Microfibers in oceanic surface waters: A global characterization
| Autor: | Giuseppe Suaria, Aikaterini Achtypi, Thomas G. Bornman, Peter G. Ryan, Jasmine R. Lee, Vonica Perold, Andrea Pierucci, Stefano Aliani |
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| Rok vydání: | 2019 |
| Předmět: |
geography
Microplastics Multidisciplinary geography.geographical_feature_category business.product_category 010504 meteorology & atmospheric sciences Earth science Environmental Studies SciAdv r-articles 010501 environmental sciences Oceanography 01 natural sciences Characterization (materials science) Synthetic fiber Microfiber Environmental science Seawater Fiber Oceanic basin business Plastic pollution Research Articles 0105 earth and related environmental sciences Research Article |
| Zdroj: | Science Advances |
| ISSN: | 2375-2548 |
| Popis: | Contrary to global production, most fibers floating in the ocean are not synthetic but natural fibers of animal or plant origin. Microfibers are ubiquitous contaminants of emerging concern. Traditionally ascribed to the “microplastics” family, their widespread occurrence in the natural environment is commonly reported in plastic pollution studies, based on the assumption that fibers largely derive from wear and tear of synthetic textiles. By compiling a global dataset from 916 seawater samples collected in six ocean basins, we show that although synthetic polymers currently account for two-thirds of global fiber production, oceanic fibers are mainly composed of natural polymers. µFT-IR characterization of ~2000 fibers revealed that only 8.2% of oceanic fibers are synthetic, with most being cellulosic (79.5%) or of animal origin (12.3%). The widespread occurrence of natural fibers throughout marine environments emphasizes the necessity of chemically identifying microfibers before classifying them as microplastics. Our results highlight a considerable mismatch between the global production of synthetic fibers and the current composition of marine fibers, a finding that clearly deserves further attention. |
| Databáze: | OpenAIRE |
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