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Updated: Jun 28, 2026

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides
Published on: May 20, 2019
Determination of thorium and scandium by indirect chronopotentiometric stripping analysis
1Analytical Laboratory, Institute of Geological Sciences, Charles University, Albertov 6, Prague 2, Czechoslovakia.
Abstract:
A highly sensitive chronopotentiometric determination of thorium or of scandium is described. It is based on the substitution of thorium or scandium for lead (or zinc) in the lead-EDTA complex, and measurement of the liberated lead by deposition on a mercury film electrode, followed by a chemical oxidation stripping process during which the potential of the mercury electrode is monitored. Thorium has been determined at concentrations in the range 10(-5)-10(-7)M by use of deposition times from 1 min to 1 hr.
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