Effect of counter anion in isotope exchange reaction of strontium

被引：7

作者：

Shibahara, Y

Nishizawa, K

Yasaka, Y

Fujii, T

机构：

[1] Osaka Univ, Dept Nucl Engn, Grad Sch, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Res Ctr Environm Preservat, Suita, Osaka, Japan

[3] Kyoto Univ, Inst Res Reactor, Kumatori, Osaka 59004, Japan

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 2003年 / 21卷 / 03期

关键词：

strontium; isotope separation; isotope effect; field shift effect; counter anion;

D O I：

10.1081/SEI-120020221

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of counter anion in isotope exchange reaction of strontium was investigated by liquid chromatography using a cryptand (2B, 2, 2) polymer as a stationary phase. Isotope enrichment factors were assumed to be in the order: Perchlorate > chloride > nitrate > bromide. The maximum isotope enrichment factor of Sr-84 was (13.2 +/- 2.2) x 10(-3) and the minimum was (4.2 +/- 1.2) x 10(-3). No isotope enrichment factor showed a linear relation to the difference of atomic masses. The contribution of the field shift in atomic electrons was greater to the isotope enrichment factor than the vibrational frequency shift between an isotope and a ligand. Chloride as a counter anion to strontium was the largest isotope enrichment factor.

引用

页码：435 / 448

页数：14

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