Separation of uranium and plutonium isotopes for measurement by multi collector inductively coupled plasma mass spectroscopy

被引:12
|
作者
Martinelli, R. E. [1 ]
Hamilton, T. F. [1 ]
Williams, R. W. [2 ]
Kehl, S. R. [1 ]
机构
[1] Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94551 USA
[2] Lawrence Livermore Natl Lab, Div Chem Sci, Livermore, CA 94551 USA
关键词
Isotopes; Uranium; Plutonium; Soil; Environmental; Marshall islands; Multi collector inductively coupled plasma mass spectroscopy; Ion exchange; Column chromatography; Radiochemistry;
D O I
10.1007/s10967-009-0150-3
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Uranium (U) and plutonium (Pu) isotopes in coral soils, contaminated by nuclear weapons testing in the northern Marshall Islands, were isolated by ion-exchange chromatography and analyzed by mass spectrometry. The soil samples were spiked with U-233 and Pu-242 tracers, dissolved in minerals acids, and U and Pu isotopes isolated and purified on commercially available ion-exchange columns. The ion-exchange technique employed a TEVA(A (R)) column coupled to a UTEVA(A (R)) column. U and Pu isotope fractions were then further isolated using separate elution schemes, and the purified fractions containing U and Pu isotopes analyzed sequentially using multi-collector inductively coupled plasma mass spectrometer (MCICP-MS). High precision measurements of U-234/U-235, U-238/U-235, U-236/U-235, and Pu-240/Pu-239 in soil samples were attained using the described methodology and instrumentation, and provide a basis for conducting more detailed assessments of the behavior and transfer of uranium and plutonium in the environment.
引用
收藏
页码:343 / 347
页数:5
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