Separation of strontium from large amounts of calcium, with application to radiostrontium analysis.
The elution first of calcium and then of strontium by complex formation with cyclohexanediaminetetra-acetic acid (CyDTA) after sorption on ion-exchange columns, is shown to require careful control of pH and the concentrations of CyDTA and NH(4)(+). A procedure is described for volumetric analysis of calcium and strontium, and for use of this separation procedure before determination of (90)Sr in sea-water. Careful choice of reagents and materials is shown to be necessary for use of such a method in determination of trace amounts of radiostrontium.
Noshkin
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Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, U.S.A.
Mott
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