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A new continuous flow isotope ratio mass spectrometry system for the analysis of δ 2 H, δ 17 O and δ 18 O of small (120 μg) water samples in atmospheric applications
Author(s) -
Franz Peter,
Röckmann Thomas
Publication year - 2004
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1499
Subject(s) - chemistry , analytical chemistry (journal) , mass spectrometry , continuous flow , isotope , isotope analysis , stable isotope ratio , chromatography , radiochemistry , nuclear physics , ecology , biology , physics , mechanics
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 μg (≡120 nL of liquid substance) of water, yielding precisions of about 0.7, 1.3 and 7‰ for δ 17 O, δ 18 O and δ 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 © 2004 John Wiley & Sons, Ltd.