A new continuous flow isotope ratio mass spectrometry system for the analysis of δ2H, δ17O and δ18O of small (120 μg) water samples in atmospheric applications

被引：13

作者：

Franz, P ^{[1
]}

Röckmann, T ^{[1
]}

机构：

[1] Max Planck Inst Nucl Sci, D-69117 Heidelberg, Germany

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 2004年 / 18卷 / 13期

关键词：

D O I：

10.1002/rcm.1499

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A new continuous-flow system for the analysis of the complete stable isotopic composition of water vapor has been developed. The sample size is reduced to only 120 mug (equivalent to120 nL of liquid substance) of water, yielding precisions of about 0.7, 1.3 and 7parts per thousand for delta(17)O, delta(18)O and delta(2)H, respectively. The total time for the analysis of a sample is about 150 min including purging times. Oxidized steel surfaces can be a source of memory effects which can be corrected for. The system is predestined for atmospheric applications in the tropopause region, as the sample can be directly introduced into the system from a cryogenic trap. Copyright (C) 2004 John Wiley Sons, Ltd.

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页码：1429 / 1435

页数：7

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