Articles | Volume 24, issue 7
https://doi.org/10.5194/hess-24-3871-2020
https://doi.org/10.5194/hess-24-3871-2020
Technical note
 | 
30 Jul 2020
Technical note |  | 30 Jul 2020

A Fast-Response Automated Gas Equilibrator (FaRAGE) for continuous in situ measurement of CH4 and CO2 dissolved in water

Shangbin Xiao, Liu Liu, Wei Wang, Andreas Lorke, Jason Woodhouse, and Hans-Peter Grossart

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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (further review by editor) (17 Jun 2020) by Brian Berkowitz
AR by Liu Liu on behalf of the Authors (24 Jun 2020)
ED: Publish as is (04 Jul 2020) by Brian Berkowitz
AR by Liu Liu on behalf of the Authors (05 Jul 2020)
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Short summary
To better understand the fate of methane (CH4) and carbon dioxide (CO2) in freshwaters, dissolved CH4 and CO2 need to be measured with a high temporal resolution. We developed the Fast-Response Automated Gas Equilibrator (FaRAGE) for real-time in situ measurement of dissolved gases in water. FaRAGE can achieve a short response time (CH4: t95 % = 12 s; CO2: t95 % = 10 s) while retaining a high equilibration ratio and accuracy.