивно-связанной плазмой (ICP OES). Проведен многомерный анализ данных из спектров LIBS в области 186—1042 нм с использованием метода главных компонент (PCA). По спектрам LIBS можно выделить анализируемые образцы. Показано, что комбинация LIBS с PCA является отличным вариантом для различения почв.</p></abstract><trans-abstract xml:lang="en"><p>In the present work a method was proposed for the direct determination of Ca, Fe, K, and Mg and qualitative analysis of anthropized and cabruca soil samples from different depths (0–20 and 20–40 cm) by laser-induced breakdown spectroscopy (LIBS). The LIBS instrumental parameters were evaluated using a central composite design with a central point. The variables evaluated were as follows: delay time in five levels (0.5, 0.7, 1.2, 1.7, and 1.9 µs) and fluence at five levels (1448, 1811, 2659, 3514, and 3820 J·cm–2). The best results obtained were with a delay time of 1.2 μs and fluence of 2659 J·cm–2. The proposed calibration model for Ca, Fe, K, and Mg obtained using LIBS data presented a good correlation with the reference values obtained by inductively coupled plasma atomic emission spectrometry (ICP OES). In addition, multivariate data analysis from LIBS spectra in the region of 186–1042 nm was performed using principal component analysis (PCA). From the LIBS spectra it was possible to discriminate the different analyzed samples, showing that the combination of LIBS with PCA is an excellent option for the discrimination of soils.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>почва</kwd><kwd>лазерно-индуцированная искровая спектроскопия</kwd><kwd>хемометрический инструмент</kwd><kwd>качественный анализ</kwd><kwd>количественный анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>soil</kwd><kwd>LIBS</kwd><kwd>chemometric tools</kwd><kwd>qualitative analysis</kwd><kwd>quantitative analysis</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This study was supported by the São Paulo Research Foundation (FAPESP, 2016/01513-0) and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, 401074/2014-5, 305637/2015-0, and 160152/2015-1). 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