| |
|
|
| Registros recuperados : 43 | |
| 22. |  | GONZALEZ, M. H.; SOUZA, G. B.; OLIVEIRA, R. V.; FORATO, L. A.; NOBREGA, J. A.; NOGUEIRA, A. R. A. Microwave-assisted digestion procedures for biological samples with diluted nitric acid: identification of reaction products. Talanta, London, v. 79, p. 396-401, 2009.| Biblioteca(s): Embrapa Instrumentação. |
|   |
| 23. | | GONZALEZ, M. H.; SILVA, F. V.; CARRILHO, E. N. V. M.; NOBREGA, J. A.; NOGUEIRA, A. R. de A. Moagem criogênica de amostras de tecido vegetal: composição química versus tamanho de partícula. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 11., 2001, Campinas, SP. Desafios da química analítica no século XXI. Anais... Campinas: ENQA, 2001. TA-3.| Biblioteca(s): Embrapa Pecuária Sudeste. |
|  |
| 24. | | MATOS, W. O.; MENEZES, E. A.; GONZALEZ, M. H.; COSTA, L. M.; TREVIZAN, L. C.; NOGUEIRA, A. R. de A. Partial microwave-assisted wet digestion of animal tissue using a baby-bottle sterilizer for analyte determination by inductively coupled plasma optical emission spectrometry. Spectrochimica Acta Part B: Atomic Spectroscopy, v. 64, n. 6, p. 615-618, june 2009.| Biblioteca(s): Embrapa Pecuária Sudeste. |
|  |
| 25. | | GONZALEZ, M. H.; OLIVEIRA, R. V.; PEREIRA FILHO, E. R.; NÓBREGA, J. A.; NOGUEIRA, A. R. de A. Otimização da separação de isômeros de ácidos nitrobenzóicos resultantes da digestão ácida de materiais biológicos. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 14., 2007, João Pessoa, PB. Anais... João Pessoa: SBQA, 2007. 1 CD-ROM.| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 28. | | GONZALEZ, M. H.; OLIVEIRA, R. V.; FORATO, L. A.; NÓBREGA, J. A.; NOGUEIRA, A. R. de A. Caracterização dos produtos reacionais resultantes da digestão ácida de materiais biológicos assistida por radiação microondas. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 14., 2007, João Pessoa, PB. Anais... João Pessoa: SBQA, 2007. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação; Embrapa Pecuária Sudeste. |
|  |
| 30. | | GONZALEZ, M. H.; ARAÚJO, G. C. L.; PELIZARO, C. B.; MENEZES, E. A.; LEMOS, S. G.; SOUZA, G. B. de; NOGUEIRA, A. R. de A. Coconut coir as bioserbent for Cr(VI) removal from laboratory wastewater. Journal of Hazardous Materials, v. 159, n. 2-3, p. 252-256, nov. 2008.| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 31. | | GONZALEZ, M. H.; MARTINS, E. N. V. C.; LOPES, G. S.; SOUZA, G. B. de; PICCHI, C. M. C.; NOGUEIRA, A. R. de A. Análise de alimentos para bovinos - uma visão geral. In: SEMANA DE QUÍMICA DO INSTITUTO DE QUÍMICA DA UNICAMP, 1., 2001, Campinas, SP. Campinas: SBQ, 2001.| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 32. | | GONZALEZ, M. H.; SOUZA, G. B. D.; OLIVEIRA, R. V. DE; FORATO, L. A.; NÓBREGA, J. A.; NOGUEIRA, A. R. de A. Microwave-assisted digestion procedures for biological samples with diluted nitric acid: identification of reaction products. Talanta, v. 79, n. 2, p. 396-401, jul. 2009.| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 33. | | MENEZES, E. A.; CHAVES, F. S.; GONZALEZ, M. H.; MATOS, W. O.; SOUZA, G. B. de; NÓBREGA, J. A.; NOGUEIRA, A. R. de A. Microwave radiation strategies analytical chemistry: an alternative for minimization of chemical wastes and analytical throughput. In: INTERNATIONAL SYMPOSIUM ON RESIDUE MANAGEMENT IN UNIVERSITIES, 3.; ENCONTRO NACIONAL DE SEGURANÇA EM QUÍMICA, 4., 2006, São Carlos: USP, 2006. 3 f. 1 CD-ROM| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 34. | | MOREIRA, L. S; COSTA, F. S; MACHADO, R. C.; NOGUEIRA, A. R. de A.; GONZALEZ, M. H.; SILVA, E. G. P. da; AMARAL, C. D. B. do. Self-organizing map applied to the choice of internal standards for the determination of Cd, Pb, Sn, and platinum group elements by inductively coupled plasma mass spectrometry. Talanta, v. 233, oct. 2021, 122534. 6 p.| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 35. | | SANTANA, A. P. R.; ANDRADE, D. F.; GUIMARÃES, T. G. S.; AMARAL, C. D. B.; OLIVEIRA, A.; NOGUEIRA, A. R. de A.; GONZALEZ, M. H. Solventes eutéticos naturais profundos (NADES) no preparo de amostras de rocha fosfática e suplemento mineral para determinação elementar por técnicas de plasma. Química Nova, v.44, n.6, p.689-695, 2021.| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 37. | | SILVA, P. H. T.; GONZALEZ, M. H.; SOUSA, M. R.; GROMBINI, C. F.; SOUZA, G. B. de; NOGUEIRA, A. R. de A. Gerenciamento e tratamento de resíduos químicos dos laboratórios da Embrapa Pecuária Sudeste. In: ENCONTRO NACIONAL SOBRE METODOLOGIAS DE LABORATÓRIOS 11., 2006, Concórdia, SC. Anais... Concórdia: Embrapa Suínos e Aves, 2006. p. 37| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 38. | | SILVA, P. H. T.; GONZALEZ, M. H.; SOUSA, M. R. de; GROMBONI, C. F.; SOUZA, G. B. de; NOGUEIRA, A. R. de A. Gerenciamento e tratamento de resíduos químicos dos laboratórios da Embrapa Pecuária Sudeste. In: ENCONTRO NACIONAL SOBRE METODOLOGIAS DE LABORATÓRIO, 11., 2006, Concórdia. Anais... Concórdia: Embrapa Suínos e Aves, 2006. p.38. 77 p. (Embrapa Suínos e Aves. Documentos, 112).| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 39. | | TONIOLO-SILVA, P. H. T.; GONZALEZ, M. H.; SOUSA, M. R. de; SOUZA, G. B. de; NOGUEIRA, A. R. de A. Gerenciamento e tratamento de resíduos químicos dos laboratórios da Embrapa Pecuária Sudeste. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUDESTE, 2006, São Carlos, SP. Anais... São Carlos: Embrapa Pecuária Sudeste, 2006. (Documentos / Embrapa Pecuária Sudeste, 62).| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| 40. | | SOUZA, G. B. de; MENEZES, E. A.; GONZALEZ, M. H.; CARPELLI, R.; CHAVES, F. S.; MATOS, W. O.; NOGUEIRA, A. R. de A. Pressurized system and microwave-assisted extraction for rapid analysis of fiber in animal feedstuffs. Analytical Letters, v. 41, n.9. p. 1633-1639, 2008.| Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
| Registros recuperados : 43 | |
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
|
Data corrente: |
26/06/2009 |
|
Data da última atualização: |
15/03/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
GONZALEZ, M. H.; SOUZA, G. B. D.; OLIVEIRA, R. V. DE; FORATO, L. A.; NÓBREGA, J. A.; NOGUEIRA, A. R. de A. |
|
Afiliação: |
MÁRIO HENRIQUE GONZALEZ, UFSCAR; GILBERTO BATISTA DE SOUZA, CPPSE; REGINA V. DE OLIVEIRA, UFSCAR; LUCIMARA A. FORATO, UFSCAR; JOAQUIM A. NÓBREGA, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
|
Título: |
Microwave-assisted digestion procedures for biological samples with diluted nitric acid: identification of reaction products. |
|
Ano de publicação: |
2009 |
|
Fonte/Imprenta: |
Talanta, v. 79, n. 2, p. 396-401, jul. 2009. |
|
DOI: |
10.1016/j.talanta.2009.04.001 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Microwave-assisted sample preparation using diluted nitric acid solutions is an alternative procedure for digesting organic samples. The efficiency of this procedure depends on the chemical properties of the samples and in this work it was evaluated by the determination of crude protein amount, fat and original carbon. Soybeans grains, bovine blood, bovine muscle and bovine viscera were digested in a cavity-microwave oven using oxidant mixtures in different acid concentrations. The digestion efficiency was evaluated based on the determination of residual carbon content and element recoveries using inductively coupled plasma optical emission spectrometry (ICP OES). In order to determine the main residual organic compounds, the digests were characterized by nuclear magnetic resonance ((1)H NMR). Subsequently, studies concerning separation of nitrobenzoic acid isomers were performed by ion pair reversed phase liquid chromatography using a C18 stationary phase, water:acetonitrile:methanol (75:20:5, v/v/v)+0.05% (v/v) TFA as mobile phase and ultraviolet detection at 254 nm. Sample preparation based on diluted acids proved to be feasible and a recommendable alternative for organic sample digestion, reducing both the reagent volumes and the variability of the residues as a result of the process of decomposition. It was shown that biological matrices containing amino acids, proteins and lipids in their composition produced nitrobenzoic acid isomers and other organic