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Research on a Pulsed Laser-Based Real-Time Microplastic Sensor Monitoring System for Freshwater
Original title: 펄스 레이저 기반 담수용 미세 플라스틱 실시간 센서 모니터링 시스템 연구
Summary
This Korean study developed a pulsed laser-based optical sensor system for real-time monitoring and counting of microplastic particles in freshwater, demonstrating detection of standard microbeads of 100-500 micrometers. The system offers a rapid, field-deployable approach to quantifying microplastic concentrations in river water.
Pulsed laser-based optical sensor monitoring systems for real time microplastic particle counting are proposed and developed in this study. To develop our real time monitoring system, we used a 450 nm pulsed laser and a photomultiplier with very high quantum efficiency. First, we demonstrated that the microplastic particle counting system could detect standard micro bead samples of 100, 250, and 500 μm in river water. We then performed research concerning pulsed laser-based optical spectral sensor systems for real time microplastic monitoring. Additionally, we demonstrated that the real time microplastic remote monitoring system using LoRa communications could detect microplastic in the tap water resource protection area.