| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
|
Data corrente: |
24/11/2004 |
|
Data da última atualização: |
31/05/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
FERNANDES, K. G.; NOGUEIRA, A. R. de A.; GOMES NETO, J. A.; NÓBREGA, J. A. |
|
Afiliação: |
KELLY G. FERNANDES, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOSÉ A. GOMES NETO, UNESP; JOAQUIM A. NÓBREGA, UFSCAR. |
|
Título: |
Determination of vanadium in urine by electrothermal atomic absorption spectrometry using hot injection and preconcentration into the graphite tube. |
|
Ano de publicação: |
2004 |
|
Fonte/Imprenta: |
Journal of Braziliand Chemical Society, v.15, n.5, p.676-681, 2004. |
|
Idioma: |
Inglês |
|
Conteúdo: |
In this work it was developed a procedure for the determination of vanadium in urine samples by electrothermal atomic absorption spectrometry using successive injections for preconcentration into a preheated graphite tube. Three 60?L volumes were sequentially injected into the atomizer preheated to a temperature of 110 ºC. Drying and pyrolysis steps were carried out after each injection. A chemical modifier, barium difluoride (100 mg L-1), and a surfactant, Triton X-100 (0.3% v v-1), were added to the urine sample. When injecting into a hot graphite tube, the sample flow-rate was 0.5?L s-1. The limits of detection and quantification were 0.54 and 1.82 without preconcentration, and 0.11 and 0.37 ?g L-1 with preconcentration, respectively. The accuracy of the procedure was evaluated by an addition-recovery experiment employing urine samples. Recoveries varied from 96.0 to 103% for additions ranging from 0.8 to 3.5 ?g L -1 V. The developed procedure allows the determination of vanadium in urine without any sample pretreatment and with minimal dilution of the sample. |
|
Palavras-Chave: |
ETAAS; Hot injecction; Preconcentration. |
|
Thesaurus Nal: |
urine; vanadium. |
|
Categoria do assunto: |
W Química e Física |
|
Marc: |
LEADER 01782naa a2200217 a 4500
001 1046881
005 2022-05-31
008 2004 bl uuuu u00u1 u #d
100 1 $aFERNANDES, K. G.
245 $aDetermination of vanadium in urine by electrothermal atomic absorption spectrometry using hot injection and preconcentration into the graphite tube.$h[electronic resource]
260 $c2004
520 $aIn this work it was developed a procedure for the determination of vanadium in urine samples by electrothermal atomic absorption spectrometry using successive injections for preconcentration into a preheated graphite tube. Three 60?L volumes were sequentially injected into the atomizer preheated to a temperature of 110 ºC. Drying and pyrolysis steps were carried out after each injection. A chemical modifier, barium difluoride (100 mg L-1), and a surfactant, Triton X-100 (0.3% v v-1), were added to the urine sample. When injecting into a hot graphite tube, the sample flow-rate was 0.5?L s-1. The limits of detection and quantification were 0.54 and 1.82 without preconcentration, and 0.11 and 0.37 ?g L-1 with preconcentration, respectively. The accuracy of the procedure was evaluated by an addition-recovery experiment employing urine samples. Recoveries varied from 96.0 to 103% for additions ranging from 0.8 to 3.5 ?g L -1 V. The developed procedure allows the determination of vanadium in urine without any sample pretreatment and with minimal dilution of the sample.
650 $aurine
650 $avanadium
653 $aETAAS
653 $aHot injecction
653 $aPreconcentration
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aGOMES NETO, J. A.
700 1 $aNÓBREGA, J. A.
773 $tJournal of Braziliand Chemical Society$gv.15, n.5, p.676-681, 2004.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Agroenergia; Embrapa Amazônia Ocidental. |
|
Data corrente: |
19/06/2018 |
|
Data da última atualização: |
19/06/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
FARIAS, M. P. de; CAPDEVILLE, G. de; FALCAO, R.; MORAES, P. B. de; LEAO, A. P.; CAMILLO, J.; CUNHA, R. N. V. da; ALVES, A. A.; SOUZA JUNIOR, M. T. |
|
Afiliação: |
MARCELO PICANÇO DE FARIAS; GUY DE CAPDEVILLE, CNPAE; ROSANA FALCAO, CNPAE; PRISCILA BORGES DE MORAES; ANDRE PEREIRA LEAO, CNPAE; JULCÉIA CAMILLO; RAIMUNDO NONATO VIEIRA DA CUNHA; ALEXANDRE ALONSO ALVES, CNPAE; MANOEL TEIXEIRA SOUZA JUNIOR, CNPAE. |
|
Título: |
Microscopic characterization of American oil palm (Elaeis oleifera (Kunth) Cortés) floral development. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Flora, v. 243, p. 88-100, 2018. |
|
Idioma: |
Inglês |
|
Palavras-Chave: |
Inflorescence. |
|
Thesagro: |
Caiaué; Elaeis Guineensis. |
|
Thesaurus NAL: |
Cytogenetics; In situ hybridization; Microsporocytes. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 00804naa a2200277 a 4500
001 2092594
005 2018-06-19
008 2018 bl uuuu u00u1 u #d
100 1 $aFARIAS, M. P. de
245 $aMicroscopic characterization of American oil palm (Elaeis oleifera (Kunth) Cortés) floral development.$h[electronic resource]
260 $c2018
650 $aCytogenetics
650 $aIn situ hybridization
650 $aMicrosporocytes
650 $aCaiaué
650 $aElaeis Guineensis
653 $aInflorescence
700 1 $aCAPDEVILLE, G. de
700 1 $aFALCAO, R.
700 1 $aMORAES, P. B. de
700 1 $aLEAO, A. P.
700 1 $aCAMILLO, J.
700 1 $aCUNHA, R. N. V. da
700 1 $aALVES, A. A.
700 1 $aSOUZA JUNIOR, M. T.
773 $tFlora$gv. 243, p. 88-100, 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agroenergia (CNPAE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
