Novel optical sensing system based on wireless paired emitter detector device for lab on a disc water quality analysis
Czugala, Monika and Gorkin, Robert and Phelan, Thomas and Ducrée, Jens and Diamond, Dermot and Benito-Lopez, Fernando (2011) Novel optical sensing system based on wireless paired emitter detector device for lab on a disc water quality analysis. In: MicroTAS 2011 Conference, 2-6 Oct. 2011, Seattle, USA.
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This work describes the first use of a wireless paired emitter detector diode (PEDD) as an optical sensor for water
quality monitoring in a lab-on-a-disc device. The microfluidic platform, based on a pH dye/ionogel sensing area combined with a low-cost, wireless optical sensor, PEDD, is applied for monitoring the pH and the degree of turbidity of water samples in real time. Calibration of the system resulted in a linear response that obeys the Beer-Lambert Law. A reasonable correlation between water pH results obtained using the PEDD system and a standard pH-meter was obtained.
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