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Optical measurement technologies for detecting low levels of pollution and identifying microplastics in water
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Researchers reviewed optical technologies for detecting and identifying microplastics in water, experimentally characterizing the fluorescence spectra of PE and PET microplastic samples under 365 nm excitation and identifying spectral bands enabling identification of different polymer types, then proposing a comprehensive hardware solution using a fluorescent probe for microplastic visualization.
An overview of the problem of contamination of water bodies with microplastics and methods of detection and identification of microplastics using optical technologies was carried out on the basis of general information in available Internet sources. Advantages and disadvantages of existing optical methods are determined. Features of the fluorescence spectrum of PE and PET micropastic samples when excited at a wavelength of 365 nm were determined experimentally. During the analysis of the spectra, radiation bands were found, which allow spectral identification of different types of microplastics. A comprehensive hardware solution for visualization of microplastics using a fluorescent probe-analyzer for remote monitoring of microplastics on the water surface and shoreline is proposed.
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