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| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.contributor.author | FERNANDES, K. G. | |
| dc.contributor.author | NOGUEIRA, A. R. de A. | |
| dc.contributor.author | GOMES NETO, J. A. | |
| dc.contributor.author | NÓBREGA, J. A. | |
| dc.date.accessioned | 2026-08-13T21:15:44Z | - |
| dc.date.available | 2026-08-13T21:15:44Z | - |
| dc.date.created | 2004-11-24 | |
| dc.date.issued | 2004 | |
| dc.identifier.citation | Journal of Braziliand Chemical Society, v.15, n.5, p.676-681, 2004. | |
| dc.identifier.uri | http://www.alice.cnptia.embrapa.br/alice/handle/doc/46881 | - |
| dc.description | 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. | |
| dc.language.iso | eng | |
| dc.rights | openAccess | |
| dc.subject | ETAAS | |
| dc.subject | Preconcentration | |
| dc.subject | Hot injecction | |
| dc.title | Determination of vanadium in urine by electrothermal atomic absorption spectrometry using hot injection and preconcentration into the graphite tube. | |
| dc.type | Artigo de periódico | |
| dc.subject.nalthesaurus | Urine | |
| dc.subject.nalthesaurus | Vanadium | |
| riaa.ainfo.id | 46881 | |
| riaa.ainfo.lastupdate | 2023-10-20 | |
| dc.contributor.institution | KELLY G. FERNANDES, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOSÉ A. GOMES NETO, UNESP; JOAQUIM A. NÓBREGA, UFSCAR. | |
| Aparece en las colecciones: | Artigo em periódico indexado (CPPSE)  | |
Ficheros en este ítem:
| Fichero | Tamaño | Formato | |
|---|---|---|---|
| 21957.pdf | 331,79 kB | Adobe PDF | Visualizar/Abrir |
