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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 |
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.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
15/05/1997 |
Data da última atualização: |
09/09/2024 |
Autoria: |
FREITAS, V. C.; SOUZA, R. V.; RUMPF, R.; PEGORARO RUMPF, L. M.; BEM, A. R. de. |
Afiliação: |
EMBRAPA-CENARGEN. |
Título: |
Criopreservacao de ovocitos imaturos de bovinos utilizando como crioprotetores o 1.2 propanediol e glicerol. |
Ano de publicação: |
1993 |
Fonte/Imprenta: |
ARS Veterinaria, Jaboticabal, v.9, n.2, p.177, 1993. |
Páginas: |
p.177 |
Idioma: |
Português |
Palavras-Chave: |
Bovine; Bovinos; Ovocito. |
Thesagro: |
Criopreservação. |
Thesaurus NAL: |
cryopreservation; oocytes. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00675naa a2200241 a 4500 001 1171225 005 2024-09-09 008 1993 bl uuuu u00u1 u #d 100 1 $aFREITAS, V. C. 245 $aCriopreservacao de ovocitos imaturos de bovinos utilizando como crioprotetores o 1.2 propanediol e glicerol. 260 $c1993 300 $ap.177 650 $acryopreservation 650 $aoocytes 650 $aCriopreservação 653 $aBovine 653 $aBovinos 653 $aOvocito 700 1 $aSOUZA, R. V. 700 1 $aRUMPF, R. 700 1 $aPEGORARO RUMPF, L. M. 700 1 $aBEM, A. R. de 773 $tARS Veterinaria, Jaboticabal$gv.9, n.2, p.177, 1993.
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