Determination of inorganic and organotin compounds in sea water by graphite furnace atomic absorption spectrometry
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Analytical Atomic Spectrometry
- Vol. 3 (1) , 119-123
- https://doi.org/10.1039/ja9880300119
Abstract
Inorganic tin and organotin compounds in artificial sea water were determined at sub-p.p.b. levels. These compounds are separated from matrix elements in aqueous solutions by benzene extraction of their iodide forms from a 2 M sulphuric acid-1.5 M sodium iodide solution containing 1%m/V ascorbic acid. The organic phase was partially vaporised to pre-concentrate the analytes and was injected directly into the treated graphite tube; the signal was measured by a Zeeman atomic absorption spectrometer. Using a matrix modifier, inorganic tin could be directly determined at sub-p.p.m. levels in the presence of organotin compounds.Keywords
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