Rapid identification of microplastic using portable Raman system and extra trees algorithm

Si-Jie Yang; Wei-Wei Feng; Qing Wang; Zong-Qi Cai; Qian-Ying Liu; Yao-Bin Hou; Qian-Quan Zhang

doi:10.1117/12.2573364

10 October 2020 Rapid identification of microplastic using portable Raman system and extra trees algorithm

Si-Jie Yang, Wei-Wei Feng, Qing Wang, Zong-Qi Cai, Qian-Ying Liu, Yao-Bin Hou, Qian-Quan Zhang

Proceedings Volume 11555, Real-time Photonic Measurements, Data Management, and Processing V; 115550T (2020) https://doi.org/10.1117/12.2573364
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

Recently, microplastics (MP) have emerged as global contaminants that seriously affect human and ecological health. However, rapid identification of MP is still a challenge, whether from oceans, wastewater, sediment or soil. A system based on laser-Raman spectroscopy analysis for qualitative testing of MP was established. The monitoring system can realize in-situ real-time detection and nondestructive testing, which provide a large amount of Raman spectroscopy of MP for Marine environmental analysis. A database suitable for microplastics analysis was presented based on the characteristic of Raman spectroscopy. Extra Trees algorithm was presented for the automatic identification of MP in this paper. The algorithm network is trained to detect random MP based on the established database, which including pure MP and mixed MP. The experiment result shows that several MP samples, including pure polystyrene (PS), Polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyethylene (PE), Polyamide (PA), polyvinyl chloride (PVC) and polypropylene (PP) could be individually and automatically identified. The experiment result demonstrated that over 98.82% mixed particles could be correctly identified. The results were consistent with Extra Trees model built for identifying six types of MP, indicating Extra Trees model was highly robust for more than six of MP detection. The spectroscopy analysis method in this paper provides data support for systematically understanding the microplastic contamination.

Conference Presentation

Citation Download Citation

Si-Jie Yang, Wei-Wei Feng, Qing Wang, Zong-Qi Cai, Qian-Ying Liu, Yao-Bin Hou, and Qian-Quan Zhang "Rapid identification of microplastic using portable Raman system and extra trees algorithm", Proc. SPIE 11555, Real-time Photonic Measurements, Data Management, and Processing V, 115550T (10 October 2020); https://doi.org/10.1117/12.2573364

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