High-precision measurements of 17O/16O and 18O/16O of O2 and O2/Ar ratio in air

被引：110

作者：

Barkan, E ^{[1
]}

Luz, B ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 2003年 / 17卷 / 24期

关键词：

D O I：

10.1002/rcm.1267

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A method for high-precision and high-accuracy mass spectometric measurements of the ratios among the three oxygen isotopes, and of the O-2/Ar ratio, is presented. It involves separation of the O-2-Ar mixture from air and includes a fully automated system that ensures highly reliable sample processing. Repeated measurements of atmospheric oxygen yield the repeatability (+/-SE x t, standard error of the mean (n = 12) multiplied by Student's t-factor for a 95% confidence limit) of 0.004, 0.003 and 0.2parts per thousand for delta(18)O, delta(17)O and deltaO(2)/Ar, respectively. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：2809 / 2814

页数：6

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