Separation of 90Y from 90Sr by Solvent Extraction with Ionizable Crown Ethers

Donald J. Wood; S. Elshani; H. S. Du; N. R. Natale; C. M. Wai

doi:10.1021/ac00058a009

Separation of ⁹⁰Y from ⁹⁰Sr by Solvent Extraction with Ionizable Crown Ethers

Donald J. Wood, S. Elshani, H. S. Du, N. R. Natale, C. M. Wai

University of Idaho

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

sym-Dibenzo-16-crown-5-oxyacetic acid and its analogues are selective for the extraction of Y³⁺ over Sr²⁺ from aqueous solutions into chloroform. The selectivity and the pH range of extraction are influenced by the structure of the ligand. The size of the macrocyclic cavity, the tether length of the lariat, the attachment of alkyl functional groups to the lariat, and the identity of the ionizable group can affect selectivity and extraction efficiency. When the carboxylic acid at the terminal end of the lariat is replaced by a hydroxamic acid, the selectivity for Y³⁺ over Sr²⁺ is significantly increased. Using these ionizable crown ethers as extractants, ⁹⁰Y fractions of greater than 99.9% purity can be obtained in a single solvent extraction step from solutions of ⁹⁰Sr.

Original language	English
Pages (from-to)	1350-1354
Number of pages	5
Journal	Analytical Chemistry
Volume	65
Issue number	10
DOIs	https://doi.org/10.1021/ac00058a009
State	Published - May 1 1993

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title = "Separation of 90Y from 90Sr by Solvent Extraction with Ionizable Crown Ethers",

abstract = "sym-Dibenzo-16-crown-5-oxyacetic acid and its analogues are selective for the extraction of Y3+ over Sr2+ from aqueous solutions into chloroform. The selectivity and the pH range of extraction are influenced by the structure of the ligand. The size of the macrocyclic cavity, the tether length of the lariat, the attachment of alkyl functional groups to the lariat, and the identity of the ionizable group can affect selectivity and extraction efficiency. When the carboxylic acid at the terminal end of the lariat is replaced by a hydroxamic acid, the selectivity for Y3+ over Sr2+ is significantly increased. Using these ionizable crown ethers as extractants, 90Y fractions of greater than 99.9% purity can be obtained in a single solvent extraction step from solutions of 90Sr.",

author = "Wood, {Donald J.} and S. Elshani and Du, {H. S.} and Natale, {N. R.} and Wai, {C. M.}",

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T1 - Separation of 90Y from 90Sr by Solvent Extraction with Ionizable Crown Ethers

AU - Wood, Donald J.

AU - Elshani, S.

AU - Du, H. S.

AU - Natale, N. R.

AU - Wai, C. M.

PY - 1993/5/1

Y1 - 1993/5/1

N2 - sym-Dibenzo-16-crown-5-oxyacetic acid and its analogues are selective for the extraction of Y3+ over Sr2+ from aqueous solutions into chloroform. The selectivity and the pH range of extraction are influenced by the structure of the ligand. The size of the macrocyclic cavity, the tether length of the lariat, the attachment of alkyl functional groups to the lariat, and the identity of the ionizable group can affect selectivity and extraction efficiency. When the carboxylic acid at the terminal end of the lariat is replaced by a hydroxamic acid, the selectivity for Y3+ over Sr2+ is significantly increased. Using these ionizable crown ethers as extractants, 90Y fractions of greater than 99.9% purity can be obtained in a single solvent extraction step from solutions of 90Sr.

AB - sym-Dibenzo-16-crown-5-oxyacetic acid and its analogues are selective for the extraction of Y3+ over Sr2+ from aqueous solutions into chloroform. The selectivity and the pH range of extraction are influenced by the structure of the ligand. The size of the macrocyclic cavity, the tether length of the lariat, the attachment of alkyl functional groups to the lariat, and the identity of the ionizable group can affect selectivity and extraction efficiency. When the carboxylic acid at the terminal end of the lariat is replaced by a hydroxamic acid, the selectivity for Y3+ over Sr2+ is significantly increased. Using these ionizable crown ethers as extractants, 90Y fractions of greater than 99.9% purity can be obtained in a single solvent extraction step from solutions of 90Sr.

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Separation of ⁹⁰Y from ⁹⁰Sr by Solvent Extraction with Ionizable Crown Ethers

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