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| 341. |  | PALHANO, J. B.; CAMPO, R. J.; SFREDO, G. J.; BORKERT, C. M.; CORDEIRO, D. S. Efeito de niveis de calcario sobre o rendimento da soja. In: SEMINARIO NACIONAL DE PESQUISA DE SOJA, 2., 1981, Brasilia. Anais... Londrina: EMBRAPA-CNPSo, 1982. v.2 p.617-624. (EMBRAPA-CNPSo. Documentos, 1).| Biblioteca(s): Embrapa Soja. |
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| 352. | | LANTMANN, A. F.; PALHANO, J. B.; CAMPO, R. J.; SFREDO, G. J.; BORKERT, C. M. Efeitos da aplicacao de enxofre na producao da soja em solos do Parana. In: SEMINARIO NACIONAL DE PESQUISA DE SOJA, 3., 1984, Campinas. Anais... Londrina: EMBRAPA-CNPS, 1984. p.864-869. (EMBRAPA-CNPS. Documentos, 7).| Biblioteca(s): Embrapa Soja. |
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| 355. | | MOREIRA, A.; CASTRO, C. de; OLIVEIRA, F. A. de; SALINET, L. H.; SFREDO, G. J. Efeito residual de rochas brasileiras como fertilizantes e corretivos da acidez do solo. Espaço & Geografia, Brasília, DF. v. 9, n. 2, p. 163-177, 2006.| Biblioteca(s): Embrapa Soja. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
13/08/2007 |
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Data da última atualização: |
08/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
|
Autoria: |
CRISPINO, C. C.; FERNANDES, K. G.; KAMOGAWA, M. Y.; NÓBREGA, J. A.; NOGUEIRA, A. R. de A.; FERREIRA, M. M. C. |
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Afiliação: |
CARLA C. CRISPINO, UFSCar; KELLY G. FERNANDES, UFSCar; MARCOS Y. KAMOGAWA, USP-ESALQ; JOAQUIM A. NÓBREGA, UFSCar; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; MÁRCIA M. C. FERREIRA, Unicamp. |
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Título: |
Multivariate classification of cigarretes according to their elemetal content determined by inductively coupled plasma optical emission spectrometry. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Analytical Sciences, v. 23, n. 4, p. 435-438, apr. 2007. |
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DOI: |
10.2116/analsci.23.435 |
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Idioma: |
Inglês |
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Conteúdo: |
In this paper we describe our study on the characterization of cigarette samples according to their mineral content. Acid digestion assisted by microwaves was employed, and inductively coupled plasma optical emission spectrometry was the analytical technique used for the determination of Al, Ba, Ca, Cu, Fe, K, Mg, Mn, Na, P and Sr in conventional, light, and flavorized cigarettes. Multivariate techniques, such as hierarchical clusters analysis (HCA) and principal-component analysis (PCA), were applied to discriminate among different types of cigarettes. Cluster analysis and principalcomponent analysis showed differences in cigarettes according to the type and mineral composition. The cigarette samples were divided within the 3 groups according to their mineral composition. Ca, Sr, Cu, K and Na were the most important elements for cigarette classification, and only these 5 variables were sufficient for the classification and discrimination of the evaluated types of cigarettes. |
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Palavras-Chave: |
Cigarretes; Elemental Content; Inductively Coupled Plasma; Optical emission Spectrometry. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01808naa a2200241 a 4500
001 1032604
005 2023-03-08
008 2007 bl uuuu u00u1 u #d
024 7 $a10.2116/analsci.23.435$2DOI
100 1 $aCRISPINO, C. C.
245 $aMultivariate classification of cigarretes according to their elemetal content determined by inductively coupled plasma optical emission spectrometry.$h[electronic resource]
260 $c2007
520 $aIn this paper we describe our study on the characterization of cigarette samples according to their mineral content. Acid digestion assisted by microwaves was employed, and inductively coupled plasma optical emission spectrometry was the analytical technique used for the determination of Al, Ba, Ca, Cu, Fe, K, Mg, Mn, Na, P and Sr in conventional, light, and flavorized cigarettes. Multivariate techniques, such as hierarchical clusters analysis (HCA) and principal-component analysis (PCA), were applied to discriminate among different types of cigarettes. Cluster analysis and principalcomponent analysis showed differences in cigarettes according to the type and mineral composition. The cigarette samples were divided within the 3 groups according to their mineral composition. Ca, Sr, Cu, K and Na were the most important elements for cigarette classification, and only these 5 variables were sufficient for the classification and discrimination of the evaluated types of cigarettes.
653 $aCigarretes
653 $aElemental Content
653 $aInductively Coupled Plasma
653 $aOptical emission Spectrometry
700 1 $aFERNANDES, K. G.
700 1 $aKAMOGAWA, M. Y.
700 1 $aNÓBREGA, J. A.
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aFERREIRA, M. M. C.
773 $tAnalytical Sciences$gv. 23, n. 4, p. 435-438, apr. 2007.
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