Unveiling the impacts of microplastic pollution on soil health: A comprehensive review

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 951, P. 175643 - 175643

Published: Aug. 22, 2024

Language: Английский

---

Molecular Weights of Dissolved Organic Matter Significantly Affect Photoaging of Microplastics

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(31), P. 13973 - 13985

Published: July 24, 2024

The fate of ubiquitous microplastics (MPs) is largely influenced by dissolved organic matter (DOM) in aquatic environments, which has garnered significant attention. reactivity DOM reported to be greatly regulated molecular weights (MWs), yet little known about the effects different MW on MP aging. Here, aging behavior polystyrene MPs (PSMPs) presence fulvic acids (FAs) and humic (HAs) was systematically investigated. Under ultraviolet (UV) illumination, O/C PSMPs aged for 96 h surged from 0.008 0.146 lower FA (FA<1kDa) treatment, suggesting PSMP However, exhibited a stronger effect facilitating photoaging than HA, can attributed fact that FA<1kDa contains more quinone phenolic moieties, demonstrating higher redox capacity. Meanwhile, compared other fractions, actively involved increase reactive species yields 50–290%, including •OH, plays key role photoaging, contributed 25% electron-donating capacity (EDC). This study lays theoretical foundation better understanding environmental MPs.

Language: Английский

---

Local infrared spectral measurement system for the inspection of independent nano-plastic particles in water-based solutions

Environmental Science Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

An analytical processing design is proposed to accumulate nano-plastics diluted in water-based solvents and evaluate their individual IR spectral properties.

Language: Английский

---

Natural Organic Matter Stabilizes Pristine Nanoplastics but Destabilizes Photochemical Weathered Nanoplastics in Monovalent Electrolyte Solutions

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Photochemical weathering and eco-corona formation through natural organic matter (NOM) adsorption play vital roles in the aggregation tendencies of nanoplastics (NPs) aquatic environments. However, it remains unclear how photochemical alters patterns NOM conformation eco-corona, subsequently affecting NPs. This study examined effect Suwannee River on kinetics pristine photoaged polystyrene (PS) NPs monovalent electrolyte solutions. The results showed that influenced which, turn, determined NP stability presence NOM. Hydrophobic components predominantly bound to hydrophobic π–π interactions, extended hydrophilic segments water hindered via steric repulsion. Conversely, hydrogen bonding facilitated binding these multiple NPs, thereby destabilizing them polymer bridging. Additionally, stabilization destabilization capacities increased with its concentration molecular weight. These findings shed light role weathered offering new perspectives environmental colloidal chemistry fate complex

Language: Английский

---

Microplastic and nanoplastic pollution: Assessing translocation, impact, and mitigation strategies in marine ecosystems

Water Environment Research, Journal Year: 2025, Volume and Issue: 97(2)

Published: Feb. 1, 2025

The widespread presence of plastic debris in marine ecosystems was first highlighted as a serious concern the United Nations Convention on Law Sea (UNCLOS) and 1972 London Convention. This realization identified pollution one major global environmental issues. Majorities are neither recycled nor incinerated, result, it eventually makes its way into lakes, rivers, oceans. Analysis water sediment worldwide indicates that microplastics nanoplastic ubiquitous soils, freshwater, ecosystems. Microplastic nanoplastics distributed throughout environments via processes such biofouling chemical leaching, contaminating both pelagic benthic species. Despite growing recognition hazards posed by nanoplastics, regulatory efforts remain hampered limited understanding their broader ecological impacts, particularly how diverse factors translate population declines ecosystem disruptions. review examines pathways microplastic pollution, interactions with other stressors climate change effects food webs. highlights urgent need for further research behavior fate which degradation product microplastics, owing to nano size they pose additional risks, unique properties, potential impacts. Studies have demonstrated smaller more toxic than larger microplastics. Additionally, serve vectors contaminants heavy metals, exacerbating toxicity. They also translocate through chains, posing health risks. While evidence impact continues grow, chronic toxicity remains poorly understood, emphasizing research, at cellular level, fully understand human health. concludes call standardized measurement methods, effective mitigation strategies, enhanced international cooperation combat this escalating threat. Future should prioritize complex between pollutants, ecosystems, ultimate goal developing holistic approaches manage mitigate pollution. PRACTITIONER POINTS: Microplastic/nanoplastic webs, affecting species Nanoplastics Nanoplastic aggregation influences distribution interactions. focus behavior, transport,

Language: Английский

---

Nanoplastics in aquatic environments: The hidden impact of aging on fate and toxicity

Environmental Chemistry and Ecotoxicology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

---

Photoaged tire wear particles hinder the transport of Pb(II) in urban soils under acid rain: Experimental and numerical Investigations

Water Research, Journal Year: 2024, Volume and Issue: 266, P. 122410 - 122410

Published: Sept. 7, 2024

Language: Английский

---

Investigation of pulmonary inflammatory responses following intratracheal instillation of and inhalation exposure to polypropylene microplastics

Particle and Fibre Toxicology, Journal Year: 2024, Volume and Issue: 21(1)

Published: Aug. 6, 2024

Microplastics have been detected in the atmosphere as well ocean, and there is concern about their biological effects lungs. We conducted a short-term inhalation exposure intratracheal instillation using rats to evaluate lung disorders related microplastics. an of polypropylene fine powder at low concentration 2 mg/m

Language: Английский

---

Dissolved Black Carbon Facilitates the Photodegradation of Microplastics via Molecular Weight-Dependent Generation of Reactive Intermediates

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 12, 2024

Photodegradation of microplastics (MPs) induced by sunlight plays a crucial role in determining their transport, fate, and impacts aquatic environments. Dissolved black carbon (DBC), originating from pyrolyzed carbon, can potentially mediate the photodegradation MPs owing to its potent photosensitization capacity. This study examined impact wood derived DBC (5 mg C/L) on polystyrene (PS) solutions under UV radiation. It revealed that PS primarily occurred at benzene ring rather than aliphatic segments due fast attack hydroxyl radical (•OH) singlet oxygen (

Language: Английский

---

Photoaging-induced variations in heteroaggregation of nanoplastics and suspended sediments in aquatic environments: a case study on nanopolystyrene

Water Research, Journal Year: 2024, Volume and Issue: 268, P. 122762 - 122762

Published: Nov. 6, 2024

Language: Английский

---