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Characterisation and deployment of an immobilised pH sensor spot towards surface ocean pH measurements |
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| Authors: | Jennifer S Clarke Eric P Achterberg Victoire MC Rérolle Samer Abi Kaed Bey Cedric FA Floquet Matthew C Mowlem |
| Institution: | 1. Ocean and Earth Sciences, National Oceanography Centre Southampton, University of Southampton, Southampton, SO14 3ZH, UK;2. GEOMAR Helmholtz Centre for Ocean Research, 24148 Kiel, Germany;3. National Oceanography Centre Southampton, Southampton, SO14 3ZH, UK;4. Sorbonne Universités (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, LOCEAN Laboratory, 4 place Jussieu, F-75005 Paris, France;5. American University of Science & Technology, Alfred Naccache Avenue, P.O. Box 16-6452, Beirut, Lebanon |
| Abstract: | The oceans are a major sink for anthropogenic atmospheric carbon dioxide, and the uptake causes changes to the marine carbonate system and has wide ranging effects on flora and fauna. It is crucial to develop analytical systems that allow us to follow the increase in oceanic pCO2 and corresponding reduction in pH. Miniaturised sensor systems using immobilised fluorescence indicator spots are attractive for this purpose because of their simple design and low power requirements. The technology is increasingly used for oceanic dissolved oxygen measurements. |
| Keywords: | Seawater pH sensor Fluorescence Optode Ocean acidification |
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