Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
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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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). No. of bitstreams: 1 1-s2.0-S0308814605009271-main.pdf: 108354 bytes, checksum: 788debedce8b236bf2a201f12171f5c4 (MD5) Previous issue date: 2006http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.foodchem.2005.10.024reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBASlurry samplingWheat flourManganese determinationFAASMethod development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometryFood Chemistryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINAL1-s2.0-S0308814605009271-main.pdf1-s2.0-S0308814605009271-main.pdfapplication/pdf108354https://repositorio.ufba.br/bitstream/ri/12369/1/1-s2.0-S0308814605009271-main.pdf788debedce8b236bf2a201f12171f5c4MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/12369/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT1-s2.0-S0308814605009271-main.pdf.txt1-s2.0-S0308814605009271-main.pdf.txtExtracted texttext/plain19951https://repositorio.ufba.br/bitstream/ri/12369/3/1-s2.0-S0308814605009271-main.pdf.txt6696b2d5868457a3e41e330b69a22946MD53ri/123692022-10-07 16:55:50.908oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-10-07T19:55:50Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
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 |
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article |
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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 |
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eng |
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eng |
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http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.foodchem.2005.10.024 |
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