Miniaturized and High Precision Monitoring System for Natural Waters Using a Microflow Analyzer

Abstract

In this work, we fabricated a miniaturized water quality monitoring system with microfluidic analysis chip to meet the high density and network requirements of wide area water system monitoring. The framework of the system is a layered tower structure, including human-computer interaction module, micro-control module, microfluidic chip and master control module. The miniaturized water quality monitoring system optimizes the integration of microfluidic technology and absorption photometric detection methods, and the design of the micro control system ensures automatic analysis of water quality. Experiments show that the system has excellent detection performance while achieving miniaturization. The detection limit (LOD) of the miniatured analyzer was 3.4 μM, and the reaction time was between 100 s and 300 s. The reagent consumption is only 6 μL per sample.