Issue 5, 2024

Identification of spectral responses of different plastic materials by means of multispectral imaging

Abstract

In this work, multispectral imaging (MSI) is introduced as an innovative, practical, and non-invasive solution capable of identifying and detecting (micro)plastics. MSI holds significant appeal for industry due to its flexibility, ease of implementation, and portability. The integration of MSI with Principal Components Analysis (PCA) enables precise identification of different plastics and differentiation of microplastics within mixtures. The technique successfully identifies and quantifies the pure spectral response (endmembers) of each microplastic in every pixel of the original image. As a result, the model excels in distinguishing specific plastic materials from their surrounding backgrounds. This novel approach facilitates the identification of randomly dispersed microplastics in water.

Graphical abstract: Identification of spectral responses of different plastic materials by means of multispectral imaging

Article information

Article type
Paper
Submitted
28 Jul 2023
Accepted
16 Nov 2023
First published
08 Feb 2024
This article is Open Access
Creative Commons BY-NC license

Environ. Sci.: Processes Impacts, 2024,26, 802-813

Identification of spectral responses of different plastic materials by means of multispectral imaging

G. Bragato, G. Piccolo, G. Sattier and C. Sada, Environ. Sci.: Processes Impacts, 2024, 26, 802 DOI: 10.1039/D3EM00324H

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