Study of interferences in the determination of lead by hydride generation-direct flame atomic-absorption spectrometry when oxidising agents are employed to increase the sensitivity
- 1 January 1985
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 110 (10) , 1219-1221
- https://doi.org/10.1039/an9851001219
Abstract
The greatest sensitivity in the determination of lead by hydride generation-direct flame AAS is obtained in the presence of ammonium persulphate (0.012 µg). A complete interference study is reported, comparing the results obtained when hydrogen peroxide and ammonium persulphate are employed. The oxidation to a metastable tetravalent state of lead by the prior action of the oxidising agent is considered to be the mechanism by which the atomic-absorption signal in increased.Keywords
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