FN Archimer Export Format PT J TI A machine learning algorithm for high throughput identification of FTIR spectra: Application on microplastics collected in the Mediterranean Sea BT AF Kedzierski, Mikaël Falcou-Préfol, Mathilde Kerros, Marie Emmanuelle Henry, Maryvonne Pedrotti, Maria Luiza Bruzaud, Stéphane AS 1:1;2:1;3:2;4:3;5:2;6:1; FF 1:;2:;3:;4:PDG-ODE-LITTORAL-LERPAC;5:;6:; C1 Université Bretagne Sud, UMR CNRS 6027, IRDL, F-56100, Lorient, France Sorbonne Universités, UMR CNRS 7093, LOV, F-06230, Villefranche sur mer, France IFREMER, LER/PAC, F-83500, La Seine-sur-Mer, France C2 UBS, FRANCE UNIV PARIS 06, FRANCE IFREMER, FRANCE SI TOULON SE PDG-ODE-LITTORAL-LERPAC IN WOS Ifremer UPR copubli-france copubli-univ-france IF 5.778 TC 81 UR https://archimer.ifremer.fr/doc/00501/61247/64825.pdf LA English DT Article DE ;Microplastic;Tara mediterranean campaign;FTIR spectra;Machine learning;k-nearest neighbor classification AB 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. PY 2019 PD NOV SO Chemosphere SN 0045-6535 PU Elsevier BV VL 234 UT 000488136200025 BP 242 EP 251 DI 10.1016/j.chemosphere.2019.05.113 ID 61247 ER EF