ANALYSIS OF µPLASTICS POLLUTION IN THE MEDITERRANEAN SEA USING µFT-IR ANALYSIS - Archive ouverte HAL Accéder directement au contenu
Poster De Conférence Année : 2024

ANALYSIS OF µPLASTICS POLLUTION IN THE MEDITERRANEAN SEA USING µFT-IR ANALYSIS

Résumé

Pollution of marine environments by microplastics is a hot topic for society and science. There is a need of data for thoroughly characterizing the pollution, detecting hot-spots and developing mitigation measures. However, scientific expeditions to collect samples are costly and time-consuming. SEAPlastics, an initiative by AgroParisTech's students, addresses this by collecting samples from Mediterranean hotspots and organizing public awareness events in ports of France, Spain and Italy. AgroParisTech supports this effort in analyzing the collected samples and quantifying the pollution levels. However, there is no stabilized and rapid analytical method allowing their rapid identification and quantification. Currently, visual inspection, optical spectroscopy methods such as IR and RAMAN imaging are mainly used. (1) In the case of small microplastics (< 1 mm) and the presence of adhering biofilms, these methods become cumbersome and reliable quick monitoring is difficult. In this study, we worked on the analysis of microplastics, which were sampled by the organization SEAPLASTIC across various Mediterranean points, utilizing a Manta Net with 125 µm or 300 µm filters. We validated our sample pretreatment method consisting in density separation of plastics from inorganic constituents of the samples with a CaCl2 solution followed by degradation of volatile organic matter in H2O2 (30 %) and lastly filtration using inorganic Anodisc filters. The prepared samples were weighted and counted. For identification, they underwent µFT-IR analysis. Our quantitative results revealed a median weight of 40.50 g/km2 (range: 6 to 282 g/km2) and a particle count of 3.6*104 particles/km2 (range: 3*103 to 1.74*105 particles/km2). For the recognition of the microplastic through spectral analysis, we found out that the majority of the plastic found were polyethylene and polypropylene. Comparative analysis with existing research data (2) demonstrates the efficiency and rapidity of our methodology, establishing its credibility in providing reliable results. Lastly this data have been plotted in a heatmap to link the quantity of microplastic found with the population. References. 1. Schymanski D., et al. Analysis of Microplastics in Drinking Water and Other Clean Water Samples with Micro-Raman and Micro-Infrared Spectroscopy: Minimum Requirements and Best Practice Guidelines. Anal. Bioanal. Chem. 2021. 2. Cincinelli, A., et al. A potpourri of microplastics in the sea surface and water column of the Mediterranean Sea. Trac-Trends in Analytical Chemistry 2019, 110, 321-326.
Fichier principal
Vignette du fichier
Poster SEAplastics.pdf (2.17 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04435342 , version 1 (02-02-2024)

Identifiants

  • HAL Id : hal-04435342 , version 1

Citer

Sandra Domenek, Christian Ottini. ANALYSIS OF µPLASTICS POLLUTION IN THE MEDITERRANEAN SEA USING µFT-IR ANALYSIS. 1st International Congres on Food and Environmental Sciences ICFES 24', Jan 2024, Meknès, Morocco. ⟨hal-04435342⟩
148 Consultations
19 Téléchargements

Partager

Gmail Mastodon Facebook X LinkedIn More