同位素分析的计算方法  

A Method of Calculation about Analysis of Isotope

作　　者：范国梁[1] 周维义[1] 魏晓兵[1] 姜东峰[1] 

机构地区：[1]天津大学材料学院,天津300072

出　　处：《分析测试学报》2004年第z1期140-141,143,共3页Journal of Instrumental Analysis

摘　　要：　　在许多没有高分辩质谱的条件下,通过同位素分析可以迅速确认化合物或碎片离子的元素组成.化合物或碎片离子元素组成的确定,对解析它们的结构具有重要意义.为了能够通过同位素分析准确获得元素的组成,必须要求同位素丰度的测量准确.……Isotope analysis is important method for confirmation element component of compounds in low resolving mass spectrum. When using isotope analysis, the abundance of isotope must be correctly measured, and the mass charge rate(m/z) of isotope must be different from other fragments, namely the abundance of isotope only producing by itself. This condition is very difficult to come true actually, in most case the m/z of the other fragments is the same with isotope. In this article a method was proposed, which can solve the problem and give the correct result of element of compounds with the analysis and calculation a few different fragments and isotopes.

关 键 词：Mass Spectrum ISOTOPE CALCULATION 

分 类 号：O657-55[理学—分析化学]