Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama

Detalhes bibliográficos
Ano de defesa: 2018
Autor(a) principal: Wiethan, Bruna Avila lattes
Orientador(a): Nascimento, Paulo Cícero do lattes
Banca de defesa: Jost, Cristiane Luisa lattes, Santos, Marlei Veiga dos lattes, Rosa, Marcelo Barcellos da lattes, Ieggli, Carine Viana Silva lattes
Tipo de documento: Tese
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Santa Maria
Centro de Ciências Naturais e Exatas
Programa de Pós-Graduação: Programa de Pós-Graduação em Química
Departamento: Química
País: Brasil
Palavras-chave em Português:
Elementos terras raras
Absorção atômica
Sequencial
Simultâneo
Palavras-chave em Inglês:
Rare earth elements
Atomic absorption
Sequential
Simultaneous
Área do conhecimento CNPq:
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
Link de acesso: http://repositorio.ufsm.br/handle/1/15692
Resumo: In the present work, two methods of determination of rare earth elements by high resolution continuum source flame AAS was developed, being a sequential and a simultaneous method. The sequential method allowed the determination of an erbium, scandium, europium, holmium, ytterbium, yttrium, neodymium, samarium, terbium and thulium in natural water samples as having no pre-treatment. Limits of detection were between 0.003 μg mL-1 and 0.473 μg mL-1 for the most sensitive (Yb) and less sensitive (Tb) measurements, respectively. Accuracy was assessed through comparative analysis by inductively coupled plasma mass spectrometry. The method for simultaneous determination of Ca and Gd presented, respectively, detection limits equal to 9 μg mL -1 and 1,824 μg mL -1. This was developed for the application in magnetic resonance contrast samples based on gadolinium chelates as a tool in the determination of impurities / contaminants present in such samples. Less sensitive absorption lines of dysprosium and holmium could also be identified in the same spectral window, allowing the visualization of the signal corresponding to these four elements simultaneously.
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spelling 2019-02-20T14:29:03Z2019-02-20T14:29:03Z2018-08-29http://repositorio.ufsm.br/handle/1/15692In the present work, two methods of determination of rare earth elements by high resolution continuum source flame AAS was developed, being a sequential and a simultaneous method. The sequential method allowed the determination of an erbium, scandium, europium, holmium, ytterbium, yttrium, neodymium, samarium, terbium and thulium in natural water samples as having no pre-treatment. Limits of detection were between 0.003 μg mL-1 and 0.473 μg mL-1 for the most sensitive (Yb) and less sensitive (Tb) measurements, respectively. Accuracy was assessed through comparative analysis by inductively coupled plasma mass spectrometry. The method for simultaneous determination of Ca and Gd presented, respectively, detection limits equal to 9 μg mL -1 and 1,824 μg mL -1. This was developed for the application in magnetic resonance contrast samples based on gadolinium chelates as a tool in the determination of impurities / contaminants present in such samples. Less sensitive absorption lines of dysprosium and holmium could also be identified in the same spectral window, allowing the visualization of the signal corresponding to these four elements simultaneously.No presente trabalho foram desenvolvidos dois métodos de determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama, sendo um método sequencial e outro simultâneo. O método sequencial permitiu a determinação de érbio, escândio, európio, hólmio, itérbio, ítrio, neodímio, samário, térbio e túlio em amostras de águas naturais, as quais não precisaram de pré-tratamento. Apresentou limites de detecção entre 0,003 μg mL-1 e 0,473 μg mL-1 para as medidas mais sensível (Yb) e menos sensível (Tb), respectivamente. A exatidão foi avaliada através da análise comparativa por espectrometria de massas com plasma indutivamente acoplado. O método para determinação simultânea de Ca e Gd apresentou, respectivamente, limites de detecção iguais a 9 μg mL-1 e 1,824 μg mL-1. Foi desenvolvido visando a aplicação em amostras de contraste para ressonância magnética a base de quelatos de gadolínio, como ferramenta na determinação de impurezas/contaminantes presentes em tais amostras. Linhas de absorção bem menos sensíveis de disprósio e hólmio também puderam ser identificadas na mesma janela espectral, permitindo a visualização do sinal correspondente a estes quatro elementos simultâneamente.porUniversidade Federal de Santa MariaCentro de Ciências Naturais e ExatasPrograma de Pós-Graduação em QuímicaUFSMBrasilQuímicaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessElementos terras rarasAbsorção atômicaSequencialSimultâneoRare earth elementsAtomic absorptionSequentialSimultaneousCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICADeterminação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chamaDetermination of rare earth elements by high-resolution continuum source flame atomic absorption spectrometryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisNascimento, Paulo Cícero