Monitoring of Phosphate Levels in Wastewater Using an Autonomous Microfluidic Sensor
نویسندگان
چکیده
An autonomous sensor for monitoring phosphate levels in aqueous samples has been developed. The sensor is based on the molybdenum yellow method for detection of phosphate, which involves the formation of a yellow-coloured compound when a phosphate-containing sample is mixed with an acidic reagent containing ammonium molybdate and ammonium metavanadate. The reaction is carried out in a microfluidic chip and the colour change is detected using a LED (light-emitting diode) light source and a photodiode detector. The sensor has been applied to the analysis of effluent at a municipal wastewater treatment plant in Co. Kildare, Ireland.
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