Compositions – Organic luminescent material containing compositions – Scintillating or lasing compositions
Patent
1979-09-13
1981-02-03
Sever, Frank
Compositions
Organic luminescent material containing compositions
Scintillating or lasing compositions
423 2, 423423, 423429, 424 1, C09K 300, C09K 1104
Patent
active
042487307
ABSTRACT:
Micro concentrations of .sup.68 Ga in secular equilibrium with .sup.68 Ge in strong aqueous HCl solution may readily be separated in ionic form from the .sup.68 Ge for biomedical use by evaporating the solution to dryness and then leaching the .sup.68 Ga from the container walls with dilute aqueous solutions of HCl or NaCl. The chloro-germanide produced during the evaporation may be quantitatively recovered to be used again as a source of .sup.68 Ga. If the solution is distilled to remove any oxidizing agents which may be present as impurities, the separation factor may easily exceed 10.sup.5. The separation is easily completed and the .sup.68 Ga made available in ionic form in 30 minutes or less.
REFERENCES:
Chem. Abs., vol. 81, 1974, Art. No. 180245n.
K. V. Malyshev et al., Soviet Radio Chemistry, vol. 12, pp. 137-139, 1975.
71-Nuclear Technology, vol. 86, 1977, Art. No. 86:129603d.
G. J. Ehrhardt et al., Jrnl. of Nuclear Medicine, vol. 19, pp. 925-929,09 Feb. 9, 1979.
Grant Patrick M.
Mirzadeh Saed
O'Brien, Jr. Harold A.
Whipple Richard E.
Denny James E.
Gaetjens Paul D.
Sever Frank
The United States of America as represented by the United States
Walterscheid Edward C.
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