We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
The impact of microplastic weathering on interactions with the soil environment: a review
AI summary Read the abstract
This review examines how weathering — exposure to UV light, moisture, and physical forces — changes the surface properties of microplastics and affects their interactions with soil. Weathered microplastics behave differently in the environment, potentially altering soil structure and the movement of water and nutrients.
Abstract. Recent studies have reported the influence of microplastic on soil quality parameters. Mass concentrations of plastic particles as found in highly contaminated soils were shown to weaken the soil structure by reducing the proportion of water stable aggregates (WSA). In addition, parts of the edaphon are adversely affected by mainly the < 100 µm microplastic fraction. The specific interaction of soil microplastic with other particulate organic matter (POM) and the mineral phase during the formation of soil aggregates as well as the adverse effects of especially the small-sized fraction, which has low weight but high specific surface area, justify a focus on surface properties of the soil microplastic and their alteration during the plastic life cycle. Exposed to UV radiation, juvenile plastic undergoes photochemical weathering with embrittlement and the formation of surface charge. When plastic particles enter the soil environment, a second step takes place, that includes biogeochemical weathering with enzymes, biotic and abiotic acids, oxidants as well as bioturbation and feeding of soil fauna. This work integrates recent findings on the effects of microplastic on soil structure and biota, the genesis of its surface characteristics and discusses how to reproduce them to conduct laboratory experiments with close-to-nature designer microplastic.
More Papers Like This
Weathering of microplastics and interaction with other coexisting constituents in terrestrial and aquatic environments
AI summary Read the abstract
This review summarizes how microplastics weather and interact with other environmental constituents in both terrestrial and aquatic systems. Researchers found that weathering processes such as UV exposure and microbial activity alter the surface properties of microplastics, increasing their ability to adsorb heavy metals, organic pollutants, and pathogens. The study highlights that weathered microplastics may pose greater environmental risks than pristine particles due to their enhanced capacity to carry contaminants.
Effect of weathering on environmental behavior of microplastics: Properties, sorption and potential risks
AI summary Read the abstract
This review examines how environmental weathering changes the physical and chemical properties of microplastics, affecting their ability to absorb pollutants and their toxicity to organisms. Researchers found that weathered microplastics develop altered surface chemistry, increased surface area, and changed color, all of which influence how they interact with contaminants and are ingested by aquatic life. The study also evaluates the toxic potential of chemical byproducts released during the weathering process itself.
Thermal oxidation, ultraviolet radiation, and mechanical abrasion - understanding mechanisms of microplastic generation and chemical transformation
AI summary Read the abstract
Researchers evaluated how consumer-derived polymers fragment and chemically transform when exposed to UV radiation or thermal oxidation followed by soil abrasion. The study found that these combined weathering processes, which mimic real-world environmental conditions, significantly affect the rate and type of microplastic generation. The results highlight how everyday use and environmental exposure work together to break down plastics into microplastic particles.
Photodegradation modifies microplastic effects on soil properties and plant performance
AI summary Read the abstract
Researchers examined how UV-driven photodegradation alters the effects of microplastics on soil properties and plant growth. The study found that degraded plastic fibers increased soil water retention and respiration more than their non-degraded counterparts, while degraded foams reduced soil aggregation, demonstrating that the environmental weathering state of microplastics is an important factor in determining their ecological impact.
Micro- and Nanoplastic Processes: Degradation, Fragmentation, Aggregation and the Need for Environmentally Relevant Reference Materials
AI summary Read the abstract
This research review explains how tiny plastic particles break down and change when exposed to sunlight, water, and bacteria in the environment. These weathered plastic pieces behave very differently from fresh plastics—they can clump together and move through soil and water in new ways, potentially affecting where they end up in our food and water systems. Understanding how plastics age and change is crucial for predicting their long-term impacts on human health and the environment.
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.