Fractionation corrections for mixed-isotope spikes of Sr, K, and Pb
Fractionation corrections for mixed-isotope spikes of Sr, K, and Pb
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DOI：
10.1016/0012-821x(71)90087-2
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发表时间：
1971-03
影响因子：
5.3
通讯作者：
A. Hofmann
中科院分区：
文献类型：
--
作者：
A. Hofmann
本文给出了在测定混合同位素峰的同位素组成时校正同位素分馏的方法。最简单的方法，适用于锶，利用的事实，分馏，测量的同位素比率的一个关键的三同位素混合物正好在一个连接线，连接的真正组成的尖峰和正常的元素。没有临界混合物的三同位素元素需要独立测定加标物与正常元素的重量比。给出了四同位素问题的一个新的解析解和一个简单的图解。
Methods are given to correct for isotopic fractionation in the determination of the isotopic composition of mixed-isotope spikes. The simplest method, applicable to Sr, utilizes the fact that the fractionated, measured isotope ratios of a critical three-isotope mixture lie exactly on a tie line that connects the true compositions of spike and normal element. Three-isotope elements that do not have critical mixtures require independent determination of the weight ratio of spike to normal element. A new analytic solution together with a straightforward graphical representation is given to the four-isotope problem.