Articles | Volume 15, issue 13
https://doi.org/10.5194/bg-15-4291-2018
https://doi.org/10.5194/bg-15-4291-2018
Technical note
 | 
16 Jul 2018
Technical note |  | 16 Jul 2018

Technical note: Continuous fluorescence-based monitoring of seawater pH in situ

John W. Runcie, Christian Krause, Sergio A. Torres Gabarda, and Maria Byrne

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Latest update: 18 Apr 2024
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Short summary
pH in coastal waters can be highly variable. A means to measure this variation is needed. A fully autonomous submersible fluorescence-based pH monitoring device incorporating additional sensors for temperature and salinity was deployed in or adjacent to a shallow estuary for week-long intervals. Results and calculated aragonite/calcite saturation values are presented. The device is well suited to continuous flow-through or stand-alone measurements with a precision of at least 0.007 pH units.
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