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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
03/05/2011 |
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Data da última atualização: |
29/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GUERRA, M. B. B.; CARAPELLI, R.; MIRANDA, K.; NOGUEIRA, A. R. de A.; PEREIRA FILHO, E. R. |
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Afiliação: |
MARCELO BRAGA BUENO GUERRA, UNIVERSIDADE FEDERAL DE SÃO CARLOS/SÃO CARLOS, SP; RODOLFO CARAPELLI, UFSCar/SÃO CARLOS, SP; KELBER MIRANDA, UFSCar/SÃO CARLOS, SP; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; EDENIR RODRIGUES PEREIRA FILHO, UFSCar/SÃO CARLOS, SP. |
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Título: |
Determination of As and Sb in mineral waters by fast sequential continuous flow hydride generation atomic absorption spectrometry. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Analytical Methods, v. 3, p. 599-604, 2011. |
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Idioma: |
Português |
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Conteúdo: |
In this study, a novel analytical method which consists of a combination of Fast Sequential Flame Atomic Absorption Spectrometry (FS-FAAS) and Continuous Flow Hydride Generation Atomic Absorption Spectrometry (CF-HGAAS) is proposed. The method developed was employed for the sequential determination of As and Sb at sub-mg L1 levels in bottled mineral waters. A strong enhancement in the analytical throughput was obtained when compared with the traditional monoelement CF-HGAAS with a quartz tube atomizer (QTA). Variables which would affect the method performance such as Ar flow rate, HCl and NaBH4 concentrations as well as delay and integration time were optimized. A flame atomic absorption spectrometer working in fast sequential mode was used in all experiments. After just 20 s of read delay, As and Sb were sequentially determined in 6 s (3 s each element). A 262 fractional factorial design was employed for studies of potential interferents with transition metals that could be present in mineral water samples. Limits of detection obtained for As and Sb were 0.15 and 0.14 mg L1, respectively. The accuracy of the proposed method was checked by the use of 2 certified reference materials: Trace elements in water (NIST 1643e) and Trace metals in drinking water (HPS TMDW). Good agreement between certified and found concentrations was observed. Finally, As and Sb were determined in commercial bottled mineral water samples. Adequate sensitivity, high throughput and minimization of reagents and sample consumption are the attractive features of this new method. MenosIn this study, a novel analytical method which consists of a combination of Fast Sequential Flame Atomic Absorption Spectrometry (FS-FAAS) and Continuous Flow Hydride Generation Atomic Absorption Spectrometry (CF-HGAAS) is proposed. The method developed was employed for the sequential determination of As and Sb at sub-mg L1 levels in bottled mineral waters. A strong enhancement in the analytical throughput was obtained when compared with the traditional monoelement CF-HGAAS with a quartz tube atomizer (QTA). Variables which would affect the method performance such as Ar flow rate, HCl and NaBH4 concentrations as well as delay and integration time were optimized. A flame atomic absorption spectrometer working in fast sequential mode was used in all experiments. After just 20 s of read delay, As and Sb were sequentially determined in 6 s (3 s each element). A 262 fractional factorial design was employed for studies of potential interferents with transition metals that could be present in mineral water samples. Limits of detection obtained for As and Sb were 0.15 and 0.14 mg L1, respectively. The accuracy of the proposed method was checked by the use of 2 certified reference materials: Trace elements in water (NIST 1643e) and Trace metals in drinking water (HPS TMDW). Good agreement between certified and found concentrations was observed. Finally, As and Sb were determined in commercial bottled mineral water samples. Adequate sensitivity, high throughput and minimization of rea... Mostrar Tudo |
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Palavras-Chave: |
As and Sb; Atomic absorption; Mineral waters; Spectrometry. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02251naa a2200217 a 4500
001 1887516
005 2023-06-29
008 2011 bl uuuu u00u1 u #d
100 1 $aGUERRA, M. B. B.
