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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: |
GUERRA, M. B. B.; NOGUEIRA, A. R. de A.; SILVA, P. H. T.; PEREIRA FILHO, E. R. |
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Afiliação: |
MARCELO BRAGA BUENO GUERRA, UFSCar/SÃO CARLOS, SP.; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; PATRICIA HELENA TONIOLO SILVA, UFSCar/SÃO CARLOS, SP.; EDENIR RODRIGUES PEREIRA FILHO, UFSCar/SÃO CARLOS, SP. |
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Título: |
Acid digestion for cadmium determination in mineral salt mixing for animal nutrition by thermospra y flame furnace Atomic absorption spectrometry. |
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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. 336 |
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Idioma: |
Português |
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Conteúdo: |
Cadmium was determined in a sample of mineral salt mixing to milk cattle that has been preparing to be a reference material. A volume of 3 mL of HNO3 3.0 mol L-1 plus 2.0 of H202 30% (W w-1) was added to 250 mg of sample in a cavity microwave oven. After digestion performance the volume was adjusted to 10 mL with water, centrifuged and the supernatant determined by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS). The system consist of a peristaltic pump, a lab-made commutator injector, and the thermospray flame furnace unit, which includes the ceramic capillary (0.5 mm 10,2.0 mm ED and 100 mm of length) and the Ni tube (10 cm) which is located on the AAS burner. For reaching a higher temperature inside the tube, six holes of 2 mm diameter were drilled in the bottom of the tube. Another orifice was drilled at 90' to the bottom holes for inserting the thermospray capillary. The capillary tip is about 1 mm inside the tube furnace. The manifold was assembled with 0.5 mm i.d. PTFE tubing, sample volume of 1 00 uL, 0.5 mL min-1 of flow rate, and 0.5 % (w v-1) EDTA plus 0.1 % (v v-1) Triton X 100 as carrier stream. Limits of detection (LOD) and quantification (LOQ) 'obtained were 0.31~g L-1 and 1.02~gL-1, respectively. The obtained results were 402 +- 35ug L-1. The accuracy was checked by performing GFAAS (465 +-95ug L-1) and the results proved to be similar by using t test. The high rsd in the GFAAS was probably due the high chloride sample amount. |
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Palavras-Chave: |
Acid digestion; Atomic absorption; Spectrometry. |
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Thesaurus Nal: |
animal nutrition. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/37803/1/PROCI-2010.00194.pdf
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Marc: |
LEADER 02176nam a2200205 a 4500
001 1866622
005 2011-07-19
008 2010 bl uuuu u00u1 u #d
100 1 $aGUERRA, M. B. B.
245 $aAcid digestion for cadmium determination in mineral salt mixing for animal nutrition by thermospra y flame furnace Atomic absorption spectrometry.
260 $aIn: RIO SYMPOSIUM ON ATOMIC SPECTROMETRY, 11., 2010, Mar del Prata: Horiba$c2010
300 $ap. 336
520 $aCadmium was determined in a sample of mineral salt mixing to milk cattle that has been preparing to be a reference material. A volume of 3 mL of HNO3 3.0 mol L-1 plus 2.0 of H202 30% (W w-1) was added to 250 mg of sample in a cavity microwave oven. After digestion performance the volume was adjusted to 10 mL with water, centrifuged and the supernatant determined by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS). The system consist of a peristaltic pump, a lab-made commutator injector, and the thermospray flame furnace unit, which includes the ceramic capillary (0.5 mm 10,2.0 mm ED and 100 mm of length) and the Ni tube (10 cm) which is located on the AAS burner. For reaching a higher temperature inside the tube, six holes of 2 mm diameter were drilled in the bottom of the tube. Another orifice was drilled at 90' to the bottom holes for inserting the thermospray capillary. The capillary tip is about 1 mm inside the tube furnace. The manifold was assembled with 0.5 mm i.d. PTFE tubing, sample volume of 1 00 uL, 0.5 mL min-1 of flow rate, and 0.5 % (w v-1) EDTA plus 0.1 % (v v-1) Triton X 100 as carrier stream. Limits of detection (LOD) and quantification (LOQ) 'obtained were 0.31~g L-1 and 1.02~gL-1, respectively. The obtained results were 402 +- 35ug L-1. The accuracy was checked by performing GFAAS (465 +-95ug L-1) and the results proved to be similar by using t test. The high rsd in the GFAAS was probably due the high chloride sample amount.
650 $aanimal nutrition
653 $aAcid digestion
653 $aAtomic absorption
653 $aSpectrometry
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aSILVA, P. H. T.
700 1 $aPEREIRA FILHO, E. R.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
27/02/2009 |
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Data da última atualização: |
18/03/2014 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
PINTO, F. de S.; ABREU, D. C. A. de; MEDEIROS, A. C. de S. |
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Afiliação: |
Fernanda de Souza Pinto, Faculdades Integradas Espírita; Daniela Cleide Azevedo de Abreu, Universidade Estadual de Goiás; Antonio Carlos de Souza Medeiros, Pesquisador aposentado da Embrapa Florestas. |
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Título: |
Teste de germinação e determinação do grau de umidade em sementes de pata-de-vaca (Bauhinia forficata Link.). |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 7., 2008, Colombo. Anais. Colombo: Embrapa Florestas, 2008. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
Resumo. |
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Palavras-Chave: |
Contagem. |
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Thesagro: |
Patógeno; Semente Florestal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/99579/1/2008-RAC-TesteGerminacaoDeterminacao.pdf
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Marc: |
LEADER 00627nam a2200181 a 4500
001 1315548
005 2014-03-18
008 2008 bl uuuu u00u1 u #d
100 1 $aPINTO, F. de S.
245 $aTeste de germinação e determinação do grau de umidade em sementes de pata-de-vaca (Bauhinia forficata Link.).
260 $aIn: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 7., 2008, Colombo. Anais. Colombo: Embrapa Florestas$c2008
300 $c1 CD-ROM.
500 $aResumo.
650 $aPatógeno
650 $aSemente Florestal
653 $aContagem
700 1 $aABREU, D. C. A. de
700 1 $aMEDEIROS, A. C. de S.
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Embrapa Florestas (CNPF) |
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