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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
16/02/2005 |
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Data da última atualização: |
06/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NASCENTES, C. C.; ARRUDA, M. A. Z.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. |
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Afiliação: |
CLÉSIA C. NASCENTES, UFSCar, SÃO CARLOS, SP.; MARCO A. Z. ARRUDA, Universidade Estadual de Campinas, Campinas, SP.; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOAQUIM A. NÓBREGA, UFSCar, SÃO CARLOS, SP. |
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Título: |
Direct determination of Cu and Zn in fruit juices and bovine milk by thermospray flame furnace atomic absorption spectrometry. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Talanta, v.64, n.4, p.912-917, nov. 2004. |
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DOI: |
https://doi.org/10.1016/j.talanta.2004.04.004 |
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Idioma: |
Inglês |
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Conteúdo: |
In the present work, thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) was employed for Cu and Zn determination in bovine milk and fruit juice samples without any pretreatment. TS-FF-AAS system was optimized and a sample volume of 300 ?l was injected into the carrier stream (0.014 mol l?1 HNO3 at a flow rate of 0.4 ml min?1), and it was introduced into a hot Ni tube. The detection limits obtained for Cu and Zn in aqueous solution were 2.2 and 0.91 ?g l?1, respectively, and 3.2 ?g l?1 for Cu in a medium containing water-soluble tertiary amines. The relative standard deviations varied from 2.7 to 4.2% (n=12). Sample preparation was carried out by simple dilution in water or in water-soluble tertiary amines medium. Accuracy was checked by performing addition-recovery experiments as well as by using reference materials (whole milk powder, non-fat milk powder, and infant formula). Recoveries varied from 97.7 to 105.3% for Cu and Zn. All results obtained for reference materials were in agreement with certified values at a 95% confidence level. |
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Palavras-Chave: |
Cu; FAAS; Flame furnace; Thermospray; Zn. |
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Thesaurus Nal: |
Fruit juices; Milk. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01826naa a2200253 a 4500
001 1046992
005 2022-05-06
008 2004 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.talanta.2004.04.004$2DOI
100 1 $aNASCENTES, C. C.
245 $aDirect determination of Cu and Zn in fruit juices and bovine milk by thermospray flame furnace atomic absorption spectrometry.$h[electronic resource]
260 $c2004
520 $aIn the present work, thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) was employed for Cu and Zn determination in bovine milk and fruit juice samples without any pretreatment. TS-FF-AAS system was optimized and a sample volume of 300 ?l was injected into the carrier stream (0.014 mol l?1 HNO3 at a flow rate of 0.4 ml min?1), and it was introduced into a hot Ni tube. The detection limits obtained for Cu and Zn in aqueous solution were 2.2 and 0.91 ?g l?1, respectively, and 3.2 ?g l?1 for Cu in a medium containing water-soluble tertiary amines. The relative standard deviations varied from 2.7 to 4.2% (n=12). Sample preparation was carried out by simple dilution in water or in water-soluble tertiary amines medium. Accuracy was checked by performing addition-recovery experiments as well as by using reference materials (whole milk powder, non-fat milk powder, and infant formula). Recoveries varied from 97.7 to 105.3% for Cu and Zn. All results obtained for reference materials were in agreement with certified values at a 95% confidence level.
650 $aFruit juices
650 $aMilk
653 $aCu
653 $aFAAS
653 $aFlame furnace
653 $aThermospray
653 $aZn
700 1 $aARRUDA, M. A. Z.
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aNÓBREGA, J. A.
773 $tTalanta$gv.64, n.4, p.912-917, nov. 2004.
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| 2. |  | TREVISAN, L. C.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. Acid vapor partial digestion of biological samples in a focused microwave: multielement determination by ICP OES with axially-viewed configuration. In: RIO SYMPOSIUM ON ATOMIC SPECTROMETRY, 7., 2002, Florianópolis, SC. ICP Information Newsletter, v.28, n.1, june 2002. p.136. Tu34.| Tipo: Resumo em Anais de Congresso |
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| 4. | | GARCIA, E. E.; PEREIRA, C. D.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. Avaliação da correção de sinais de fundo causados pelos íons diatômicos Ar2 + e CN+ em ICP-MS com interface CRI. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 15.; CONGRESSO IBEROAMERICANO DE QUÍMICA ANALÍTICA, 3., 2009, Salvador, BA. Anais... Salvador: SBQ: UFBA, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 13. | | SANTOS, D. M.; NOGUEIRA, A. R. de A.; NEVES, E. F. A.; NÓBREGA, J. A. Análise química e simulação do reagente CFA-C. In: ENCONTRO REGIONAL DE QUÍMICA DA SOCIEDADE BRASILEIRA DE QUÍMICA, 13.; SEMANA DA QUÍMICA, 31., 2001, Jaboticabal, SP. Anais... Jaboticabal: Instituto de Química-UNESP, 2001. p.70. QA-8.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| Registros recuperados : 168 | |
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