Author/Authors :
Beaton، نويسنده , , Alexander D. and Sieben، نويسنده , , Vincent J. and Floquet، نويسنده , , Cedric F.A. and Waugh، نويسنده , , Edward M. and Abi Kaed Bey، نويسنده , , Samer and Ogilvie، نويسنده , , Iain R.G. and Mowlem، نويسنده , , Matthew C. and Morgan، نويسنده , , Hywel، نويسنده ,
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.
Keywords :
Griess nitrite detection , Automated PMMA microfluidic chip , Integrated colourimetric sensor , Spectrophotometry , Environment
