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The Dark Matter in Water and Land: From Microplastic to Invisible Nanoplastics
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This review focused on nanoplastics — particles smaller than 1 µm — summarizing what is known and unknown about their presence in diverse environments from the ocean to the human brain, and their potential health effects. The author highlighted critical knowledge gaps, particularly regarding nanoplastic dose-response relationships and long-term health consequences.
Microplastic is well known and has been the subject of many review articles. In recent years, an increasing number of reports have documented the presence of nanoplastics—plastic particles smaller than 1 µm—in various environments, from the ocean to the human brain. In this article, I focus on nanoparticles and what we do and do not understand about their effects on our health. After an introduction to nanoplastics and their size relative to a single polymer chain, the degradation process that produces nanoplastics, similar to microplastics, is briefly summarized. Due to their high surface area, nanoplastics can behave differently in solution because they tend to aggregate. After reviewing the presence of microplastics and nanoplastics in humans, insights from the established field of nanomedicine are used to explore how nanoplastics may enter the bloodstream and reach the brain. This also includes the topic of protein corona formation, which influences the fate of nanoplastics in the body. Finally, a brief summary on the impact of plastic particles on health is provided, focusing on reports comparing nano- and microplastics. This article concludes with how materials scientists and chemists can contribute to addressing the rising plastic pollution problem.
More Papers Like This
The dark matter in water, air and land: from microplastic to invisible nanoplastics
AI summary Read the abstract
This review focused on nanoplastics — particles below 1 µm — summarizing what is known about their presence in diverse environments from ocean to human brain, and what gaps remain in understanding their health effects. The author argues that nanoplastics are the more dangerous but less studied component of plastic pollution.
Knowledge gaps on micro and nanoplastics and human health: A critical review
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This critical review assessed current evidence on micro- and nanoplastic exposure and human health, concluding that while humans are ubiquitously exposed via food, water, and air, the long-term health effects of chronic low-level exposure remain poorly understood.
Understanding the Source, Behaviour, and Fate of Nanoplastics in Aquatic Environments
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This review synthesizes current understanding of the sources, behavior, and fate of nanoplastics in aquatic environments, identifying a significant knowledge gap regarding the processes nanoplastics undergo after entering the hydrosphere, including their potential to traverse the blood-brain barrier and accumulate in vital organs. The authors highlight the ubiquity of plastic nanoparticles entering water systems and the urgency of understanding their environmental transformation and ultimate fate.
Micro‐ and Nanoplastics—An Invisible Threat to Human Health
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This review describes micro- and nanoplastics as an invisible threat to human health, examining how their small size and chemical complexity make them difficult to detect and assess. The authors call for better analytical tools, standardized methods, and expanded epidemiological research.
Environmental fate, toxicity and risk management strategies of nanoplastics in the environment: Current status and future perspectives
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This review provides a comprehensive look at nanoplastics -- tiny plastic particles smaller than one micrometer -- covering their environmental fate, toxic effects on organisms, and potential risks to ecosystems. Researchers found that nanoplastics can carry other pollutants like heavy metals and even serve as habitats for bacteria and viruses. The study calls for more research across all environmental compartments, including soil, air, and groundwater, to fully understand the scope of nanoplastic contamination.
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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.