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Microfibers in the ocean: are they all made of plastic?
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This science communication piece highlights that the vast majority of tiny fibres found in ocean samples are actually natural materials like cotton and wool, not plastic — challenging widespread assumptions in microplastic research. The author argues that better fibre characterisation is needed to accurately assess the plastic component of textile pollution.
Many people are now aware of the danger microplastics pose to oceanic wildlife. However, textile fibers released from fabrics we use every day have been overlooked until recently. The vast majority of these tiny thread-like particles - which have long been assumed to be plastic - are actually natural fibers like cotton and wool. - submission by Giuseppe Suaria
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All that glitters is not plastic: the case of open-ocean fibres
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Researchers analyzed open-ocean textile fibers and found that a significant proportion are not synthetic plastics but rather natural fibers such as cotton and wool, challenging the assumption that all environmental fibers constitute microplastic pollution. This study calls for more precise characterization of fiber types in environmental monitoring to accurately assess plastic versus non-plastic contamination.
When microplastics are not plastic: Chemical characterization of environmental microfibers using stimulated Raman microspectroscopy
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Researchers used advanced Raman microscopy to determine whether microfibers found in various marine environments are actually made of plastic. They found that roughly three-quarters of environmental microfibers are natural materials like cotton or cellulose rather than synthetic polymers. The study suggests that many previous estimates of microplastic fiber pollution may have significantly overcounted by misidentifying natural fibers as plastic.
Microfibers in oceanic surface waters: A global characterization
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A global analysis of 916 seawater samples from six ocean basins characterized microfibers as ubiquitous contaminants, finding that many are not synthetic textiles but natural or semi-synthetic materials, questioning the assumption that all environmental fibers are microplastic.
Freshwater and airborne textile fibre populations are dominated by ‘natural’, not microplastic, fibres
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Researchers monitoring fibre pollution in a UK river and its surrounding air over twelve months found that natural textile fibres (e.g., cotton, wool) dominated the samples, representing 93.8% of all fibres detected, while synthetic microplastic fibres were entirely absent from more than 80% of samples.
Marine environment microfiber contamination: Global patterns and the diversity of microparticle origins
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Global patterns of microfiber contamination in the marine environment were reviewed, documenting that synthetic and non-synthetic fibers are found in all major ocean basins, with fibers being the most common microplastic type along shorelines. The review highlights that non-synthetic and semi-synthetic fibers are frequently overlooked in monitoring despite being a significant component of total microfiber pollution.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.