<?xml version="1.0" encoding="ISO-8859-1"?><article 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">
<front>
<journal-meta>
<journal-id>2221-2442</journal-id>
<journal-title><![CDATA[Revista CENIC Ciencias Químicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. CENIC Cienc. Quím.]]></abbrev-journal-title>
<issn>2221-2442</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Investigaciones Científicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2221-24422022000300120</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Paul-Émile (François) Lecoq de Boisbaudran (1838-1912) - the Important French chemist of the Second Half of the XIX Century and the First Decade of the XX Century]]></article-title>
<article-title xml:lang="es"><![CDATA[Paul-Émile (François) Lecoq de Boisbaudran (1838-1912) - el importante químico francés de la segunda mitad del siglo XIX y la primera década del siglo XX]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sztejnberg]]></surname>
<given-names><![CDATA[Aleksander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Opole  ]]></institution>
<addr-line><![CDATA[ Oleska]]></addr-line>
<country>Poland</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>53</volume>
<fpage>120</fpage>
<lpage>134</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2221-24422022000300120&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2221-24422022000300120&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2221-24422022000300120&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Paul-Émile (François) Lecoq de Boisbaudran (1838-1912) was an important French chemist in the second half of the XIX century and the first decade of the XX century. He was one of the founders of spectroscopy. He discovered gallium (1875), samarium (1879), and dysprosium (1886) and improved methods for the separation of rare earths elements. The purpose of this paper is to familiarize readers with the important events in the life of Lecoq de Boisbaudran and his great discoveries. In addition, literature on his selected papers and books, as well as literature on his chapters in books is presented.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Paul-Émile (François) Lecoq de Boisbaudran (1838-1912) fue un importante químico francés de la segunda mitad del siglo XIX y la primera década del siglo XX. Fue uno de los fundadores de la espectroscopia. Descubrió el galio (1875), el samario (1879) y el disprosio (1886) y mejoró los métodos para la separación de elementos de tierras raras. El propósito de este artículo es familiarizar a los lectores con los acontecimientos importantes de la vida de Lecoq de Boisbaudran y sus grandes descubrimientos. Además, se presenta literatura sobre sus artículos y libros seleccionados, así como literatura sobre sus capítulos en los libros.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[P.-É. Lecoq de Boisbaudran]]></kwd>
<kwd lng="en"><![CDATA[Gallium]]></kwd>
<kwd lng="en"><![CDATA[Samarium]]></kwd>
<kwd lng="en"><![CDATA[Dysprosium and Gadolinium]]></kwd>
<kwd lng="en"><![CDATA[Spectrochemistry]]></kwd>
<kwd lng="en"><![CDATA[Spectral analysis]]></kwd>
<kwd lng="en"><![CDATA[France - XIX -XX centuries]]></kwd>
<kwd lng="es"><![CDATA[P.-É. Lecoq de Boisbaudran]]></kwd>
<kwd lng="es"><![CDATA[Galio]]></kwd>
<kwd lng="es"><![CDATA[Samario]]></kwd>
<kwd lng="es"><![CDATA[Disprosio y Gadolinio]]></kwd>
<kwd lng="es"><![CDATA[Espectroquímica]]></kwd>
<kwd lng="es"><![CDATA[Análisis espectral]]></kwd>
<kwd lng="es"><![CDATA[Francia - Siglos XIX-XX]]></kwd>
</kwd-group>
</article-meta>
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