System for δ13C–CO2 and xCO2 analysis of discrete gas samples by cavity ring-down spectroscopy

Dickinson, Dane; Bodé, Samuel; Boeckx, Pascal

doi:https://doi.org/10.5194/amt-10-4507-2017

Articles | Volume 10, issue 11

https://doi.org/10.5194/amt-10-4507-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-10-4507-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 10, issue 11

Research article

|

22 Nov 2017

Research article |

| 22 Nov 2017

System for δ¹³C–CO₂ and xCO₂ analysis of discrete gas samples by cavity ring-down spectroscopy

Dane Dickinson, Samuel Bodé, and Pascal Boeckx

Supplement

https://doi.org/10.5194/amt-10-4507-2017-supplement

Video supplement

Measuring discrete gas samples on an isotopic laser-absorbtion gas analyser D. Dickinson, S. Bodé, P. Boeckx https://doi.org/10.5446/32922

Short summary

Cavity ring-down spectroscopy (CRDS) is an increasingly popular technology for isotope analysis of trace gases. However, most commercial CRDS instruments are designed for continuous gas sampling and cannot reliably measure small discrete samples. We present a novel technical adaptation that allows routine analysis of 50 mL syringed samples on an isotopic-CO₂ CRDS unit. Our method offers excellent accuracy and precision, fast sample throughput, and is easily implemented in other CRDS instruments.