Fast Potentiometric CO2 Sensor for High-Resolution In Situ Measurements in Fresh Water Systems
| Autor: | Eric Bakker, Christian Dinkel, Bernhard Wehrli, Andreas Brand, Nadezda Pankratova, Rohini Athavale |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
In situ
Materials science 010401 analytical chemistry Potentiometric titration Analytical chemistry Response time General Chemistry 010501 environmental sciences 01 natural sciences Anoxic waters 0104 chemical sciences Ion Carbon dioxide sensor ddc:540 Environmental Chemistry Potentiometric sensor Image resolution 0105 earth and related environmental sciences |
| Zdroj: | Environmental Science & Technology, Vol. 52, No 19 (2018) pp. 11259-11266 |
| ISSN: | 0013-936X |
| Popis: | We present a new potentiometric sensor principle and a calibration protocol for in situ profiling of dissolved CO₂ with high temporal and spatial resolution in fresh water lakes. The sensor system is based on the measurement of EMF between two solid-contact ion selective electrodes (SC-ISEs), a hydrogen ion selective and a carbonate selective sensor. Since it relies on SC-ISEs, it is insensitive to changes in pressure, thus suitable for in situ studies. Also, as it offers a response time (t95%) of |
| Databáze: | OpenAIRE |
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