Amperometric complex-formation titration of traces of thorium.
Thorium has been determined in the microgram range by complexometric titration with EDTA. The end-point was detected by following the anodic wave of EDTA at a rotating mercury electrode. It has been shown that thorium can be titrated in the presence of large amounts of other metals. Following electrolysis at a mercury pool electrode the titration is selective for thorium.
Freese
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Laboratorium voor Analytische Scheikunde der Universiteit van Amsterdam Nieuwe Achtergracht 125, Amsterdam-CNetherlands.
Oostervink
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Den Boef
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