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Registro Completo |
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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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| Registros recuperados : 34 | |
| 3. |  | SILVA, A. B. S. da; PEREIRA FILHO, E. R.; NOGUEIRA, A. R. de A. Direct determination of TiO2 as Ti used as digestibility marker in bovine faeces by Laser-Induced Breakdown Spectroscopy (LIBS). In: COLLOQUIUM SPECTROSCOPICUM INTERNATIONALE, 40., EURO-MEDITERRANEAN SYMPOSIUM ON LIBS, 9., 2017, Pisa, Italy. Proceedings... Pisa, Italy: IUPAC, 2017. p. 52.| Tipo: Resumo em Anais de Congresso |
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| 12. | | DIB, S. R.; TULLIO, R. R.; NASSU, R. T.; PEREIRA FILHO, E. R.; NOGUEIRA, A. R. de A. Determinação de metais por técnicas espectroanalíticas em amostras de carne e sangue de bovinos submetidos à dieta com adição de erva-mate (Ilex paraguariensis, St. Hilaire). In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 18., 2016, Florianópolis. Anais... Florianópolis: SBQ, 2016.| Tipo: Resumo em Anais de Congresso |
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| 15. | | 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 |
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| 18. | | 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.| Tipo: Resumo em Anais de Congresso |
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| 19. | | COUTINHO, H. L. C.; LIGO, M. A. V.; . NOVELLI, A. F.; BETTANIN, V. C.; PEREIRA FILHO, E. R. Monitoramento da população de microrganismos amonificadores e nitrificadores e de taxas de amonificação e nitrificação em solos sob cultivo de cana-de-açúcar na região de Ribeirão Preto, SP. In: CONGRESSO LATINO-AMERICANO DE CIENCIA DO SOLO, 13., 1996, Aguas de Lindoia. Resumos. Piracicaba: ESALQ / SBCS, 1996. CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 20. | | 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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| Registros recuperados : 34 | |
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