Separation of [sup 90]Y from [sup 90]Sr by solvent extraction with ionizable crown ethers

Journal Article · Sat May 15 04:00:00 EDT 1993 · Analytical Chemistry (Washington); (United States)

DOI:https://doi.org/10.1021/ac00058a009· OSTI ID:6072269

Wood, D J; Elshani, S; Du, H S; Natale, N R; Wai, C M ^[1]

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1. Univ. of Idaho, Moscow (United States)

sym-Dibenzo-16-crown-5-oxyacetic acid and its analogues are selective for the extraction of Y[sup 3+] over Sr[sup 2+] 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 Y[sup 3+] over Sr[sup 2+] is significantly increased. Using these ionizable crown ethers as extractants, [sup 90]Y fractions of greater than 99.9% purity can be obtained in a single solvent extraction step from solutions of [sup 90]Sr. 11 refs., 5 figs., 2 tabs.

• OSTI ID: 6072269
• Journal Information: Analytical Chemistry (Washington); (United States), Journal Name: Analytical Chemistry (Washington); (United States) Vol. 65:10; ISSN 0003-2700; ISSN ANCHAM
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400100 -- Analytical & Separations Chemistry
400703* -- Radiochemistry & Nuclear Chemistry-- Radioisotope Production
ALCOHOLS
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COMPLEXES
DAYS LIVING RADIOISOTOPES
EVEN-EVEN NUCLEI
EXTRACTION
GLYCOLS
HOURS LIVING RADIOISOTOPES
HYDROXY COMPOUNDS
INTERMEDIATE MASS NUCLEI
IONIZATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEDICINE
NUCLEAR MEDICINE
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENE GLYCOLS
POLYMERS
RADIOISOTOPES
RARE EARTH COMPOUNDS
SEPARATION PROCESSES
SOLVENT EXTRACTION
STRONTIUM 90
STRONTIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
YTTRIUM 90
YTTRIUM ISOTOPES