Microplastic aging processes: Environmental relevance and analytical implications

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 172, P. 117566 - 117566

Published: Jan. 30, 2024

The analysis of microplastics (MPs) in terrestrial environments and the evaluation their environmental risk has gained great attention, owing to increasing evidence for widespread presence soils freshwater sediments globally. Once environment, MPs undergo abiotic biotic processes which alter properties integrity: this process is called "aging" implications fate these contaminants, morphology surface chemistry. Aging may also affect analytical assessment samples: samples likely contain aged MPs, while methods are generally established using pristine plastics validation. This can lead uncertainties quantification characterization. critical review summarizes current trends simulation characterization MP aging laboratory conditions, highlighting limitations knowledge gaps. It discusses challenges induced by samples, providing directions toward possible solutions.

Language: Английский

---

The histopathological and functional consequences of microplastic exposure

Deleted Journal, Journal Year: 2025, Volume and Issue: 7(1)

Published: Jan. 11, 2025

As the production, usage, and disposal of plastics increase, microplastics generated—plastic particles smaller than 5 mm—increases, exacerbating environmental pollution. In turn, various organisms become increasingly exposed to contaminated environments, potentially affecting humans through food chain. Crucial findings from in vivo experiments indicate histopathological changes caused by impact morphology physiological function organisms. This study describes induced across circulatory, nervous, digestive, respiratory, reproductive systems explains associated functional alterations. Except nervous system, main morphological involve degenerative throughout body, such as apoptosis, inflammation, fibrosis. Most were inflammatory responses microplastics, leading fibrosis subsequent impairments. Various studies confirm that stimulate cells, increased reactive oxygen species cell death. Consequently, these impair related systemic functions. review highlights fundamental organs cells due discusses limitations involving showing no changes.

Language: Английский

---

Plastics and Micro/Nano-Plastics (MNPs) in the Environment: Occurrence, Impact, and Toxicity

International Journal of Environmental Research and Public Health, Journal Year: 2023, Volume and Issue: 20(17), P. 6667 - 6667

Published: Aug. 28, 2023

Plastics, due to their varied properties, find use in different sectors such as agriculture, packaging, pharmaceuticals, textiles, and construction, mention a few. Excessive of plastics results lot plastic waste buildup. Poorly managed (as shown by heaps on dumpsites, free spaces, along roads, marine systems) the landfills, are just fraction environment. A complete picture should include micro nano-plastics (MNPs) hydrosphere, biosphere, lithosphere, atmosphere, current extreme weather conditions (which effects climate change), wear tear, other factors promote MNP formation. MNPs pose threat environment more than pristine counterparts. This review highlights entry occurrence primary secondary soil, water air, together with aging. Furthermore, uptake internalization, plants, animals, humans discussed, toxicity effects. Finally, future perspective conclusion given. The material utilized this work was acquired from published articles internet using keywords waste, degradation, microplastic, aging, toxicity.

Language: Английский

---

The effect of water ozonation in the presence of microplastics on water quality and microplastics degradation

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 929, P. 172595 - 172595

Published: April 18, 2024

Language: Английский

---

Poly(vinyl chloride) (PVC): an updated review of its properties, polymerization, modification, recycling, and applications

Journal of Materials Science, Journal Year: 2024, Volume and Issue: 59(47), P. 21605 - 21648

Published: Nov. 27, 2024

Language: Английский

---

Role of water shear force for microplastics fragmentation into nanoplastics

Environmental Research, Journal Year: 2023, Volume and Issue: 237, P. 116916 - 116916

Published: Aug. 18, 2023

Wastewater treatment plants (WWTPs) are major recipients of microplastics (MPs) that break down into nanoplastics (NPs) during wastewater through physical, chemical, and biological processes. In particular, mechanical stress induced by the mixing process commonly used in WWTPs is thought to play a crucial role production secondary MPs/NPs, which then discharged open water environment WWTP effluent. This study investigated fragmentation 250 106 μm-sized pristine weathered polystyrene (PS) particles using four-blade impeller. At an energy density level 100 kJ/L, PS were broken mean sizes 120.6 ± 19.1 95.6 16.8 nm, respectively. The smallest found be 90.9 17.8 72.4 19.6 nm due breakdown particles, morphology after also demonstrated initiation surface damage, such as cracks, pores rough structures. crack propagation, caused mechanically shear force, was identified primary mechanism MP NPs. It NP levels significantly increased 40 min mixing, with at least 28-fold increase solution 32 kJ/L. These results clearly show MPs NPs continuous treatment, posing significant threat release effluents.

