Beaton, Alexander D., Sieben, Vincent J., Floquet, Cedric F.A., Waugh, Edward M., Abi Kaed Bey, Samer, Ogilvie, Iain R.G., Mowlem, Matthew C. and Morgan, Hywel
An automated microfluidic colourimetric sensor applied in situ to determine nitrite concentration
Sensors and Actuators B: Chemical, 156, (2), . (doi:10.1016/j.snb.2011.02.042).
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A stand-alone sensor system with integrated sub-systems is demonstrated. The system is portable and capable of in situ reagent-based nutrient analysis. The system is based on a low cost optical detection method, together with an automated microfluidic delivery system that is able to detect nitrite with a limit of detection (LOD) of 15 nM. The sensor was operated in situ at Southampton Dockhead for 57 h (December 2010) and 375 measurements were taken.
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