Design and evaluation of a continuous flow, integrated nebulizer-hydride generator for flame atomic absorption spectrometry
AUTOR(ES)
Murillo, Miguel, Carrión, Nereida, Colmenares, Jorge, Romero, Juan, Alvarado, Gladys, Ríos, Manuel, Angulo, Freddy
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2008
RESUMO
An evaluation of the performance of a continuous flow hydride generator-nebulizer for flame atomic absorption spectrometry was carried out. Optimization of nebulizer gas flow rate, sample acid concentration, sample and tetrahydroborate uptake rates and reductant concentration, on the As and Se absorbance signals was carried out. A hydrogen-argon flame was used. An improvement of the analytical sensitivity relative to the conventional bead nebulizer used in flame AA was obtained (2 (As) and 4.8 (Se) µg L-1). Detection limits (3σb) of 1 (As) and 1.3 (Se) µg L-1 were obtained. Accuracy of the method was checked by analyzing an oyster tissue reference material.
Documentos Relacionados
- Hydride generation-in situ trapping-flame atomic absorption spectrometry hybridization for indium and thallium determination
- Determination of trace lead in waters by flow injection hydride generation atomic absorption spectrometry
- Immobilized stearic acid as a new sorbent for on-line preconcentration and determination of lead by flow injection flame atomic absorption spectrometry
- Slurry sampling for arsenic determination in sediments by hydride generation atomic absorption spectrometry
- Combination of solid phase extraction and flame atomic absorption spectrometry for trace analysis of cadmium