Language: Английский

---

Microplastics and associated chemicals in drinking water: A review of their occurrence and human health implications

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169594 - 169594

Published: Dec. 27, 2023

Language: Английский

---

First evidence of microplastics in the water and sediment of Surakarta city river basin, Indonesia

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 196, P. 115677 - 115677

Published: Oct. 18, 2023

The main aim of this study was to assess the presence microplastics in water and sediments Surakarta city river basin Indonesia. In order accurately reflect basin, a deliberate selection process employed choose three separate sampling locations twelve points. results revealed that fragments fibers were primary types seen both sediment samples. Furthermore, considerable percentage microplastics, comprising 53.8 % total, had dimensions below 1 mm. Moreover, prevailing hues identified samples blue black, 45.1 overall composition. contrast, same color categories accounted for 23.3 found soil analysis microplastic polymers carried out utilizing ATR-FTIR spectroscopy, which yielded identification various including polystyrene, silicone polymer, polyester, polyamide.

Language: Английский

---

Phytotoxic Effects of Polystyrene and Polymethyl Methacrylate Microplastics on Allium cepa Roots

Plants, Journal Year: 2023, Volume and Issue: 12(4), P. 747 - 747

Published: Feb. 7, 2023

Plastic contamination has become one of the most pressing environmental issues due to rapidly increasing production disposable plastic products, their fragmentation into smaller pieces, and long persistence in environment, which affects all living organisms, including plants. In this study, Allium cepa roots were exposed 0.01, 0.1, 1 g L−1 commercial polystyrene (PS-MPs) polymethyl methacrylate microparticles (PMMA-MPs) for 72 h. Dynamic light scattering (DLS) analyses showed high stability both types MPs ultrapure water used A. treatment. Morphometric analysis revealed no significant change root length compared control. Pyrolysis hyphenated gas chromatography mass spectrometry (Py-GC-MS) proven PS-MPs uptake by onion treatments, while PMMA-MPs recorded only upon exposure highest concentration. Neither induced any (cyto)toxic effect on growth even had a stimulating growth. ROS as well lipid protein oxidation somewhat higher PS-MP treatments corresponding concentrations PMMA-MP, neither applied damage DNA molecule assayed with Comet test. Significantly elevated activity H2O2 scavenging enzymes, catalase, peroxidases was measured after MPs. Obtained results suggest that take up more readily comparison PMMA-MPs, induce successful activation antioxidant machinery cells prevented occurrence toxic effects.

Language: Английский

---

Nanoplastics in Water: Artificial Intelligence-Assisted 4D Physicochemical Characterization and Rapid In Situ Detection

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(20), P. 8919 - 8931

Published: May 6, 2024

For the first time, we present a much-needed technology for in situ and real-time detection of nanoplastics aquatic systems. We show an artificial intelligence-assisted nanodigital in-line holographic microscopy (AI-assisted nano-DIHM) that automatically classifies nano- microplastics simultaneously from nonplastic particles within milliseconds stationary dynamic natural waters, without sample preparation. AI-assisted nano-DIHM identifies 2 1% waterborne as nano/microplastics Lake Ontario Saint Lawrence River, respectively. Nano-DIHM provides physicochemical properties single or clusters nano/microplastics, including size, shape, optical phase, perimeter, surface area, roughness, edge gradient. It distinguishes mixtures organics, inorganics, biological particles, coated heterogeneous clusters. This allows 4D tracking 3D structural spatial study nano/microplastics. Independent transmission electron microscopy, mass spectrometry, nanoparticle analysis validates data. Complementary modeling demonstrates have significantly distinct distribution patterns water, which affect their transport fate, rendering powerful tool accurate nano/microplastic life-cycle hotspot remediation.

Language: Английский

---