A STUDY OF THE CARBONATE COMPLEXATION OF CM-III AND EU-III BY TIME-RESOLVED LASER FLUORESCENCE SPECTROSCOPY

被引：49
|
作者：
KIM, JI [1 ]
KLENZE, R [1 ]
WIMMER, H [1 ]
RUNDE, W [1 ]
HAUSER, W [1 ]
机构：
[1] TECH UNIV MUNICH,INST RADIOCHEM,D-85747 GARCHING,GERMANY
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 213卷
关键词：
D O I：
10.1016/0925-8388(94)90925-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Carbonate complexation of Cm-III and Eu-III is studied by time-resolved laser-induced fluorescence spectroscopy (TRLFS). The carbonate species M(CO3)(+), M(CO3)(2)(-) and M(CO3)(3)(3-) (M=Cm-III and Eu-III) are characterized by measuring excitation and emission spectra, and lifetime. Stability constants for the first carbonate complex in 0.1 M NaClO4, are found to be log beta(11) = 6.65+/-0.07 for Cm(CO3)(+) and log beta(11) = 6.57+/-0.08 for Eu(CO3)(+). The constant for Cm-III compares well with the values for Am-III derived spectroscopically and by solubility measurement. No difference is found for the stability constant of Eu(CO3)(+) in the excited state as determined by TRLFS and in the ground state as determined by solubility measurement.
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页码：333 / 340
页数：8
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