A machine learning algorithm for high throughput identification of FTIR spectra: Application on microplastics collected in the Mediterranean Sea

Type : ACL
Nature : Production scientifique
Au bénéfice du Laboratoire : Oui
Statut de publication : Publié
Année de publication : 2019
Auteurs (6) : KEDZIERSKI Mikaël FALCOU-PRÉFOL Mathilde KERROS Marie-emmanuelle HENRY Maryvonne PEDROTTI Maria-luiza BRUZAUD Stéphane
Revue scientifique : Chemosphere
Volume :
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Pages :
DOI : 10.1016/j.chemosphere.2019.05.113
URL : http://www.sciencedirect.com/science/article/pii/s0045653519310197
Abstract : The development of methods to automatically determine the chemical nature of microplastics by FTIR-ATR spectra is an important challenge. A machine learning method, named k-nearest neighbors classification, has been applied on spectra of microplastics collected during Tara Expedition in the Mediterranean Sea (2014). To realize these tests, a learning database composed of 969 microplastic spectra has been created. Results show that the machine learning process is very efficient to identify spectra of classical polymers such as poly(ethylene), but also that the learning database must be enhanced with less common microplastic spectra. Finally, this method has been applied on more than 4000 spectra of unidentified microplastics. The verification protocol showed less than 10% difference in the results between the proposed automated method and a human expertise, 75% of which can be very easily corrected.
Mots-clés : Keywords Microplastic Tara mediterranean campaign; FTIR spectra; Machine learning; k-nearest neighbor classification
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Citation :
Kedzierski M, Falcou-Préfol M, Kerros M-E, Henry M, Pedrotti M-L, Bruzaud S (2019) A machine learning algorithm for high throughput identification of FTIR spectra: Application on microplastics collected in the Mediterranean Sea. Chemosphere | doi: 10.1016/j.chemosphere.2019.05.113