Design and evaluation of a continuous flow, integrated nebulizer-hydride generator for flame atomic absorption spectrometry
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..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2008 |
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| Erschienen: |
2008 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:31 |
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| Enthalten in: |
Química Nova - 31(2008), 6, Seite 1315-1318 |
| Sprache: |
Englisch ; Spanisch ; Portugiesisch |
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| Beteiligte Personen: |
Miguel Murillo [VerfasserIn] |
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| Links: |
doi.org [kostenfrei] |
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| Themen: |
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| doi: |
10.1590/S0100-40422008000600008 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
DOAJ033836663 |
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| 520 | |a 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. | ||
| 650 | 4 | |a nebulizer-hydride generation | |
| 650 | 4 | |a arsenic | |
| 650 | 4 | |a selenium | |
| 653 | 0 | |a Chemistry | |
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| 700 | 0 | |a Jorge Colmenares |e verfasserin |4 aut | |
| 700 | 0 | |a Juan Romero |e verfasserin |4 aut | |
| 700 | 0 | |a Gladys Alvarado |e verfasserin |4 aut | |
| 700 | 0 | |a Manuel Ríos |e verfasserin |4 aut | |
| 700 | 0 | |a Freddy Angulo |e verfasserin |4 aut | |
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