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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
10/11/2010 |
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Data da última atualização: |
19/07/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CARAPELLI, R.; GUERRA, M. B. B.; MIRANDA, K. dos A. de; PEREIRA FILHO, E. R.; NOGUEIRA, A. R. de A. |
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Afiliação: |
RODOLFO CARAPELLI, UFSCar/SÃO CARLOS, SP; MARCELO BRAGA BUENO GUERRA, UFSCar/SÃO CARLOS, SP; KELBER DOS ANJOS DE MIRANDA, UFSCar/SÃO CARLOS, SP; EDENIR RODRIGUES PEREIRA FILHO, UFSCar/SÃO CARLOS, SP; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
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Título: |
Potentialities of hydride generation atomic absorption spectrometry (HGAAS) in the fast sequential determination of AS, BI and SB. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: RIO SYMPOSIUM ON ATOMIC SPECTROMETRY, 11., 2010, Mar del Prata: Horiba, 2010. |
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Páginas: |
p. 169 |
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Idioma: |
Português |
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Conteúdo: |
In this study, a sensitive hydride generation method was combined with fast sequential flame atomic absorption spectrometry (FS-FAAS) for the sequential determination of As, Bi and Sb in water samples. A Doehlert design was performed to identify a compromise condition to determine sequentially the three elements. The best condition was reached using NaBH40.8 % mv-1as the reducing agent. Another four variables were also tested: HCI concentration as the carrier solution (2 to 10 mol L-1), KI concentration as the pre-reductor solution (1 to 7 % mv-1), employment of ascorbic acid (0 to 6 % mv-1) as auxiliary pre-reductor, and integration time (3 replicates of 0.5 to 2 s). All these evaluated conditions were not significant at the investigated levels. Therefore, the optimized parameters were: HCI 6 mol L-1 in order to avoid interferences from the matrix, KI 1 % mv-1 without ascorbic acid to reduce reagent consumption and waste generation, finally, because of the lower delay time (20s) of the measurements, integration time of 1 s with 5 replicates was employed to precision improvement. That delay time was chosen as the minimum time to signal stabilization after the entire signal profile examination. The linear ranges were from 0.5 to 1 0 ~g L-1 of As, Bi and Sb. The accuracy of the proposed method was checked using two Certified Reference Materials (CRM) related with trace metals in water, HPS-TMDW and NIST 1643e. The results obtained for both CRM were in agreement with the certified value, with the following recoveries: As (average of 76%), Bi (average of 104%), Sb (average of 89 %).The proposed method has several advantages for routine analysis of As, Bi and Sb in water such as: good sensitivity (LaD: 0.132mg L- 1for As, 0.088mg L-1for Bi and 0.110mg L-1for Sb; n=10), high analytical throughput (270 determinations per hour), and low reagent consumption when compared with single elements determinations. MenosIn this study, a sensitive hydride generation method was combined with fast sequential flame atomic absorption spectrometry (FS-FAAS) for the sequential determination of As, Bi and Sb in water samples. A Doehlert design was performed to identify a compromise condition to determine sequentially the three elements. The best condition was reached using NaBH40.8 % mv-1as the reducing agent. Another four variables were also tested: HCI concentration as the carrier solution (2 to 10 mol L-1), KI concentration as the pre-reductor solution (1 to 7 % mv-1), employment of ascorbic acid (0 to 6 % mv-1) as auxiliary pre-reductor, and integration time (3 replicates of 0.5 to 2 s). All these evaluated conditions were not significant at the investigated levels. Therefore, the optimized parameters were: HCI 6 mol L-1 in order to avoid interferences from the matrix, KI 1 % mv-1 without ascorbic acid to reduce reagent consumption and waste generation, finally, because of the lower delay time (20s) of the measurements, integration time of 1 s with 5 replicates was employed to precision improvement. That delay time was chosen as the minimum time to signal stabilization after the entire signal profile examination. The linear ranges were from 0.5 to 1 0 ~g L-1 of As, Bi and Sb. The accuracy of the proposed method was checked using two Certified Reference Materials (CRM) related with trace metals in water, HPS-TMDW and NIST 1643e. The results obtained for both CRM were in agreement with the certif... Mostrar Tudo |
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Palavras-Chave: |
Arsênio; Atomic absorption; Spectrometry (HAAGS). |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/866644/1/PROCI2010.00197.pdf
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Marc: |
LEADER 02609nam a2200205 a 4500
001 1866644
005 2011-07-19
008 2010 bl uuuu u00u1 u #d
100 1 $aCARAPELLI, R.
