Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 156, Issue 2, Pages 1009-1014Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2011.02.042
Keywords
Griess nitrite detection; Automated PMMA microfluidic chip; Integrated colourimetric sensor; Spectrophotometry; Environment
Funding
- ESPRC
- NERC
- University of Southampton
- Natural Sciences and Engineering Research Council of Canada
- Engineering and Physical Sciences Research Council [EP/E016774/1] Funding Source: researchfish
- Natural Environment Research Council [noc010003, noc010013, NE/I012974/1, NE/I008845/1] Funding Source: researchfish
- EPSRC [EP/E016774/1] Funding Source: UKRI
- NERC [NE/I012974/1, NE/I008845/1, noc010013, noc010003] Funding Source: UKRI
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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. (C) 2011 Elsevier B.V. All rights reserved.
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