Lithium isotope effects in water-dimethyl sulphoxide mixed-solvent ion-exchange chromatography

1992 ◽  
Vol 627 (1-2) ◽  
pp. 187-191 ◽  
Author(s):  
Takao Oi ◽  
Takuji Imai ◽  
Hidetake Kakihana
Keyword(s):  
Ion Exchange ◽  
Mixed Solvent ◽  
Isotope Effects ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Dimethyl Sulphoxide ◽  
Lithium Isotope

Temperature Dependence of Lithium Isotope Effects in Ion Exchange Electromigration

1987 ◽  
Vol 42 (7) ◽  
pp. 709-712
Author(s):  
Yasuhiko Fujii ◽  
Morikazu Hosoe ◽  
Okamoto Makoto
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Isotope Effects ◽  
Isotope Separation ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Separation Coefficient ◽  
Lithium Isotope ◽  
Increasing Temperature ◽  
Exchange Membrane

The isotope separation coefficient of lithium electromigration through a cation exchange membrane is determined at 6, 11, 20 and 40 °C . It is found that this coefficient increases with temperature while the slope of the isotope distribution in the band decreases with increasing temperature. These tendencies are opposite to those usually observed in ion exchange chromatography.

scholarly journals Isotope Effects of Copper in Cu(II) Ligand-Exchange Systems by Ion Exchange Chromatography.

2002 ◽  
Vol 13 (2) ◽  
pp. 40-45 ◽  
Author(s):  
Ibrahim. M. ISMAIL ◽  
MD. Abdul MATIN ◽  
Masao NOMURA ◽  
Shahinur BEGUM ◽  
Masao AIDA ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Ligand Exchange ◽  
Isotope Effects ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography

Engineering study on lithium isotope separation by ion exchange chromatography

2021 ◽  
Vol 168 ◽  
pp. 112478
Author(s):  
Tatsuya Suzuki ◽  
Minghui Zhang ◽  
Masao Nomura ◽  
Takehiko Tsukahara ◽  
Masahiro Tanaka
Keyword(s):  
Ion Exchange ◽  
Isotope Separation ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Lithium Isotope ◽  
Engineering Study

Anomaly of155Gd and157Gd Isotope Effects in Ligand Exchange Reactions Observed by Ion Exchange Chromatography

2000 ◽  
Vol 72 (13) ◽  
pp. 2841-2845 ◽  
Author(s):  
Ibrahim M. Ismail ◽  
Akira Fukami ◽  
Masao Nomura ◽  
Yasuhiko Fujii
Keyword(s):  
Ion Exchange ◽  
Ligand Exchange ◽  
Isotope Effects ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Exchange Reactions

THE PARTIAL SEPARATION OF Na22 FROM Na24 BY ION EXCHANGE CHROMATOGRAPHY

1956 ◽  
Vol 34 (1) ◽  
pp. 65-74 ◽  
Author(s):  
R. H. Betts ◽  
W. E. Harris ◽  
Margaret D. Stevenson
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Cation Exchange ◽  
Exchange Resin ◽  
Isotope Effects ◽  
Cation Exchange Resin ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Partial Separation ◽  
Chloride Salts

Mixtures of the radionuclides Na22 and Na24, as the chloride salts, have been partially separated by chromatographic methods. A column 102 cm. in length containing the cation exchange resin Dowex 50 was used. The eluant was 0.7 M hydrochloric acid. Na22 is held more strongly by the resin than is Na24. The most effective separations were obtained at 25 °C and 5.5 °C.; experiments at 48 °C and 68 °C showed much smaller isotope effects.

A GENERAL SYNTHESIS OF NUCLEOSIDES-5′ TRIPHOSPHATES

1964 ◽  
Vol 42 (3) ◽  
pp. 599-604 ◽  
Author(s):  
J. G. Moffatt
Keyword(s):  
Ion Exchange ◽  
Molecular Sieve ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Dimethyl Sulphoxide ◽  
Sodium Salts ◽  
Work Up ◽  
General Synthesis

The reaction between ribo- and deoxyribo-nucleoside-5′ phosphoromorpholidates and tributylammonium pyrophosphate in molecular sieve dried dimethyl sulphoxide has been found to give the nucleoside-5′ triphosphates in 81–84% yields. A convenient work-up of the triphosphates following ion exchange chromatography permits isolation of the triphosphates in overall yields of 73–80% as the pure sodium salts. A number of examples of the reaction are given.

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