Use of Chelex-100 for selectively removing Y-90 from its parent

Details Use of Chelex-100 for selectively removing Y-90 from its parent Use of Chelex-100 for selectively removing Y-90 from its parent

1993-10-04

1996-02-27

Walsh, Donald P.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

C01F 1300, C01F 1500

Patent

active

054946476

ABSTRACT:
A method for selectively removing yttrium-90 from its parent strontium-90 contained in an environmental sample includes loading the sample onto a column containing a chelating ion-exchange resin capable of retaining yttrium-90; washing the column with a solution capable of removing strontium, calcium, and other contaminants from the yttrium-90 fraction retained on the column; removing excess acetate salts from the column; eluting yttrium-90 solution from the column and adjusting the pH of this solution to about 2.7; filtering the yttrium-90 solution and weighing this solution for gravimetric yield; and, counting the yttrium-90 containing solution with a radiological counter for a time sufficient to achieve the statistical accuracy desired. It is preferred that the chelating ion-exchange resin is a bidente ligand having the chemical name iminodiacetic acid mounted on a divinyl benzene substrate, converted from sodium form to ammonia form.

REFERENCES:
patent: 4202743 (1980-05-01), Oda et al.
patent: 4423159 (1983-12-01), Ebra et al.
patent: 5310486 (1994-05-01), Green et al.
Ion Exchange Tests for Removing .sup.90 Sr and Pu from Stored Waste Supernates, Savannah River Laboratory Quarterly Report, Waste Management, Apr.-Jun. 1975, pp. 24-25.
An Evaluation of Column Methods for the Separation of Sr-90/Y-90 in Environmental Waste Streams, Mark W. Huntley, viewgraphs of presentation made to U.S. Department of Energy Conference on Analytical Chemistry, Oct. 6, 1993.
Zhongqian et al., "Separation of Strontium-90 and Yttrium-90 on P507 Resin," Yuanzineng Kexue Jishu (1991), 25(4), 89-91.
Haggin, "New Process Makes High Purity Yttrium-90", Chemical & Engineering News, Aug. 20, 1990, p. 8.

Affiliated with

Also associated with

Rating

Use of Chelex-100 for selectively removing Y-90 from its parent does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of Chelex-100 for selectively removing Y-90 from its parent , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of Chelex-100 for selectively removing Y-90 from its parent will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1676880