Microplastics regulate soil microbial activities: Evidence from catalase, dehydrogenase, and fluorescein diacetate hydrolase

Environmental Research, Journal Year: 2024, Volume and Issue: 263, P. 120064 - 120064

Published: Sept. 25, 2024

Language: Английский

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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

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Treated wastewater disturb the distributions of microplastics in their receiving watersheds

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 374, P. 124096 - 124096

Published: Jan. 10, 2025

Language: Английский

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The Hidden Threat of Microplastics in Desert Environments: Environmental Impact, Challenges, and Response Measures

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 1897 - 1897

Published: Feb. 24, 2025

Microplastic (MP) pollution has garnered widespread attention because of its negative effects, even in the most remote areas Earth. However, research on MP deposition deserts, which account for 45% Earth’s total land area, remains limited. Desert environments, characterized by large temperature fluctuations, high ultraviolet radiation, and strong winds, accelerate degradation, aging, wind erosion, deposition, migration microplastics (MPs). In desert regions, MPs originate primarily from human activities, such as tourism waste, agricultural mulch residues, artificial water storage systems. Additionally, transport, entrainment, atmospheric wildlife further influence abundance these areas. As soils intensifies, it negatively affects local microbial activity, crop yields, reproduction rare wildlife, climate. response, mitigation strategies, biodegradation, organic alternatives, wasteland transformation, have been proposed. challenges remain, including a lack specific data limited economic incentives environmental protection measures. Drawing existing research, this paper provides comprehensive summary main sources areas; factors their fate; detrimental effects ecosystems (including microorganisms, animals, plants, climate); current response Valuable insights are extracted available data, highlighting status offering useful reference future area.

Language: Английский

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Microplastics in the Typical Mulched Farmland of Sichuan Province: Characteristics That Vary Across Farming Scales and the Risk Significantly Contributed by Priority Polymers

Sustainability, Journal Year: 2025, Volume and Issue: 17(8), P. 3516 - 3516

Published: April 14, 2025

Microplastics (MPs) in agricultural soils pose risks to human health their potential accumulation along the food chain, and characteristics require further understanding implement targeted measures. This study investigated MP typical mulching from different farming scales Sichuan Province, which is one of China’s key regions, it also innovatively measured ecological risk by incorporating size into assessments. The sites showed average microplastic abundances 19696.81 ± 13226.89, these were dominated small-sized ethylene–propylene copolymer (E/P), polypropylene (PP), polyethylene (PE) particles yellow-to-brown black-to-shallow-gray soil. Size-considered evaluation suggested that most at a high level risk. It was found pollution varies with scales. Larger-scale primarily received MPs plastic mulching, while smaller-scale likely affected range non-agricultural sources. assessment significant contributions polyamide (PA) polyphenylene sulfide (PPS). These results indicate environmental management strategies should tailor source control measures according prioritize high-risk polymers, as well evaluations include “size” “pollution load” “chemical composition” better reflect impact on ecosystems.

Language: Английский

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Recent Advances on Microplastics and Nanoplastics Impacts to the United Nations’ Sustainable Development Goal 2—Zero Hunger: a Systematic Review

Water Air & Soil Pollution, Journal Year: 2024, Volume and Issue: 235(12)

Published: Nov. 12, 2024

Language: Английский

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