The project in a nutshell:
The aim of this project is to test in real conditions a multi-elements submersible potentiometric probe, that has the ability to autonomously perform continuous monitoring for extended periods of time. In the proposed design, the potentiometric sensors are located in a small recess and are in direct contact with the sample allowing continuous monitoring without any additional power required. To reduce the influence of a number of uncontrollable factors such as temperature on the sensor signal, a one-step calibration protocol and a new reference element based on the principle of electrochemical symmetry have been implemented. Owing to low power consumption and drift correction method, this system can run maintenance-free for a couple of weeks. We are planning to monitor the long-term fluctuations of environmentally relevant species, such as nitrate, pH and carbonate.
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