Determination of traces of sulfur in selenium by molecular emission cavity analysis |
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| Authors: | Th.A. Kouimtzis |
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| Affiliation: | Laboratory of Analytical Chemistry, University of Thessaloniki, ThessalonikiGreece |
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| Abstract: | The selenium sample (ca. 1 mg) containing 40–90 μg g-1 sulfur is decomposed in a combustion apparatus and the evolved sulfur dioxide is adsorbed on about 30 mg of silica gel. The silica gel is deposited in a cavity and the sulfur is determined by molecular emission cavity analysis. Incomplete sulfur recoveries (86 ± 4%) caused by incomplete conversion to sulfur dioxide necessitate a correction factor. |
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