dohttp://lattes.cnpq.br/7151513617218161Jost, Cristiane Luisahttp://lattes.cnpq.br/2555160404004505Santos, Marlei Veiga doshttp://lattes.cnpq.br/6139003759917394Rosa, Marcelo Barcellos dahttp://lattes.cnpq.br/0308293154958870Ieggli, Carine Viana Silvahttp://lattes.cnpq.br/2004872342535591http://lattes.cnpq.br/5268769272782164Wiethan, Bruna Avila100600000000600578b51ed-b12f-4664-9b87-387ad073b32c118ed3bc-1a4d-430e-bde3-04c27d8dbcb122167883-8a8e-4439-8f69-c91c8e58e849e283300d-ef89-4534-844f-b01c55a5e64a6b7df45a-693c-426f-849a-d3d7a08bd80fbe648832-7b36-4573-ab3b-850b70b4dfd4reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGQUIMICA_2018_WIETHAN_BRUNA.pdfTES_PPGQUIMICA_2018_WIETHAN_BRUNA.pdfTese de Doutoradoapplication/pdf1669768http://repositorio.ufsm.br/bitstream/1/15692/1/TES_PPGQUIMICA_2018_WIETHAN_BRUNA.pdf1e3d31805100d4a44679c617d9cee3feMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
dc.title.alternative.eng.fl_str_mv Determination of rare earth elements by high-resolution continuum source flame atomic absorption spectrometry
title Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
spellingShingle Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
Wiethan, Bruna Avila
Elementos terras raras
Absorção atômica
Sequencial
Simultâneo
Rare earth elements
Atomic absorption
Sequential
Simultaneous
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
title_short Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
title_full Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
title_fullStr Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
title_full_unstemmed Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
title_sort Determinação de elementos terras raras por espectrometria de absorção atômica de alta resolução com fonte contínua por chama
author Wiethan, Bruna Avila
author_facet Wiethan, Bruna Avila
author_role author
dc.contributor.advisor1.fl_str_mv Nascimento, Paulo Cícero do
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/7151513617218161
dc.contributor.referee1.fl_str_mv Jost, Cristiane Luisa
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/2555160404004505
dc.contributor.referee2.fl_str_mv Santos, Marlei Veiga dos
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/6139003759917394
dc.contributor.referee3.fl_str_mv Rosa, Marcelo Barcellos da
dc.contributor.referee3Lattes.fl_str_mv http://lattes.cnpq.br/0308293154958870
dc.contributor.referee4.fl_str_mv Ieggli, Carine Viana Silva
dc.contributor.referee4Lattes.fl_str_mv http://lattes.cnpq.br/2004872342535591
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/5268769272782164
dc.contributor.author.fl_str_mv Wiethan, Bruna Avila
contributor_str_mv Nascimento, Paulo Cícero do
Jost, Cristiane Luisa
Santos, Marlei Veiga dos
Rosa, Marcelo Barcellos da
Ieggli, Carine Viana Silva
dc.subject.por.fl_str_mv Elementos terras raras
Absorção atômica
Sequencial
Simultâneo
topic Elementos terras raras
Absorção atômica
Sequencial
Simultâneo
Rare earth elements
Atomic absorption
Sequential
Simultaneous
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
dc.subject.eng.fl_str_mv Rare earth elements
Atomic absorption
Sequential
Simultaneous
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
description In the present work, two methods of determination of rare earth elements by high resolution continuum source flame AAS was developed, being a sequential and a simultaneous method. The sequential method allowed the determination of an erbium, scandium, europium, holmium, ytterbium, yttrium, neodymium, samarium, terbium and thulium in natural water samples as having no pre-treatment. Limits of detection were between 0.003 μg mL-1 and 0.473 μg mL-1 for the most sensitive (Yb) and less sensitive (Tb) measurements, respectively. Accuracy was assessed through comparative analysis by inductively coupled plasma mass spectrometry. The method for simultaneous determination of Ca and Gd presented, respectively, detection limits equal to 9 μg mL -1 and 1,824 μg mL -1. This was developed for the application in magnetic resonance contrast samples based on gadolinium chelates as a tool in the determination of impurities / contaminants present in such samples. Less sensitive absorption lines of dysprosium and holmium could also be identified in the same spectral window, allowing the visualization of the signal corresponding to these four elements simultaneously.
publishDate 2018
dc.date.issued.fl_str_mv 2018-08-29
dc.date.accessioned.fl_str_mv 2019-02-20T14:29:03Z
dc.date.available.fl_str_mv 2019-02-20T14:29:03Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufsm.br/handle/1/15692
url http://repositorio.ufsm.br/handle/1/15692
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dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
Centro de Ciências Naturais e Exatas
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Química
dc.publisher.initials.fl_str_mv UFSM
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Química
publisher.none.fl_str_mv Universidade Federal de Santa Maria
Centro de Ciências Naturais e Exatas
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações do UFSM
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