Interferences by transition metals and their elimination by cyanide as a complexing agent in the determination of arsenic using continuous flow HG-ICP-AES
Identifieur interne : 001067 ( Main/Exploration ); précédent : 001066; suivant : 001068Interferences by transition metals and their elimination by cyanide as a complexing agent in the determination of arsenic using continuous flow HG-ICP-AES
Auteurs : B. Jamoussi [Tunisie] ; M. Zafzouf [Tunisie] ; B. Ben Hassine [Tunisie]Source :
- Fresenius' Journal of Analytical Chemistry [ 0937-0633 ] ; 1996-11-01.
Abstract
Abstract: The interfering effects of various foreign ions on the determination of arsenic were studied by hydride generation inductively coupled plasma atomic emission spectrometry (HG-ICP-AES). There were serious inhibiting interferences by Cu, Pb, Co, Au, Pd and Ni. However, by using cyanide as a complexing agent these interferences could be completely eliminated over a wide range of interferent concentration. The optimum chemical parameters for continuous arsine generation were studied. A major advantage of this technique is that it only needs low acid concentrations and produces less hazardous waste. Sensivity, selectivity and accuracy of the determination of arsenic by HG-ICP-AES were investigated. The detection limit (in 1 mol/1 HCl medium) for arsenic(III) was 0.82 ng/ml. The relative standard deviation for ten determinations of a solution containing 50 ng/ml arsenic was 1.3%.
Url:
DOI: 10.1007/s0021663560331
Affiliations:
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There were serious inhibiting interferences by Cu, Pb, Co, Au, Pd and Ni. However, by using cyanide as a complexing agent these interferences could be completely eliminated over a wide range of interferent concentration. The optimum chemical parameters for continuous arsine generation were studied. A major advantage of this technique is that it only needs low acid concentrations and produces less hazardous waste. Sensivity, selectivity and accuracy of the determination of arsenic by HG-ICP-AES were investigated. The detection limit (in 1 mol/1 HCl medium) for arsenic(III) was 0.82 ng/ml. The relative standard deviation for ten determinations of a solution containing 50 ng/ml arsenic was 1.3%.</div></front></TEI><affiliations><list><country><li>Tunisie</li></country><region><li>Gouvernorat de Tunis</li></region><settlement><li>Tunis</li></settlement></list><tree><country name="Tunisie"><region name="Gouvernorat de Tunis"><name sortKey="Jamoussi, B" sort="Jamoussi, B" uniqKey="Jamoussi B" first="B." last="Jamoussi">B. Jamoussi</name></region><name sortKey="Ben Hassine, B" sort="Ben Hassine, B" uniqKey="Ben Hassine B" first="B." last="Ben Hassine">B. Ben Hassine</name><name sortKey="Zafzouf, M" sort="Zafzouf, M" uniqKey="Zafzouf M" first="M." last="Zafzouf">M. Zafzouf</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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