compounds after cleavage of chemical bonds. MenosMicrowave-assisted sample preparation using diluted nitric acid solutions is an alternative procedure for digesting organic samples. The efficiency of this procedure depends on the chemical properties of the samples and in this work it was evaluated by the determination of crude protein amount, fat and original carbon. Soybeans grains, bovine blood, bovine muscle and bovine viscera were digested in a cavity-microwave oven using oxidant mixtures in different acid concentrations. The digestion efficiency was evaluated based on the determination of residual carbon content and element recoveries using inductively coupled plasma optical emission spectrometry (ICP OES). In order to determine the main residual organic compounds, the digests were characterized by nuclear magnetic resonance ((1)H NMR). Subsequently, studies concerning separation of nitrobenzoic acid isomers were performed by ion pair reversed phase liquid chromatography using a C18 stationary phase, water:acetonitrile:methanol (75:20:5, v/v/v)+0.05% (v/v) TFA as mobile phase and ultraviolet detection at 254 nm. Sample preparation based on diluted acids proved to be feasible and a recommendable alternative for organic sample digestion, reducing both the reagent volumes and the variability of the residues as a result of the process of decomposition. It was shown that biological matrices containing amino acids, proteins and lipids in their composition produced nitrobenzoic acid isomers and other organic compounds after ... Mostrar Tudo |
|
Palavras-Chave: |
Biological samples; Diluted nitric acid; Nitrobenzoic acid isomers; Sample preparation. |
|
Thesaurus NAL: |
high performance liquid chromatography. |
|
Categoria do assunto: |
W Química e Física |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38657/1/PROCI-2009.00018.pdf
|
|
Marc: |
LEADER 02365naa a2200253 a 4500
001 1082784
005 2023-03-15
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1016/j.talanta.2009.04.001$2DOI
100 1 $aGONZALEZ, M. H.
245 $aMicrowave-assisted digestion procedures for biological samples with diluted nitric acid$bidentification of reaction products.$h[electronic resource]
260 $c2009
520 $aMicrowave-assisted sample preparation using diluted nitric acid solutions is an alternative procedure for digesting organic samples. The efficiency of this procedure depends on the chemical properties of the samples and in this work it was evaluated by the determination of crude protein amount, fat and original carbon. Soybeans grains, bovine blood, bovine muscle and bovine viscera were digested in a cavity-microwave oven using oxidant mixtures in different acid concentrations. The digestion efficiency was evaluated based on the determination of residual carbon content and element recoveries using inductively coupled plasma optical emission spectrometry (ICP OES). In order to determine the main residual organic compounds, the digests were characterized by nuclear magnetic resonance ((1)H NMR). Subsequently, studies concerning separation of nitrobenzoic acid isomers were performed by ion pair reversed phase liquid chromatography using a C18 stationary phase, water:acetonitrile:methanol (75:20:5, v/v/v)+0.05% (v/v) TFA as mobile phase and ultraviolet detection at 254 nm. Sample preparation based on diluted acids proved to be feasible and a recommendable alternative for organic sample digestion, reducing both the reagent volumes and the variability of the residues as a result of the process of decomposition. It was shown that biological matrices containing amino acids, proteins and lipids in their composition produced nitrobenzoic acid isomers and other organic compounds after cleavage of chemical bonds.
650 $ahigh performance liquid chromatography
653 $aBiological samples
653 $aDiluted nitric acid
653 $aNitrobenzoic acid isomers
653 $aSample preparation
700 1 $aSOUZA, G. B. D.
700 1 $aOLIVEIRA, R. V. DE
700 1 $aFORATO, L. A.
700 1 $aNÓBREGA, J. A.
700 1 $aNOGUEIRA, A. R. de A.
773 $tTalanta$gv. 79, n. 2, p. 396-401, jul. 2009.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
