Karaburan

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Project Karaburan
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Monitoring water quality
Status Initializing
Contact bertrik
Last Update 2024-04-08

Introduction

Topics:

  • air quality sensors
    • ammonia
    • NOx
  • water chemical analysis
    • nitrates
    • ammonia
    • dissolved oxygen
    • sulfide/sulfate
    • phosphates?
    • salinity (chlorides?)
  • water physical analysis
    • temperature
    • clarity/turbidity -> investigate standard ways of measuring/expressing this
    • conductivity/total dissolved solids
    • water properties by light reflection, hyperspectral/polarity
  • boat control
    • trajectory -> steering
  • camera control
  • post-processing
    • data presentation
      • video/photo stitching
      • time lapse view
      • map view of properties
  • use cases
    • verify with domain experts, how to engage?
    • slootview, under/above water
    • minimum viable prototype
    • high-res measurement by location, by time
  • materials
    • boat selection
    • processing platform selection
    • communication platform selection

Air quality sensors

Nitrogen compounds in air

According to https://www.rivm.nl/stikstof/monitoren-advies-onderzoek/overzicht-stikstofmetingen/metingen-stikstof-in-de-lucht average (typical?) values of

  • Ammonia (NH3): 6.7 ug/m3 (9.6 ppb)
  • NOx: 27.3 ug/m3
  • NO2: 18.6 ug/m3 (9.9 ppb)

(ppb-conversion using https://www.breeze-technologies.de/blog/air-pollution-how-to-convert-between-mgm3-%C2%B5gm3-ppm-ppb/ )

RIVM report on inexpensive nitrogen-in-air sensors: https://www.samenmeten.nl/sensoren-voor-no2 Conclusion: most sensors are not sensitive enough to be used in typical outdoor conditions, with perhaps one exception: alphasense NO2-B43F

Use cases

Reeuwijkse plassen:

goals:

  • slootview, inspect water sides over time
  • underwater camera: detect invasive cray fish
  • sample water at high spatial resolution
  • detect indicators for Cyanobacteria: temperature and nutrients