Comparison of water isotope ratio determinations using two cavity ringdown instruments and classical mass spectrometry in continuous ice‐core analysis


Contact
Diedrich.Fritzsche [ at ] awi.de

Abstract

We present a detailed comparison between subsequent versions of commercially available wavelength-scanned cavity ring-down water isotope analysers (L2120-i and L2130-i, Picarro Inc.). The analysers are used in parallel in a continuous mode by adaption of a low-volume flash evaporation module. Application of the analysers to ice-core analysis is assessed by comparison between continuous water isotope measurements of a glacial ice-core from Severnaya Zemlya with discrete isotope-ratio mass spectrometry measurements performed on parallel samples from the same ice-core. The great advances between instrument versions, particularly in the measurement of δ2H, allow the continuous technique to achieve the same high level of accuracy and precision obtained using traditional isotope spectrometry techniques in a fraction of the experiment time. However, when applied to continuous ice-core measurements, increased integration times result in a compromise of the achievable depth resolution of the ice-core records.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
ISI/Scopus peer-reviewed
Publication Status
Published
Eprint ID
31703
DOI 10.1080/10256016.2013.781598

Cite as
Maselli, O. , Fritzsche, D. , Layman, L. , McConnell, J. and Meyer, H. (2013): Comparison of water isotope ratio determinations using two cavity ringdown instruments and classical mass spectrometry in continuous ice‐core analysis , Isotopes in Environmental & Health Studies, 49 (3), pp. 387-398 . doi: 10.1080/10256016.2013.781598


Share


Citation

Research Platforms
N/A

Campaigns


Actions
Edit Item Edit Item