245 $aPotentialities of hydride generation atomic absorption spectrometry (HGAAS) in the fast sequential determination of AS, BI and SB.
260 $aIn: RIO SYMPOSIUM ON ATOMIC SPECTROMETRY, 11., 2010, Mar del Prata: Horiba$c2010
300 $ap. 169
520 $aIn this study, a sensitive hydride generation method was combined with fast sequential flame atomic absorption spectrometry (FS-FAAS) for the sequential determination of As, Bi and Sb in water samples. A Doehlert design was performed to identify a compromise condition to determine sequentially the three elements. The best condition was reached using NaBH40.8 % mv-1as the reducing agent. Another four variables were also tested: HCI concentration as the carrier solution (2 to 10 mol L-1), KI concentration as the pre-reductor solution (1 to 7 % mv-1), employment of ascorbic acid (0 to 6 % mv-1) as auxiliary pre-reductor, and integration time (3 replicates of 0.5 to 2 s). All these evaluated conditions were not significant at the investigated levels. Therefore, the optimized parameters were: HCI 6 mol L-1 in order to avoid interferences from the matrix, KI 1 % mv-1 without ascorbic acid to reduce reagent consumption and waste generation, finally, because of the lower delay time (20s) of the measurements, integration time of 1 s with 5 replicates was employed to precision improvement. That delay time was chosen as the minimum time to signal stabilization after the entire signal profile examination. The linear ranges were from 0.5 to 1 0 ~g L-1 of As, Bi and Sb. The accuracy of the proposed method was checked using two Certified Reference Materials (CRM) related with trace metals in water, HPS-TMDW and NIST 1643e. The results obtained for both CRM were in agreement with the certified value, with the following recoveries: As (average of 76%), Bi (average of 104%), Sb (average of 89 %).The proposed method has several advantages for routine analysis of As, Bi and Sb in water such as: good sensitivity (LaD: 0.132mg L- 1for As, 0.088mg L-1for Bi and 0.110mg L-1for Sb; n=10), high analytical throughput (270 determinations per hour), and low reagent consumption when compared with single elements determinations.
653 $aArsênio
653 $aAtomic absorption
653 $aSpectrometry (HAAGS)
700 1 $aGUERRA, M. B. B.
700 1 $aMIRANDA, K. dos A. de
700 1 $aPEREIRA FILHO, E. R.
