An autonomous microfluidic analyser for the determination of total phosphorus and nitrogen in aquatic systems

Excessive inputs of nitrogen and phosphorus from point and diffuse sources cause eutrophication of inland and coastal waters. This can lead to outbreaks of toxic algal blooms, which can also cause significant loss of recreational, conservation and commercial value of aquatic systems. The aim of this project is to design, construct and evaluate microfluidic flow analysers suitable for autonomous determination of total nitrogen and phosphorus for extended periods. These systems will enable environment agencies to monitor nutrients more cheaply and with greater frequency than is currently possible, leading to improved understanding of nutrient behaviour, and the establishment of better management strategies.