Abstract
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 δ17O, δ18O and δ2H, 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.
Original language | English |
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Pages (from-to) | 1429-1435 |
Number of pages | 7 |
Journal | Rapid Communications in Mass Spectrometry |
Volume | 18 |
Issue number | 13 |
DOIs | |
Publication status | Published - 16 Jul 2004 |