| 锶稀释剂同位素比值质量分馏效应的校正方法初探 |
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| 引用本文： | 王晓明,崔建勇,刘宇昂,裴玲云.锶稀释剂同位素比值质量分馏效应的校正方法初探[J].国外铀金地质,2014(1):48-52. |
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| 作者姓名： | 王晓明 崔建勇 刘宇昂 裴玲云 |
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| 作者单位： | 核工业北京地质研究院,北京100029 |
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| 摘 要： | 以稀释法锶同位素比值测定和计算方法为例,分析了稀释剂同位素比值对稀释法锶同位素比值测定的影响.对于样品-稀释剂混合样,随着稀释剂加入量的增加,稀释剂同位素比值准确度对样品同位素比值的影响逐渐增加,样品同位素比值计算结果出现严重偏离.稀释剂同位素比值测量准确度受测量过程中质量分馏效应影响,通过数学迭代法对锶稀释剂同位素的质量分馏效应进行校正,提高了稀释法同位素比值计算结果的准确度.
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| 关 键 词： | 锶稀释剂 质量分馏 校正 |
Discussion of correction method for mass fractionation effect of strontium spike isotopic ratios |
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| Authors: | WANG Xiao-ming CUI Jian-yong LIU Yu-ang PEI Ling-yun |
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| Institution: | (Beijing Research Institute of Uranium Geology, Beijing 100029, China) |
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| Abstract: | By example, the taking the determination and calculation influence of spike isotopic ratios on the method of spiked strontium isotopic ratios as an determination of spiked strontium isotopic ratios has been analyzed. For sample-spike mixture, the influencing degree by accuracy of the isotopic ratios of strontium spike on the result of sample strontium isotopic ratio is getting much bigger with the increasing amount of strontium spike. The accuracy of spike isotopic ratios will be influenced by the mass fractionation effect in the determination process. In this study, the mass fractionation effect of strontium spike is corrected by mathematical iterative method. As a result, the accuracy of sample strontium isotopic ratios has been improved. |
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| Keywords: | strontium spike mass fractionation correction |
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