An automated microfluidic colourimetric sensor applied in situ to determine nitrite concentration

An automated microfluidic colourimetric sensor applied in situ to determine nitrite concentration

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 w...

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Veröffentlicht in:Sensors and actuators. B, Chemical Chemical, 2011-08, Vol.156 (2), p.1009-1014
Hauptverfasser: Beaton, Alexander D., Sieben, Vincent J., Floquet, Cedric F.A., Waugh, Edward M., Abi Kaed Bey, Samer, Ogilvie, Iain R.G., Mowlem, Matthew C., Morgan, Hywel
Format: Artikel
Sprache:eng
Schlagworte:
Actuators
Automated
Automated PMMA microfluidic chip
chemical concentration
detection limit
Environment
Griess nitrite detection
Integrated colourimetric sensor
Low cost
Microfluidics
Nitrites
Nutrients
Portability
Sensors
sensors (equipment)
Spectrophotometry
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Beschreibung
Zusammenfassung: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.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2011.02.042