A multimedia model to estimate the environmental fate of microplastic particles

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 882, P. 163437 - 163437

Published: April 12, 2023

Nano- and microplastic (NMP) is a diverse challenging contaminant data on NMP concentrations are therefore not fully available for all environmental compartments. For assessments of NMP, screening-level multimedia models can fill this gap, but such available. Here, we present SimpleBox4Plastic (SB4P) as the first 'unit world' model capable addressing full continuum, explore its validity, evaluate it based case study microbeads by comparisons with (limited) concentration data. SB4P links transport in across air, surface water, sediment, soil, taking into account processes attachment, aggregation, fragmentation, solving mass balance equations using matrix algebra. These link known to be relevant first-order rate constants, which obtained from literature. The model, applied microbeads, provided or number total 'free' particles, heteroaggregates natural colloids, larger particles each compartment at steady state. Processes most explaining observed Predicted Exposure Concentrations (PECs) were determined rank correlation analysis. Although predicted PECs remained uncertain due propagating uncertainty, inferences regarding these relative distribution compartments considered robust.

Language: Английский

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Microplastic Contamination of a Benthic Ecosystem in a Hydrothermal Vent

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(17), P. 7636 - 7642

Published: April 17, 2024

Plastic contamination is a global pervasive issue, extending from coastal areas and open oceans to polar regions even the deep sea. Microplastic (MP) in hydrothermal vents, which are known for their high biodiversity under extreme conditions, has remained largely unexplored. Here, we present, first time, MP pollution deep-sea vent at one of hotspots─the Central Indian Ridge. Not only environment (seawater: 2.08 ± 1.04 MPs/L, surface sediments: 0.57 0.19 MP/g) but also all six major benthic species investigated were polluted by MPs. MPs mainly consisted polypropylene, polyethylene terephthalate, polystyrene fragments ≤100 μm characterized as being either transparent or white color. Remarkably, bioaccumulation biomagnification microplastics observed top predators ecosystem, such squat lobsters (14.25 4.65 MPs/individual) crabs (14.00 2.16 MPs/individual), since they contained more than animals lower trophic levels (e.g., mussels snails, 1.75–6.00 average MPs/individuals). These findings reveal an ecosystem vent, thereby suggesting that accumulation magnification can occur top-level animals, within remote environments.

Language: Английский

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Microplastics in freshwater ecosystems: A significant force of disrupting health and altering trophic transfer patterns by reduced assimilation efficiency of aquatic organisms

Aquaculture, Journal Year: 2024, Volume and Issue: 594, P. 741463 - 741463

Published: Aug. 8, 2024

Language: Английский

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The Paleoecology of Microplastic Contamination

Frontiers in Environmental Science, Journal Year: 2020, Volume and Issue: 8

Published: Sept. 24, 2020

While the ubiquity and rising abundance of microplastic contamination is becoming increasingly well known, there very little empirical data for scale their historical inputs to environment. For many pollutants, where long-term monitoring absent, palaeoecological approaches (the use naturally-accumulating archives assess temporal trends) have been widely applied determine such patterns, but date this has undertaken only rarely microplastics, despite enormous potential identify extent as rates change. In paper, we briefly review literature before considering advantages disadvantages various natural (including lake marine sediments, ice cores peat archives) a means records, range challenges facing those attempting extract microplastics from them. We also outline some major considerations in chemical, physical biological taphonomic processes these are critical correct interpretation records currently considered. Finally, usefulness stratigraphic tool, both provide chronological information, possible marker proposed Anthropocene Epoch.

Language: Английский

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Predicting and assessing the toxicity and ecological risk of seven widely used neonicotinoid insecticides and their aerobic transformation products to aquatic organisms

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 847, P. 157670 - 157670

Published: July 28, 2022

Language: Английский

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