Can Current Regulations Account for Intentionally Produced Nanoplastics?

Monikh, Fazel Abdolahpur; Hansen, Steffen Foss; Vijver, Martina G.; Kentin, Esther; Nielsen, Maria Bille; Baun, Anders; Syberg, Kristian; Lynch, Iseult; Valsami-Jones, Eugénia; Peijnenburg, Willie J.G.M.

doi:10.1021/acs.est.2c00965

Cited by 19 publications

(8 citation statements)

References 15 publications

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“…Based on the evidence of negative impacts of nanoplastics on terrestrial plants from our systematic analysis, we recommend that nanoplastics be incorporated in the 2024 global plastic framework of the United Nations Environment Assembly (UNEA-5) and related important policy and legislative processes (such as the restriction proposal on intentionally added microplastics by the European Chemicals Agency). , Despite our initial models are based on limited data, we believe that as more experimental data sets from environmental relevant exposures (e.g., at realistic nanoplastic exposure concentrations in soil and large-scale field studies covering more ecosystem types) are made available, , a solid factual basis from which to understand plant and ecosystem responses will be established. This will offer guideline levels of nanoplastics to protect environmental and human health under the regulatory frameworks and provide regulatory intervention strategies to achieve the United Nations Sustainable Development Goal (SDG) 2 (“Achieve food security and improved nutrition and promote sustainable agriculture”) and SDG 15 (“Protect, restore and promote sustainable use of terrestrial ecosystems”) under global cooperation. , …”

Section: Resultsmentioning

confidence: 99%

Threats to Terrestrial Plants from Emerging Nanoplastics

et al. 2022

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Nanoplastics are ubiquitous in ecosystems and impact planetary health. However, our current understanding on the impacts of nanoplastics upon terrestrial plants is fragmented. The lack of systematic approaches to evaluating these impacts limits our ability to generalize from existing studies and perpetuates regulatory barriers. Here, we undertook a meta-analysis to quantify the overall strength of nanoplastic impacts upon terrestrial plants and developed a machine learning approach to predict adverse impacts and identify contributing features. We show that adverse impacts are primarily associated with toxicity metrics, followed by plant species, nanoplastic mass concentration and size, and exposure time and medium. These results highlight that the threats of nanoplastics depend on a diversity of reactions across molecular to ecosystem scales. These reactions are rooted in both the spatial and functional complexities of nanoplastics and, as such, are specific to both the plastic characteristics and environmental conditions. These findings demonstrate the utility of interrogating the diversity of toxicity data in the literature to update both risk assessments and evidence-based policy actions.

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Section: Resultsmentioning

confidence: 99%

Threats to Terrestrial Plants from Emerging Nanoplastics

et al. 2022

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“…NPs have been compared to MPs and engineered nanomaterials (ENMs; Abdolahpur Monikh et al, 2022), but it is becoming increasingly clear this may not be appropriate (Gigault et al, 2021). For instance, at such fine scales, NP behaviour is dominated by Brownian motion (Sun et al, 2021), rather than the sedimentation or buoyancy that determines MP fate (Horton and Dixon, 2018).…”

Section: Introductionmentioning

confidence: 99%

Uptake, distribution and elimination of palladium-doped polystyrene nanoplastics in rainbow trout (Oncorhynchus mykiss) following dietary exposure

Clark

Khan

Crowther

et al. 2023

Science of The Total Environment

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“…For regulatory purposes, the EC recommended a definition for NMs in 2011 and the revision will be released soon. 44 To enable safety assessment and management and implementation of regulation, the size range of 1–100 nm was proposed and adopted. Toxicity of materials is however not limited to a specific size, e.g.…”

Section: Challenges Surrounding the Hazard Assessment Of Admasmentioning

confidence: 99%