講演情報
[25p-12B-3]Fluorescence LiDAR Detection of Microplastics in Natural Waters
〇(D)Jumar Cadondon1,2,3, Edgar Vallar1, Maria Cecilia Galvez1, Tatsuo Shiina3 (1.De La Salle Univ., 2.Univ. of the Philippines, 3.Chiba Univ.)
キーワード：
Fluorescence LiDAR、Microplastics、Suspended particles
There has been reports on the increasing amount of microplastics in the water systems. Detection of microalgae, organic matter and other suspended particles were measured using a 405-nm fluorescence LiDAR system. Emission measurements were conducted at 420-nm for organic matter and microplastic (polystyrene) detection at 420-nm and chlorophyll-a at 680-nm. Varying mass concentrations of polystyrene were introduced into the water tank for fluorescence analysis. To remove the contributions of CDOM and water from the plastic signals, we subtracted the acquired LiDAR backscattered signals obtained. High correlation was measured between the backscattered signal of polystyrene and its corresponding mass concentrations. This study has shown the potential of the fluorescence LiDAR technique for the remote sensing of MPs and other suspended particles in natural waters. This result provides information on the behavior of suspended particles in turbid waters.