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dc.contributor.author
Llaver, Mauricio

dc.contributor.author
Lucena, Rafael
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Cardenas, Soledad
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Wuilloud, Rodolfo German

dc.date.available
2025-02-24T12:58:14Z
dc.date.issued
2019
dc.identifier.citation
A novel Fe3O4-polymeric ionic liquid magnetic nanocomposite for O.Hy.1 efficient preconcentration and speciation analysis of inorganic tellurium in environmental samples by flow injection-hydride generation atomic fluorescence spectrometry; Colloquium Spectroscopicum Internationale XLI (CSIXLI) and First Latin - American Meeting on Laser Induced breakdown Spectroscopy (LAMLIBS); Ciudad de México; México; 2019; 1-1
dc.identifier.uri
http://hdl.handle.net/11336/255075
dc.description.abstract
A novel magnetic polymeric ionic liquid (PIL) nanocomposite was synthetized and successfully applied for the preconcentration and speciation analysis of Te in different environmental samples. The nanocomposite was prepared by an approach based on the Radziszewski reaction, which is a simple and straightforward procedure to obtain imidazolium-type PILs under mild conditions, in the presence of aminofunctionalized magnetic Fe3O4 nanoparticles.1 A complete characterization of the nanocomposite by different techniques such as: infrared spectroscopy, zeta potential and X-ray diffraction, among others, was performed. The synthesized PIL material was applied for the preconcentration and speciation analysis of Te -an element with increasing applications in several fields-2 in waters, soils and sediments. pH was found to be a crucial parameter for the selective extraction of Te(IV) and Te(VI) species, being Te(IV) selectively extracted at pH values below 1.5. The effect of other parameters such as the type and concentration of complexing agents, sample volume, mass of extractant, extraction and phase separation time and type of eluent were also carefully studied, with the aim of maximizing the efficiency and selectivity of the method. A 100% retention efficiency was obtained under optimized conditions, even with sample volumes as high as 25 mL. Additionally, variables related to the determination of Te by hydride generation atomic fluorescence spectrometry (HG-AFS) were studied. To maximize the sensitivity of the measurements, an external flow-injection hydride generation system was adapted to the AF spectrometer. This resulted in a low volume hydride generation system that allowed the efficient generation of the Te hydride from a reduced extract volume (400 µL), yielding an excellent sensitivity and a limit of detection of 1.9 ng L-1 for Te(IV) and of 3.7 ng L-1 for Te(VI). Finally, the optimized procedure was successfully applied for the determination of Te(IV) and Te(VI) in water, soil and sediment samples, with recovery values ranging from 95.4% to 105% for Te(IV) and from 90.0% to 107% for Te(VI).
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application/pdf
dc.language.iso
eng
dc.publisher
National Autonomous University of Mexico
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Polymeric Ionic Liquid
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Magnetic
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Nanocomposite
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Tellurium
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Atomic Spectrometry
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Química Analítica

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Ciencias Químicas

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CIENCIAS NATURALES Y EXACTAS

dc.title
A novel Fe3O4-polymeric ionic liquid magnetic nanocomposite for O.Hy.1 efficient preconcentration and speciation analysis of inorganic tellurium in environmental samples by flow injection-hydride generation atomic fluorescence spectrometry
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2022-12-05T16:57:38Z
dc.journal.pagination
1-1
dc.journal.pais
México

dc.journal.ciudad
Ciudad de México
dc.description.fil
Fil: Llaver, Mauricio. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Química Analítica para Investigación y Desarrollo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
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Fil: Lucena, Rafael. Universidad de Córdoba. Instituto Universitario de Investigación en Química Fina y Nanoquímica; España
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Fil: Cardenas, Soledad. Universidad de Córdoba. Instituto Universitario de Investigación en Química Fina y Nanoquímica; España
dc.description.fil
Fil: Wuilloud, Rodolfo German. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Química Analítica para Investigación y Desarrollo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.degruyter.com/document/doi/10.1515/ci-2020-0127/html
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info:eu-repo/semantics/altIdentifier/url/https://iupac.org/event/colloquium-spectroscopicum-internationale-xli/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1515/ci-2020-0127
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Autor

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Autor

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Autor

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Autor

dc.coverage
Internacional
dc.type.subtype
Congreso
dc.description.nombreEvento
Colloquium Spectroscopicum Internationale XLI (CSIXLI) and First Latin - American Meeting on Laser Induced breakdown Spectroscopy (LAMLIBS)
dc.date.evento
2019-06-09
dc.description.ciudadEvento
Ciudad de México
dc.description.paisEvento
México

dc.type.publicacion
Book
dc.description.institucionOrganizadora
National Autonomous University of Mexico
dc.source.libro
Colloquium Spectroscopicum Internationale XLI (CSIXLI) and First Latin; American Meeting on Laser Induced breakdown Spectroscopy (LAMLIBS)
dc.date.eventoHasta
2019-06-14
dc.type
Congreso
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