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Microplastics – Nanoplastics, Life Cycle Analysis and Environmental Risk Assessment
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Researchers examined whether microplastics affect the swimming behavior of marine fish larvae, finding that exposure to polystyrene particles at environmentally relevant concentrations impaired burst swimming speed and routine activity. The behavioral deficits were accompanied by changes in larval body condition, suggesting that microplastic effects on early life history traits could influence recruitment success.
A global agreement to end plastic pollution must be based on pertinent, multi-disciplinary knowledge. Consideration of the full life cycle impacts of plastics and substitutes is important to achieve sustainable solutions rather than shifting the burden.Hence, this process requires considerations of fossil-based and biobased feedstocks for plastic production, plastic chemicals, and additives, plastic degradation pathways and intermediates, environmental impacts, ecotoxicological and human health effects, socio-economic costs, etc. Life Cycle Assessment (LCA) is a tool to assess the full life cycle impacts considering many impacts mid and end-point impact categories such as climate change, ecotoxicity, human toxicity, etc. However, the present LCA methodological approaches have limitations in including the impacts ofmicroplasticsin the LCA.The two of the Society of Environmental Toxicology and Chemistry (SETAC) interest groups (Microplastics interest group and LCA interests group) bring this into the discussion at the 43rd North American Annual Meeting in Pittsburgh.
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Topical Discussion: Understanding Microplastic Fate and (Eco) Toxicity Through Interdisciplinary Collaboration
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This study assessed microplastic contamination in freshwater systems of a remote mountainous region with minimal local human activity, finding particle concentrations that exceeded predictions based on local inputs alone. Atmospheric deposition was quantified as a significant input pathway, demonstrating that no surface water body is isolated from global microplastic contamination.
Life-cycle Assessment of Microplastics in the Environment
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This chapter applied life cycle assessment (LCA) methodology to examine the full environmental impact of microplastics, from production through environmental release, covering ecological and human health impacts, methodological challenges of applying LCA to persistent pollutants, and knowledge gaps for future research.
Integrating impacts of microplastics in Life Cycle Assessment modelling: the work of the MarILCA group
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This paper describes the work of the MarILCA group to incorporate microplastic impacts into Life Cycle Assessment (LCA) modeling, which evaluates the environmental footprint of products and processes. Currently, most LCA studies ignore plastic leakage to the environment, creating a blind spot for the real-world impacts of plastic production. Integrating microplastic impacts into LCA could help guide more sustainable material choices and policy decisions.
Developing human noncancer and reproductive/developmental effect factors for nano- and microplastics exposure in LCA
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This study developed noncancer and reproductive/developmental effect factors for nano- and microplastics for use in life cycle impact assessment, filling a gap in toxicological characterization needed to include plastic particles in environmental health accounting. The framework supports integrating microplastic health impacts into standardized life cycle assessments.
Microplastic aquatic impacts included in Life Cycle Assessment
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Researchers developed a method to include the environmental damage caused by microplastic pollution in standard lifecycle assessments (LCAs) — the tool companies use to measure a product's environmental footprint — and found that plastic pollution often dominated the toxicity impact scores for consumer packaging. Adding plastic pollution to these assessments could help identify where in a product's life cycle plastic losses cause the most ecological harm.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.