700 1 $aNOGUEIRA, A. R. de A.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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| Registros recuperados : 20 | |
| 14. |  | DRECHSEL, M. M.; MARTELLETO, L. A. P.; VASCONCELLOS, M. A. S.; URQUIAGA, S.; RIBEIRO, R. de L. D.; XAVIER, G. R.; RUMJANEK, N. G. Determinação da biomassa microbiana no processo de decomposição de folhas de mamão crescidas sob diferentes condições de sombreamento. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 30., 2005, Recife. Solos: sustentabilidade e qualidade ambiental. Recife: Sociedade Brasileira de Ciência do Solo, 2005. 4 p. CD ROM.| Biblioteca(s): Embrapa Agrobiologia. |
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| 15. | | XAVIER, G. R.; KNUPP, A. M.; DRECHSEL, M. M.; JÚNIOR BATISTA, C. B.; BOHM, G.; ROMBALDI, C.; FARIA, J. C.; MEISSNER FILHO, P. E.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R.; CORREIA, M. E. F.; RUMJANEK, N. G. Biossegurança de plantas geneticamente modificadas: efeito sobre microrganismos não-alvo. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 28.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 12.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 10.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 7., 2008, Londrina. FertBio 2008: desafios para o uso do solo com eficiência e qualidade ambiental: anais. Londrina: Embrapa Soja: SBCS: IAPAR, UEL, 2008.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 16. | | XAVIER, G. R.; KNUPP, A. M.; DRECHSEL, M. M.; JÚNIOR BATISTA, C. B.; BOHM, G.; ROMBALDI, C.; FARIA, J. C.; MEISSNER FILHO, P. E.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R.; CORREIA, M. E. F.; RUMJANEK, N. G. Biossegurança de plantas geneticamente modificadas: efeito sobre microrganismos não-alvo. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 28., REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 12., SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 10., REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 7., 2008, Londrina. FertBio 2008: desafios para o uso do solo com eficiência e qualidade ambiental: anais. Londrina: Embrapa Soja: SBCS: IAPAR, UEL, 2008. 4 p. 1 CD-ROM. Parceria: UFRJ; Universidade Federal de Pelotas; Centro Federal de Educação Tecnológica de Pelotas; Embrapa Arroz e Feijão; Embrapa Mandioca e Fruticultura. Organizado por: Adilson de Oliveira Júnior, Regina Maria Villas Bôas de Campos...| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 17. | | DRECHSEL, M. M.; SOARES, C. DE P.; SILVA, P. R.; CARVALHO, P. DE A.; GALVÃO, P. G.; MENESES, C. H.; VIDAL, M. S.; NUNES, A. B.; REIS, V. M.; BALDANI, J. I. The multi-species inoculant for the brazilian sugarcane: The reasons for choosing the bacterial strains. INTERNATIONAL SYMPOSIUM ON BIOLOGICAL NITROGEN FIXATION WITH NON-LEGUMES, 13., 2012. Abstracts... Neuherberg: German Research Center for Environmental Health, 2012. 27| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 18. | | ROUWS, L. F. M.; MENESES, C. H. G.; GALVÃO, P. G.; VENTURA, H, G.; DRECHSEL, M. M.; SILVA, R. J.; VIDAL, M. S.; SIMÕES-ARAUJO, J. L.; TEIXEIRA, K. R. S.; SCHWAB, S.; BALDANI, J. I. Functional analysis of Gluconacetobacter diazotrophicus PAL5 genes involved in the nitogen fixation process and interaction with the plant. INTERNATIONAL INCT SYMPOSIUM ON BIOLOGICAL NITROGEN FIXATION, 1., 2009, Curitiba. Program and index... Brasilia: INCT, 2009. 01p| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 19. | | ROUWS, L. F. M.; MENESSES, C. H. G.; GALVÃO, P. G.; VENTURA, H. G.; DRECHSEL, M. M.; SILVA, R. J.; VIDAL, M. S.; SIMÕES-ARAUJO, J. L.; TEIXEIRA, K. R. S.; SCHWAB, S.; BALDANI, J. I. Functional analysis of Gluconacetobacter diazotrophicus PAL5 genes involved in the nitrogen fixation processs and interaction with the plant. INTERNATIONAL INCT SYMPOSIUM ON BIOLOGICAL NITROGEN FIXATION, 1., 2009, Curitiba. Program and index... Brasilia: INCT, 2009. 01p| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 20. | | XAVIER, G. R.; KNUPP, A. M.; DRECHSEL, M. M.; JÚNIOR BATISTA, C. B.; BOHM, G.; ROMBALDI, C.; FARIA, J. C. de; MEISSNER FILHO, P. E.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R.; CORREIA, M. E. F.; RUMJANEK, N. G. Biossegurança de plantas geneticamente modificadas: efeito sobre microrganismos não-alvo. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 28.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 12.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 10.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 7., 2008, Londrina. FertBio 2008: desafios para o uso do solo com eficiência e qualidade ambiental: anais. Londrina: Embrapa Soja: SBCS: IAPAR, UEL, 2008. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 20 | |
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