Journal
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
Volume 148, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2022.116535
Keywords
Microplastics; Fourier-transform Infrared spectroscopy; Raman spectroscopy; Hyperspectral imaging; Chemometrics; Machine learning; Database; Library
Categories
Funding
- Bayerische Forschungsstiftung [AZ-1258-16]
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This article discusses data analysis methods for identifying microplastics using vibrational spectra, introduces relevant programs provided by the scientific community, and aims to provide guidance for those who want to establish or enhance data analysis routines for vibrational spectra of microplastics.
With worldwide aims to monitor microplastics (MP) in the environment, food and drinking water, there is a growing need for fast, reliable and high-throughput analysis methods. While on the instrumental side, spectroscopic techniques are used widely as they proved suitable for identifying even micron-range plastic particles, there is a gap to fill on the data analysis side. Vibrational spectra of MP are highly complex, and often, large data sets need to be evaluated. Methods range from classical library search to complex artificial intelligence models, each of which has its strengths and weaknesses. This critical review discusses the accuracy, robustness and expenditure of data analysis routines proposed for identification of MP using vibrational spectra. Programs provided by the scientific community dedicated to MP analysis are introduced. Thereby, this review aims to provide guidance for everyone who wants to set up or enhance a data analysis routine for vibrational spectra of MP.(c) 2022 Elsevier B.V. All rights reserved.
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