Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 8, issue 12
Articles | Volume 8, issue 12
https://doi.org/10.5194/amt-8-5315-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-8-5315-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 8, issue 12
Research article
 | 
21 Dec 2015
Research article |  | 21 Dec 2015

An analytical system for stable isotope analysis on carbon monoxide using continuous-flow isotope-ratio mass spectrometry

S. L. Pathirana, C. van der Veen, M. E. Popa, and T. Röckmann

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Short summary
CO is established as an important indirect greenhouse gas, as it is the major sink for the OH∙. We have developed a fully automated system for the determination of δ13C and δ18O in atmospheric CO. The blank signal of the Schütze reagent is 1-3 % of the typical sample size. The repeatability is 0.1 ‰ for δ13C and 0.2 ‰ for δ18O. The analytical repeatability for the mole fraction is ~0.7 nmol mol-1 for 100 mL of ambient air (185.4 nmol mol-1 of CO). A single measurement is performed in 18 min.
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