Unveiling microplastics pollution in a subtropical rural recreational lake: A novel insight

Environmental Research, Год журнала: 2024, Номер 250, С. 118543 - 118543

Опубликована: Фев. 26, 2024

Язык: Английский

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Interpretable machine learning reveals transport of aged microplastics in porous media: Multiple factors co-effect

Water Research, Год журнала: 2025, Номер 274, С. 123129 - 123129

Опубликована: Янв. 12, 2025

Язык: Английский

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Characteristics of microplastics and their abundance impacts on microbial structure and function in agricultural soils of remote areas in West China

Environmental Pollution, Год журнала: 2024, Номер 360, С. 124630 - 124630

Опубликована: Июль 28, 2024

Язык: Английский

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Vertical distribution of microplastics in an agricultural soil after long-term treatment with sewage sludge and mineral fertiliser

Environmental Pollution, Год журнала: 2024, Номер 356, С. 124343 - 124343

Опубликована: Июнь 7, 2024

Sewage sludge applications release contaminants to agricultural soils, such as potentially toxic metals and microplastics (MPs). However, factors determining the subsequent mobility of MPs in long-term field conditions are poorly understood. This study aimed understand vertical distribution soils amended with sewage comparison conventional mineral fertiliser for 24 years. The depth-dependent MP mass number concentrations, plastic types, sizes shapes were compared organic carbon provide insights into transport-limiting factors. Polyethylene, polypropylene polystyrene concentrations screened down 90 cm depth via pyrolysis-gas chromatography/mass spectrometry. additional sizes, analysed 40 using micro-Fourier transform-infrared imaging. Across all depths, numbers twice 8 times higher when was applied, a share textile-related plastics, more fibres on average larger particles than soil receiving fertiliser. Transport beyond plough layer (0–20 cm) is often assumed negligible, but substantial (42 %) (52 detected 70 sludge-amended soils. initial mobilization shape- size-dependent, because fractions fragmental-shaped relatively small increased directly below layer, not at greater depths. sharp decline total between 20 resembled that matter suggesting similar transport limitations. We hypothesize effect management, ploughing, compactness by bioturbation macropores drives over long time scales. Risk assessment should therefore account considerable displacement avoid underestimating exposure.

Язык: Английский

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Parameters of labile organic carbon as the indicators of the stability of soil organic matter under different land use

Soil and Water Research, Год журнала: 2025, Номер unknown

Опубликована: Янв. 3, 2025

The labile fractions of organic carbon (OC), which are a reflection the properties soil and its use, appear to be suitable parameters for their use as indicators. aim this study was determine reliable relatively simple indicators detecting chemical physical stabilizations OC, would respond sensitively land use. includes forest ecosystem (FE) agroecosystem (AE) with different tillage intensities (reduced tillage, RT conventional CT) on real farms. Parameters C N were tested. For depth < 0.1 m in FE, hot water extractable (HWEOC) stabilization nitrogen (N_L) most Higher values HWEOC indicate OC by decreasing decomposition, pH or increasing carbonates, recalcitrant fractions, higher N_L incorporation into silt fraction larger macro-aggregates. In AE RT, these pool index (CPI) lability (LI_C) stabilization. CPI LI_C formation size-optimal dry-sieved (DSA; 1–3 mm) wet-sieved (WSA; 1–2 aggregates. CT, it N_L. Its point through alkaline cations, size-fraction > 0.01 mm DSA (1–3 mm). 0.3 AE, C_L (for RT), value points clay CT), indicates conditions acidification.

Язык: Английский

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Vertical distribution of microplastics in soil affects plant response to microplastics.

NanoImpact, Год журнала: 2025, Номер unknown, С. 100557 - 100557

Опубликована: Апрель 1, 2025

Язык: 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, Год журнала: 2025, Номер 17(8), С. 3516 - 3516

Опубликована: Апрель 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.

Язык: Английский

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Modeling microplastic transport through porous media: challenges arising from dynamic transport behavior

Journal of Hazardous Materials, Год журнала: 2024, Номер 484, С. 136728 - 136728

Опубликована: Ноя. 30, 2024

Язык: Английский

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Effects of Conventional Non-Biodegradable Film-Derived Microplastics and New Biodegradable Film-Derived Microplastics on Soil Properties and Microorganisms after Entering Sub-Surface Soil

Agronomy, Год журнала: 2024, Номер 14(4), С. 753 - 753

Опубликована: Апрель 5, 2024

Plastic film mulching, widely used in agriculture, leads to microplastic (MP) pollution soils. While biodegradable polybutylene adipate terephthalate (PBAT) films may offer a solution, their impacts on subsurface soils and microorganisms remain unclear. To investigate the effects of conventional non-biodegradable polyethylene (PE) PBAT MPs properties sub-surface microbial communities, were added at varying doses field experiment incubated for 160 days. Physicochemical characteristics, nutrient dynamics, composition, diversity, networks analyzed using standard techniques 16S rRNA/ITS gene sequencing. Correlations between soil microbes assessed. Both MP types significantly altered with PBAT-MP elevating pH levels available phosphorus potassium more than PE-MP. Microbial composition shifts occurred, low-addition promoting plastic-degrading genera. The assessment α/β-diversity indicated that predominantly influenced fungi while PE-MP impacted bacteria. An examination co-occurrence highlighted primarily disrupted fungal interactions, whereas streamlined network complexity. Correlation analyses revealed promoted diversity/network resilience correlating nutrients. native soil/microbe relationships. exert greater, yet unknown, over time through its biodegradation into newer smaller fragments. Future research needs integrate multi-omics stable isotope science elucidate deep mechanistic degraded film-derived ecological functions biogeochemical cycles. Attention should also be paid long-term accumulation/transport agricultural Overall, this work deepens impact understanding from plastic ecology. Furthermore, it provides theoretical foundation managing ‘white pollution’ film-covered farmlands arid semi-arid regions China.

Язык: Английский

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Vertical distribution of microplastics in urban farmland soils. A case of Mabibo Bonde la Mchicha farm, Dar es Salaam, Tanzania

Environmental Advances, Год журнала: 2024, Номер 17, С. 100558 - 100558

Опубликована: Июнь 15, 2024

The rise of microplastics (MPs) is a global concern jeopardizing environmental safety. Initial studies have extensively concentrated on aquatic ecosystems, leaving their presence in terrestrial environments unknown. Thus, this study was carried out to investigate the vertical distribution MPs farmland soils Mabibo Bonde la Mchicha Farm (MBMF), Dar es Salaam. 39 soil samples collected from MBMF were investigated using Stereomicroscope and QATR-S FTIR. Results herein showed that found all different depths up 15 cm deep, ranging 4.8 82.2 items g-1 dry weight (DW). There statistically significant difference MP abundance between 0–5, 5–10 10–15 layers (P = 0.033) at ὰ 0.05. observations revealed by observed colors, which white (36.5 %) most frequently observed, followed blue (21.4 %), brown (20.2 black (12.8 red (9 %). Fibers (49.7 fragments (32.9 films (17.3 dominant shapes. Polyethylene (PE) polypropylene (PP) polymers constituting 33 % each, polyethylene terephthalate (PET) 11 %, high-density (HDPE) 8 polyester (PES) 7 polyamide (PA) polyvinyl chloride (PVC) 1 %. It can be inferred PE PP exhibited greater mobility. However, PA PVC only topsoil layer. This reveals MPs' occurrence transfer urban

Язык: Английский

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