Abstract
ABSTRACT The behaviour of thermally reduced or electrodeposited iridium modifier in graphite furnace atomic absorption spectrometry (GFAAS) for the determination of selenium was investigated. The performance of modification for standard solution of selenium as well as in the presence of chloride containing matrix (e.g. sea water) was examined. It was found that the graphite material plays a significant role in the determination of volatile elements by the formation of graphite intercalation compounds. Those compounds are responsible for the long-term performance of stabilisation of selenium in chloride containing solutions.
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