Laboratory tests

Laboratory tests were carried out at the research station Solbergstrand (NIVA), in order to:

  • Gain experience with chemical sensors preparing for the nearshore controlled release experiments
  • Evaluate stability, drift, and accuracy of the sensors under controlled conditions
  • Study sensor response times (t60 and t90), which is highly relevant if the sensor is to be mounted on a moving platform such as an autonomous underwater vehicle (AUV).
  • Consider the different sensor’s suitability for marine CCS monitoring.

During the laboratory tests, local seawater was manipulated to mimic natural conditions with cyclic variations in the CO2 concentration. In addition to these “background” variations, leak scenarios were simulated by randomly injecting seawater with high CO2 concentrations. Sensors were placed in a specially designed flow-cell through which the water was circulated.

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