| DOI | Trouver le DOI : https://doi.org/10.1021/ac9608026 |
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| Auteur | Rechercher : Ding, W. W.1; Rechercher : Sturgeon, R.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut des étalons nationaux de mesure du CNRC
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| Format | Texte, Article |
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| Résumé | A new hydride generator has been characterized for use with the acid−NaBH4 hydride generation systems based on the insertion of a capillary tube into the sample introduction channel of a standard Meinhard nebulizer. The acidic sample and the tetrahydroborate solution are mixed at a merge point 1.5 cm from the end of the nebulizer orifice. Nebulization of the reaction solutions into a 0.7 mL tubular “spray chamber” follows a very short mixing time (less than 0.012 s) of the reagents. This approach permits 10 000 μg/mL Ni2+ or Cr3+ to be present in the sample solution without producing any interferences. Additionally, in the presence of Fe3+ added as a “releasing agent”, 5000 μg/mL Co2+ or 160 μg/mL Cu2+ can also be tolerated without interference. An 80 ± 2% generation efficiency is attained for the test element selenium. A detection limit of 6 μg/L (3σb) is achieved with ICP-AES detection. Precision of replicate measurements at the 12 μg/L level varies from 5 to 12% relative standard deviation. |
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| Date de publication | 1997 |
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| Dans | |
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| Langue | anglais |
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| Numéro du CNRC | NRC-INMS-848 |
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| Numéro NPARC | 5763610 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 15a8a5cb-1315-44f6-bdb9-56b8ac3152f9 |
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| Enregistrement créé | 2009-03-29 |
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| Enregistrement modifié | 2020-03-20 |
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