PRECISE MEASUREMENT OF CHLORINE ISOTOPES BASED ON CS2CL+ BY THERMAL IONIZATION MASS-SPECTROMETRY

被引：40
|
作者：
XIAO, YK
ZHOU, YM
LIU, WG
机构：
[1] Qinghai Institute of Salt Lakes, Academia Sinica, People's Republic of China
来源：
ANALYTICAL LETTERS | 1995年 / 28卷 / 07期
关键词：
CHLORINE; ISOTOPIC MEASUREMENT; ATOMIC WEIGHT;
D O I：
10.1080/00032719508000346
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An improved procedure for precise measurement of chlorine isotope ratios in geological samples based on Cs2Cl+ ion by thermal ionization mass spectrometry is reported. Using this procedure the Cl-37/Cl-35 ratio of NIST SRM 975 is determined to be 0.318929 +/- 0.000028(1 sigma) with a precision of 0.009%(1 sigma). The procedure has been successfully applied to study the variation of chlorine isotopic compositions in seawater and to determine atomic weight of chlorine.
引用
收藏
页码：1295 / 1304
页数：10
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