Development of a novel hybrid pH sensor for deployment on autonomous profiling platforms
IEEE Oceans conference proceeding "Development of a novel hybrid pH sensor for deployment on autonomous profiling platforms", Marseille (2019)
IEEE OCEANS CONFERENCE: "DEVELOPMENT OF A NOVEL HYBRID PH SENSOR FOR DEPLOYMENT ON AUTONOMOUS PROFILING PLATFORMS" (2019)
Fluidion presented at the IEEE Oceans 2019 conference in Marseille. The paper focuses on the latest results from the collaboration with the LOCEAN laboratory at the Sorbonne University, with a focus on the development of a new generation of ocean pH sensors for measuring acidification.
Novel pH sensor using potentiometric and colorimetric measurement techniques to measure ocean acidification
Key points:
- The methodology presented is based on a combination of fluorescent wastewater tracking, rapid microbiological measurements with ALERT technology, and automated sampling with Fluidion's aquatic drone to provide a rapid, accurate and affordable in-situ microbiological assessment of pollution sources on river ecosystems.
- Phase 1 of the study showed that there is considerable variability in E.coli concentrations in graywater discharged from houseboats. These can vary by a factor of 10⁵. Wastewater shows high concentrations with low variability (within a factor of 10).
- Phase 2 of the study demonstrated that the methodology employed allows for the rapid identification and accurate measurement of the impact of a discrete pollution event at multiple points in the river.
- In Phase 3, a total of 182 E.coli measurements were taken over the course of one month, with an average of 6 daily measurements. The data collected showed the positive impact of rainfall events on the increase in E.coli concentrations, and also that the concentrations measured upstream and downstream followed the same trends without significant deviation.
