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

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

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. 2011 An automated microfluidic colourimetric sensor applied in situ to determine nitrite concentration. Sensors and Actuators B Chemical, 156 (2). 1009-1014. 10.1016/j.snb.2011.02.042

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Abstract

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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Programmes:

UNSPECIFIED

Digital Object Identifier (DOI):

10.1016/j.snb.2011.02.042

ISSN:

09254005

Additional Keywords:

Griess nitrite detection; Automated PMMA microfluidic chip; Integrated colourimetric sensor; Spectrophotometry; Environment

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