Interferences from nickel, lead, copper and silver and their elimination in the determination of mercury by cold vapour atomic-absorption spectrometry exemplified by fly ash assays
- 1 January 1984
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 109 (3) , 309-311
- https://doi.org/10.1039/an9840900309
Abstract
The determination of mercury in the presence of metal ions (nickel, lead, copper and silver) was studied by cold vapour atomic-absorption spectrometry. The results unambiguously showed serious depressing interferences. However, by using EDTA as a complexing agent these interferences could be completely eliminated over a wide concentration range for nickel, lead and copper. For silver the interference could be only partly eliminated. Some fly ash samples were examined with and without EDTA addition.Keywords
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