|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
03/12/2020 |
Data da última atualização: |
03/12/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MOREIRA, L. S.; SÁ, I. P.; MACHADO, R. C.; NOGUEIRA, A. R. de A.; SILVA, E. G. P. da; AMARAL, C. D. B. |
Afiliação: |
Luana S. Moreira, UFPR; Ívero P. Sá, UFSCAR; Raquel Cardoso Machado, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; Erik G. P. da Silva, UNIVERSIDADE DO ESTADO SANTA CRUZ; Clarice D. B. Amaral, UFPR. |
Título: |
Coprecipitation magnesium(II) hydroxide as a strategy of pre-concentration for trace elemental determination by microwave-induced plasma optical emission spectrometry. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Spectrochimica Acta Part B, v. 169, 105899, jul. 2020. |
DOI: |
https://doi.org/10.1016/j.sab.2020.105899 |
Idioma: |
Inglês |
Conteúdo: |
In this work, a method employing coprecipitation procedure with magnesium hydroxide as a carrier for separation/preconcentration of arsenic(V), cadmium(II), chromium(III), cobalt(II), copper(II), manganese(VII), mercury(II), nickel(II), and vanadium(V) was developed. The method was applied in fish and shellfish samples, and the elements were determined by microwave-induced plasma optical emission spectrometry (MIP OES). Complete two-level factorial design for four variables and a mixture design were employed to evaluate and optimize the factors involved in this system. Under optimized conditions, the accuracy of the procedure was assessed using certified reference material, obtaining recoveries of 92 to 105% for the elements studied. The proposed method presented the detection limits in the range of 0.01?0.33 ?g g?1, and enrichment factors of 5; 17; 6; 25; 24; 25; 25; 25; and 13 for the analytes As5+, Cd2+, Cr3+, Co2+, Cu2+, Mn7+, Hg2+, Ni2+, and V5+, respectively. The applied chemometric tools were effective to optimize the important variables involved in the developed coprecipitation route. The proposed method presented simplicity, low cost, high sensitivity, allowing the determination of the analytes by MIP OES. |
Palavras-Chave: |
Fish samples; Mg(OH)2; MIP OES; Multivariate optimization; Nitrogen plasma; Sample preparation. |
Categoria do assunto: |
W Química e Física |
Marc: |
LEADER 02116naa a2200265 a 4500 001 2127532 005 2020-12-03 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.sab.2020.105899$2DOI 100 1 $aMOREIRA, L. S. 245 $aCoprecipitation magnesium(II) hydroxide as a strategy of pre-concentration for trace elemental determination by microwave-induced plasma optical emission spectrometry.$h[electronic resource] 260 $c2020 520 $aIn this work, a method employing coprecipitation procedure with magnesium hydroxide as a carrier for separation/preconcentration of arsenic(V), cadmium(II), chromium(III), cobalt(II), copper(II), manganese(VII), mercury(II), nickel(II), and vanadium(V) was developed. The method was applied in fish and shellfish samples, and the elements were determined by microwave-induced plasma optical emission spectrometry (MIP OES). Complete two-level factorial design for four variables and a mixture design were employed to evaluate and optimize the factors involved in this system. Under optimized conditions, the accuracy of the procedure was assessed using certified reference material, obtaining recoveries of 92 to 105% for the elements studied. The proposed method presented the detection limits in the range of 0.01?0.33 ?g g?1, and enrichment factors of 5; 17; 6; 25; 24; 25; 25; 25; and 13 for the analytes As5+, Cd2+, Cr3+, Co2+, Cu2+, Mn7+, Hg2+, Ni2+, and V5+, respectively. The applied chemometric tools were effective to optimize the important variables involved in the developed coprecipitation route. The proposed method presented simplicity, low cost, high sensitivity, allowing the determination of the analytes by MIP OES. 653 $aFish samples 653 $aMg(OH)2 653 $aMIP OES 653 $aMultivariate optimization 653 $aNitrogen plasma 653 $aSample preparation 700 1 $aSÁ, I. P. 700 1 $aMACHADO, R. C. 700 1 $aNOGUEIRA, A. R. de A. 700 1 $aSILVA, E. G. P. da 700 1 $aAMARAL, C. D. B. 773 $tSpectrochimica Acta Part B$gv. 169, 105899, jul. 2020.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 43 | |
41. | | BARRETO, P. A. B.; GAMA-RODRIGUES, E. F.; GAMA-RODRIGUES, A. C.; FONTES, A. G.; POLIDORO, J. C.; MOÇO, M. K. S.; MACHADO, R. C. R.; BALIGAR, V. C. Distribution of oxidizable organic C fractions in soils under cacao agroforestry systems in Southern Bahia, Brazil. Agroforestry Systems, v. 81, n. 3, p. 213-220, Mar. 2011.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Solos. |
| |
42. | | ARAÚJO, I. S.; SOUZA FILHO, G. A. de; PEREIRA, M. G.; FALEIRO, F. G.; QUEIROZ, V. T. de; GUIMARAES, C. T.; MOREIRA, M. A.; BARROS, E. G. de; MACHADO, R. C. R.; PIRES, J. L.; SCHENELL, R.; LOPES, U. V. Mapping of quantitative trait loci for butter content and hardness in cocoa beans (Theobroma cacao L.) Plant Molecular Biology Reporter, v. 27, n. 2, jun. 2009. p. 177-183Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Cerrados. |
| |
43. | | ROSA, L. K.; COSTA, F. S.; HAUAGGE, C. M.; MOBILE, R. Z.; LIMA, A. A. S. de; AMARAL, C. D. B. do; MACHADO, R. C.; NOGUEIRA, A. R. de A.; BRANCHER, J. A.; ARAUJO, M. R. DE. Oral health, organic and inorganic saliva composition of men with Schizophrenia: case-control study. Journal of Trace Elements in Medicine and Biology, v.66, jul. 2021, 126743. 8 p.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
Registros recuperados : 43 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|