| Elimination of hydrofluoric acid interference in the determination of antimony by the hydride generation technique. | |
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MedLine Citation:
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PMID: 18967064 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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For the determination of antimony by hydride generation techniques a pretreatment procedure has been developed for the reduction of Sb(V) to Sb(III) in order to remove the effect of hydrofluoric acid which strongly interferes with the reduction of pentavalent antimony to the trivalent state. It is based on the combined action of l-cysteine and boric acid at 80 degrees C. The pretreatment is effective in both nitric and hydrochloric acid media. Quantitative recoveries are obtained in less than 60 min. Under these conditions antimony is reduced to the trivalent state in acid media containing both nitric and hydrochloric acid. The method has been applied to the determination of total antimony in certified reference materials of sediments after pressurized microwave digestion with HNO(3)-HCl-HF. Good agreement is obtained by using both analytical techniques: continuous flow hydride generation atomic fluorescence spectrometry and flow injection electrothermal atomic absorption spectrometry with in-situ trapping of stibine in a graphite atomizer. |
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Authors:
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A D'Ulivo; L Lampugnani; D Faraci; D L Tsalev; R Zamboni |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Talanta Volume: 45 ISSN: 0039-9140 ISO Abbreviation: Talanta Publication Date: 1998 Mar |
Date Detail:
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Created Date: 2008-10-30 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2984816R Medline TA: Talanta Country: England |
Other Details:
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Languages: eng Pagination: 801-6 Citation Subset: - |
Affiliation:
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C.N.R., Istituto di Chimica Analitica, Strumentale, Via Risorgimento 35, 56126 Pisa, Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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