EGU2020-6737, updated on 12 Jun 2020
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

CRDS-based dissolved N₂O & CH₄ measurement system

Il-Nam Kim1, Seong-Su Kim2, Ki-Tae Park3, and Jae-Hyun Lim4
Il-Nam Kim et al.
  • 1Department of Marine Science, Incheon National University, Incheon, South Korea (
  • 2Department of Marine Science, Incheon National University, Incheon, South Korea (
  • 3Korea Polar Research Institute, Incheon, South Korea (
  • 4Fisheries Resources and Environmental Research Division, East Sea Fisheries Research Institute, South Korea (

 Gas chromatography (GC) is the most commonly used analytical equipment for tracer gas measurements. However, high performance equipment such as cavity ring-down spectrometer (CRDS) has been developed and currently become commercially available (G2308, PICARRO). CRDS is optical spectrometer to measure tracer gas, and its principal is that determines the gas concentration through the rate of decay of the optical signal. The great advantage of using CRDS is that not required too many material, time, and easy to handle than GC system. In general, CRDS is used for continuous measurement, which requires a large amount of gas for quantification. So, we have modified CRDS system to measure small amount of N2O/CH4 gases which is extracted from seawater samples using headspace method, and in turn have tested in various marine environments from coastal regions to open oceans. As a result, we have obtained highly accurate concentrations of dissolved N2O & CH4 gases, suggesting that the system would be useful to study dynamics of climate-relevant trace gases.

How to cite: Kim, I.-N., Kim, S.-S., Park, K.-T., and Lim, J.-H.: CRDS-based dissolved N₂O & CH₄ measurement system, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-6737,, 2020

This abstract will not be presented.