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Regulatory frameworks need to distinguish persistent from transient plastic fragments
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This commentary argues that current rules often lump all plastic particles under 5 millimeters together as "microplastics," ignoring how long they last in the environment. It proposes that regulations instead separate these particles into categories based on how quickly they break down versus how long they persist.
Plastic particles below a diameter of 5 mm are often grouped together under the label ‘microplastics’ in current Environmental Impact Assessment protocols, regardless of their environmental half-life. We argue for a fundamental shift in nomenclature and regulatory frameworks: microplastics should be regulated according to degradability, with separate categories for transient and persistent particles. Plastic particles below a diameter of 5 mm are often grouped together under the label ‘microplastics’ in current Environmental Impact Assessment protocols, regardless of their environmental half-life. This Comment argues that microplastics should be regulated according to degradability, with separate categories for transient and persistent particles.
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This paper argues that persistence alone — the ability of a chemical to resist degradation in the environment — should be treated as a major hazard concern in chemical regulation, even without established toxicity data. The argument is directly relevant to microplastics, which are highly persistent and accumulate in ecosystems over time.
Microplastic regulation should be more precise to incentivize both innovation and environmental safety
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This commentary argues that current microplastic regulations are too broad and imprecise, failing to distinguish between harmful and benign microplastic applications. The authors call for more targeted regulation that incentivizes innovation in safer materials while effectively controlling the most environmentally damaging uses of microplastics.
Plastic as a Sediment – A Universal and Objective practical solution to growing ambiguity in plastic litter classification schemes
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This study proposes treating plastic as a sediment, borrowing the classification principles of sedimentology to create a universal, objective framework for categorizing plastic pollution across environments. The approach aims to resolve persistent ambiguity and inconsistency in micro-, meso-, and macroplastic classification schemes that currently prevent meaningful comparisons between studies.
Rethinking microplastics as a diverse contaminant suite
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Researchers argue that the term microplastics oversimplifies what is actually a hugely diverse class of contaminants varying in size, shape, polymer type, and chemical additives. Treating all microplastics as a single pollutant leads to studies and regulations that may miss critical differences in how various particles behave and affect organisms. The study calls for a more nuanced approach that treats microplastics as a contaminant suite, similar to how pesticides or pharmaceuticals are categorized.
Problemi pravne (ne)reguliranosti (mikro)plastike u morskom i riječnom okolišu
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This Croatian legal analysis examines the inadequacies of current national and international regulations governing microplastic pollution in marine and river environments. It argues that existing legal frameworks are insufficient to address the durability and transboundary transport of plastic particles.
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.