245 $aDetermination of As and Sb in mineral waters by fast sequential continuous flow hydride generation atomic absorption spectrometry.$h[electronic resource]
260 $c2011
520 $aIn this study, a novel analytical method which consists of a combination of Fast Sequential Flame Atomic Absorption Spectrometry (FS-FAAS) and Continuous Flow Hydride Generation Atomic Absorption Spectrometry (CF-HGAAS) is proposed. The method developed was employed for the sequential determination of As and Sb at sub-mg L1 levels in bottled mineral waters. A strong enhancement in the analytical throughput was obtained when compared with the traditional monoelement CF-HGAAS with a quartz tube atomizer (QTA). Variables which would affect the method performance such as Ar flow rate, HCl and NaBH4 concentrations as well as delay and integration time were optimized. A flame atomic absorption spectrometer working in fast sequential mode was used in all experiments. After just 20 s of read delay, As and Sb were sequentially determined in 6 s (3 s each element). A 262 fractional factorial design was employed for studies of potential interferents with transition metals that could be present in mineral water samples. Limits of detection obtained for As and Sb were 0.15 and 0.14 mg L1, respectively. The accuracy of the proposed method was checked by the use of 2 certified reference materials: Trace elements in water (NIST 1643e) and Trace metals in drinking water (HPS TMDW). Good agreement between certified and found concentrations was observed. Finally, As and Sb were determined in commercial bottled mineral water samples. Adequate sensitivity, high throughput and minimization of reagents and sample consumption are the attractive features of this new method.
653 $aAs and Sb
653 $aAtomic absorption
653 $aMineral waters
653 $aSpectrometry
700 1 $aCARAPELLI, R.
700 1 $aMIRANDA, K.
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aPEREIRA FILHO, E. R.
773 $tAnalytical Methods$gv. 3, p. 599-604, 2011.
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Embrapa Pecuária Sudeste (CPPSE) |
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| Registros recuperados : 26 | |
| 6. |  | CARAPELLI, R.; MENEZES, E. A.; CHAVES, F. S.; SOUZA, G. B.; NOGUEIRA, A. R. de A. Avaliação de métodos de análise de fibras de detergente neutro utilizando forno de microondas " caseiro". In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE QUÍMICA, 29., 2006, Águas de Lindóia, SP. Anais... Águas de Lindóia: SBQ, 2006.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 14. | | SOARES, F. S. C; CARAPELLI, R.; BOSSU, C. M.; ALONSO CHAMARRO, J.; NOGUEIRA, A. R. de A. Cinética da adsorção de Cd, Co, Cr, Cu, K, Ni e Zn em soluções aquosas usando zeólita natural integrada à tecnologia LTCC. 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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| 15. | | CARAPELLI, R.; GONZALES, M. H.; MENEZES, E. A.; CHAVES, F. S.; SOUZA, G. B. de; NOGUEIRA, A. R. de A. Emprego de radiação microondas como método alternativo na análise de fibras em detergente neutro. In: SIMPÓSIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PECUÁRIA SUDESTE, 2006, São Carlos, SP. Anais... São Carlos: Embrapa Pecuária Sudeste, 2006.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
|  |
| 18. | | CARAPELLI, R.; GUERRA, M. B. B.; MIRANDA, K. dos A. de; PEREIRA FILHO, E. R.; NOGUEIRA, A. R. de A. Potentialities of hydride generation atomic absorption spectrometry (HGAAS) in the fast sequential determination of AS, BI and SB. In: RIO SYMPOSIUM ON ATOMIC SPECTROMETRY, 11., 2010, Mar del Prata: Horiba, 2010. p. 169| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 19. | | CARAPELLI, R.; GROMBONI, C. F.; GOMES, M. S.; MIRANDA, K. A.; PEREIRA-FILHO, E. R.; NOGUEIRA, A. R. de A. Utilização de ferramentas quimiométricas e ICP OES para determinação de constituintes inorgânicos em alimentos estimulantes. In: ENCONTRO NACIONAL SOBRE CONTAMINANTES INORGÂNICOS 11.; SIMPÓSIO SOBRE ESSENCIALIDADE DE ELEMENTOS NA NUTRIÇÃO HUMANA, 6., 2008, Campinas. Anais... Campinas: Unicamp: GAGI: IQ, 2008. 185-187| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| Registros recuperados : 26 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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