D. W. Golightly
A. F. Dorrzapf Jr.
J. W. Morgan
1991
<div id="preview-section-abstract"><div id="abstracts" class="Abstracts u-font-serif"><div id="aep-abstract-id5" class="abstract author"><div id="aep-abstract-sec-id6"><div class="u-margin-s-bottom">Effective methods are described for the chemical separation of rhenium, osmium and molybdenum. The methods are based on distillation and anion-exchange chromatography, and have been the basis for rhenium—osmium isotope studies of ore deposits and meteorites. Successful anion-exchange separation of osmium requires both recognition and careful control of the osmium species in solution; thus, distillation of osmium tetroxide from a mixture of sulfuric acid and hydrogen peroxide is preferred to anion-exchange. Distribution coefficients measured for perrhenate in sulfuric acid media are sufficiently high (<i>K</i><sub>d</sub><span> </span>> 500) for rhenium to be directly loaded onto an ion-exchange column from a distillation residue and subsequently eluted with nitric acid. Polymerization of molybdenum species during elution is prevented by use of a solution that is 1<i>M</i><span> </span>in hydrochloric acid and 1<i>M</i><span> </span>in sodium chloride.</div></div></div></div></div>
application/pdf
10.1016/0039-9140(91)80045-2
en
Elsevier
Methods for the separation of rhenium, osmium and molybdenum applicable to isotope geochemistry
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