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Abstract
Microplastics contaminating drinking water is a growing issue that has been the focus of a few recent studies, where a major bottleneck is the time-consuming analysis. In this work, a micro-optofluidic platform is proposed for fast quantification of microplastic particles, the identification of their chemical nature and size, especially in the 1–100 µm size range. Micro-reservoirs ahead of micro-filters are designed to accumulate all trapped solid particles in an ultra-compact area, which enables fast imaging and optical spectroscopy to determine the plastic nature and type. Furthermore, passive size sorting is implemented for splitting the particles according to their size range in different reservoirs. Besides, flow cytometry is used as a reference method for retrieving the size distribution of samples, where chemical nature information is lost. The proof of concept of the micro-optofluidic platform is validated using model samples where standard plastic particles of different size and chemical nature are mixed.
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Details
1 Univ. Gustave Eiffel, ESIEE Paris, ESYCOM, CNRS UMR 9007, Noisy-le-Grand, France (GRID:grid.509737.f)
2 Univ. Gustave Eiffel, ESIEE Paris, ESYCOM, CNRS UMR 9007, Noisy-le-Grand, France (GRID:grid.509737.f); Ain Shams University, ECE Department, Faculty of Engineering, Cairo, Egypt (GRID:grid.7269.a) (ISNI:0000 0004 0621 1570)
3 LEESU, ENPC UPEC, Marne-la-Vallee cedex, France (GRID:grid.503335.3) (ISNI:0000 0004 6816 7181)
4 LEESU, ENPC UPEC, Marne-la-Vallee cedex, France (GRID:grid.503335.3) (ISNI:0000 0004 6816 7181); GERS-LEE Université Gustave Eiffel, IFSTTAR, Bouguenais, France (GRID:grid.509737.f)
5 COSYS-LISIS, Univ Gustave Eiffel, IFSTTAR, Marne-la-Vallée, France (GRID:grid.509737.f); UMR 7647 CNRS/ Ecole Polytechnique, Laboratory of Physics of Interfaces and Thin Films, IPParis, France (GRID:grid.10877.39) (ISNI:0000000121581279)
6 Univ. Gustave Eiffel, ESIEE Paris, ESYCOM, CNRS UMR 9007, Noisy-le-Grand, France (GRID:grid.509737.f); Nanyang Technological University, School of Electrical and Electronic Engineering, Singapore, Singapore (GRID:grid.59025.3b) (ISNI:0000 0001 2224 0361)
7 Nanyang Technological University, School of Electrical and Electronic Engineering, Singapore, Singapore (GRID:grid.59025.3b) (ISNI:0000 0001 2224 0361)