DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY

Detalhes bibliográficos
Autor(a) principal: Rodrigues, Laécio Carneiro
Data de Publicação: 2008
Outros Autores: Santana, Marcos Antonio Eduardo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência Florestal (Online)
Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/462
Resumo: The objective of this work was to compare the performance of two analytical techniques, flame atomic absorption spectroscopy (FAAS) and ultraviolet-visible spectroscopy (UV-VIS), in the determination of the silica content in lignocellulosic materials. The methods were tested in wood specimens of three trees of Apuleia leiocarpa (Vog.) Macbride. The results showed that both techniques present good performance, but the FAAS presents better precision, speed and operational simplicity. However, the application of the UV-VIS spectroscopy is justified by the fact of the acquisition and maintenance costs of an UV-VIS spectrophotometer are lower when compared to those of a spectrometer of atomic absorption. The use of the FAAS technique should just be chosen when the silica content is expected to be very low, once the UV-VIS spectroscopy, in those cases, does not present good precision.
id UFSM-6_5b1544fff61117b46d8c6a27ea37a0f6
oai_identifier_str oai:ojs.pkp.sfu.ca:article/462
network_acronym_str UFSM-6
network_name_str Ciência Florestal (Online)
repository_id_str
spelling DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPYDeterminação do teor de sílica em madeira por espectroscopia de absorção atômica de chama versus espectroscopia no ultravioleta-visível.tropical woodssiliconsilicates and inorganic materialsmadeiras tropicaismateriais inorgânicossilicatos e silício.The objective of this work was to compare the performance of two analytical techniques, flame atomic absorption spectroscopy (FAAS) and ultraviolet-visible spectroscopy (UV-VIS), in the determination of the silica content in lignocellulosic materials. The methods were tested in wood specimens of three trees of Apuleia leiocarpa (Vog.) Macbride. The results showed that both techniques present good performance, but the FAAS presents better precision, speed and operational simplicity. However, the application of the UV-VIS spectroscopy is justified by the fact of the acquisition and maintenance costs of an UV-VIS spectrophotometer are lower when compared to those of a spectrometer of atomic absorption. The use of the FAAS technique should just be chosen when the silica content is expected to be very low, once the UV-VIS spectroscopy, in those cases, does not present good precision. O presente trabalho teve como objetivo comparar o desempenho de duas técnicas analíticas, espectroscopia de absorção atômica de chama (FAAS) e espectroscopia no ultravioleta-visível (UV-VIS), na determinação do teor de sílica em materiais lignocelulósicos. Os métodos foram testados em amostras de madeira de três árvores de Apuleia leiocarpa (Vog.) Macbride. Os resultados mostraram que ambas as técnicas apresentam bons resultados, no entanto, a FAAS apresenta melhor precisão, rapidez e simplicidade operacional. Entretanto, a aplicação da espectroscopia UV-VIS é justificada pelo fato de os custos de aquisição e manutenção de um espectrofotômetro UV-VIS serem muito inferiores àqueles de um espectrômetro de absorção atômica. O uso da técnica FAAS deve ser preferido apenas quando os teores de sílica a serem determinados forem muito baixos, tendo em vista que a espectroscopia UV-VIS, nesses casos, não apresenta boa precisão.Universidade Federal de Santa Maria2008-06-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/46210.5902/19805098462Ciência Florestal; Vol. 18 No. 2 (2008); 259-264Ciência Florestal; v. 18 n. 2 (2008); 259-2641980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/462/359Rodrigues, Laécio CarneiroSantana, Marcos Antonio Eduardoinfo:eu-repo/semantics/openAccess2017-05-11T13:35:06Zoai:ojs.pkp.sfu.ca:article/462Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-05-11T13:35:06Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
Determinação do teor de sílica em madeira por espectroscopia de absorção atômica de chama versus espectroscopia no ultravioleta-visível.
title DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
spellingShingle DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
Rodrigues, Laécio Carneiro
tropical woods
silicon
silicates and inorganic materials
madeiras tropicais
materiais inorgânicos
silicatos e silício.
title_short DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
title_full DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
title_fullStr DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
title_full_unstemmed DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
title_sort DETERMINATION OF SILICA CONTENT IN WOOD BY FLAME ATOMIC ABSORPTION SPECTROSCOPY VERSUS ULTRAVIOLET-VISIBLE SPECTROSCOPY
author Rodrigues, Laécio Carneiro
author_facet Rodrigues, Laécio Carneiro
Santana, Marcos Antonio Eduardo
author_role author
author2 Santana, Marcos Antonio Eduardo
author2_role author
dc.contributor.author.fl_str_mv Rodrigues, Laécio Carneiro
Santana, Marcos Antonio Eduardo
dc.subject.por.fl_str_mv tropical woods
silicon
silicates and inorganic materials
madeiras tropicais
materiais inorgânicos
silicatos e silício.
topic tropical woods
silicon
silicates and inorganic materials
madeiras tropicais
materiais inorgânicos
silicatos e silício.
description The objective of this work was to compare the performance of two analytical techniques, flame atomic absorption spectroscopy (FAAS) and ultraviolet-visible spectroscopy (UV-VIS), in the determination of the silica content in lignocellulosic materials. The methods were tested in wood specimens of three trees of Apuleia leiocarpa (Vog.) Macbride. The results showed that both techniques present good performance, but the FAAS presents better precision, speed and operational simplicity. However, the application of the UV-VIS spectroscopy is justified by the fact of the acquisition and maintenance costs of an UV-VIS spectrophotometer are lower when compared to those of a spectrometer of atomic absorption. The use of the FAAS technique should just be chosen when the silica content is expected to be very low, once the UV-VIS spectroscopy, in those cases, does not present good precision.
publishDate 2008
dc.date.none.fl_str_mv 2008-06-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/462
10.5902/19805098462
url https://periodicos.ufsm.br/cienciaflorestal/article/view/462
identifier_str_mv 10.5902/19805098462
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/462/359
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Florestal; Vol. 18 No. 2 (2008); 259-264
Ciência Florestal; v. 18 n. 2 (2008); 259-264
1980-5098
0103-9954
reponame:Ciência Florestal (Online)
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Florestal (Online)
collection Ciência Florestal (Online)
repository.name.fl_str_mv Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv ||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br
_version_ 1799944125443735552

Registros relacionados