Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry

Detalhes bibliográficos
Autor(a) principal: Araujo, Rennan Geovanny Oliveira
Data de Publicação: 2005
Outros Autores: Dias, Fábio de Souza, Macedo, Samuel Marques, Santos, Walter Nei Lopes dos, Ferreira, Sergio Luis Costa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/12369
Resumo: Texto completo: acesso restrito. p.397–400
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spelling Araujo, Rennan Geovanny OliveiraDias, Fábio de SouzaMacedo, Samuel MarquesSantos, Walter Nei Lopes dosFerreira, Sergio Luis CostaAraujo, Rennan Geovanny OliveiraDias, Fábio de SouzaMacedo, Samuel MarquesSantos, Walter Nei Lopes dosFerreira, Sergio Luis Costa2013-07-31T13:24:22Z20050308-8146http://www.repositorio.ufba.br/ri/handle/ri/12369v.101 n. 1Texto completo: acesso restrito. p.397–400The wheat is one of the cereals more consumed in the human food in all worlds. In the form of flour it is used for preparation of breads, cookies, pizzas, cakes, and etc. This way, the knowledge of the mineral content this cereal and its flour is very important. Considering it, methods for determination of metals in these matrices are opportune and several papers have been performed. In this paper, a slurry sampling flame atomic absorption spectrometric method for the determination of manganese in wheat flour is proposed. The optimization step was performed using univariate methodology involving the variables: nature and concentration of the acid solution for slurry preparation, sonication time and sample mass. The established experimental conditions after optimization recommend a sample mass of 0.5 g, 2.0 mol L−1nitric acid solution and a sonication time of 15 min. This method allows the determination of manganese in wheat flour using the standard calibration technique, with a detection limit of 0.13 μg g−1, and a precision, expressed as relative standard deviation (RSD) of 3.5% (n = 10) for a manganese content of about 7.6 μg g−1 and using a wheat flour mass of 0.5 g. The accuracy was confirmed by analyzing of three certified reference materials of rice flours. The proposed method was applied for the determination of manganese in seven samples of wheat flour acquired in supermarkets from Salvador City, Brazil. In these, the manganese content varied of 5.2 and 7.6 μg g−1. The results showed no significant differences with those obtained after complete digestion of these samples and manganese determination also using FAAS.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-07-31T13:24:22Z No. of bitstreams: 1 1-s2.0-S0308814605009271-main.pdf: 108354 bytes, checksum: 788debedce8b236bf2a201f12171f5c4 (MD5)Made available in DSpace on 2013-07-31T13:24:22Z (GMT). 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dc.title.pt_BR.fl_str_mv Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
dc.title.alternative.pt_BR.fl_str_mv Food Chemistry
title Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
spellingShingle Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
Araujo, Rennan Geovanny Oliveira
Slurry sampling
Wheat flour
Manganese determination
FAAS
title_short Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
title_full Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
title_fullStr Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
title_full_unstemmed Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
title_sort Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
author Araujo, Rennan Geovanny Oliveira
author_facet Araujo, Rennan Geovanny Oliveira
Dias, Fábio de Souza
Macedo, Samuel Marques
Santos, Walter Nei Lopes dos
Ferreira, Sergio Luis Costa
author_role author
author2 Dias, Fábio de Souza
Macedo, Samuel Marques
Santos, Walter Nei Lopes dos
Ferreira, Sergio Luis Costa
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Araujo, Rennan Geovanny Oliveira
Dias, Fábio de Souza
Macedo, Samuel Marques
Santos, Walter Nei Lopes dos
Ferreira, Sergio Luis Costa
Araujo, Rennan Geovanny Oliveira
Dias, Fábio de Souza
Macedo, Samuel Marques
Santos, Walter Nei Lopes dos
Ferreira, Sergio Luis Costa
dc.subject.por.fl_str_mv Slurry sampling
Wheat flour
Manganese determination
FAAS
topic Slurry sampling
Wheat flour
Manganese determination
FAAS
description Texto completo: acesso restrito. p.397–400
publishDate 2005
dc.date.issued.fl_str_mv 2005
dc.date.accessioned.fl_str_mv 2013-07-31T13:24:22Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/12369
dc.identifier.issn.none.fl_str_mv 0308-8146
dc.identifier.number.pt_BR.fl_str_mv v.101 n. 1
identifier_str_mv 0308-8146
v.101 n. 1
url http://www.repositorio.ufba.br/ri/handle/ri/12369
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.foodchem.2005.10.024
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