The effects of microplastics on heavy metals bioavailability in soils: a meta-analysis

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 460, P. 132369 - 132369

Published: Aug. 22, 2023

Language: Английский

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Microplastics in rivers along an urban-rural gradient in an urban agglomeration: Correlation with land use, potential sources and pathways

Environmental Pollution, Journal Year: 2023, Volume and Issue: 321, P. 121096 - 121096

Published: Jan. 16, 2023

Microplastics are ubiquitous and affect all environments, including rivers. In recent years the number of studies about microplastics in rivers has strongly increased. But still many questions exist regarding sources, pathways, role land use patterns. this study relationship between abundance anthropogenic factors (population density, urbanization, types), as well potential storm sewers pathways tributaries Wu River Taichung, central Taiwan, were studied. Two river catchments Dali studied greater detail to investigate influence on along an urban-rural gradient, observe change transition from rural urban areas. Samples taken 41 different locations areas using a manta net with mesh size 0.3 mm. Results show abundances ranging 0 pcs/m³ unpopulated up 230 densely populated centers, positively correlated population density. Remarkably, sharp increase was observed at areas, which coincides appearance sewers. Land analysis revealed that correlates industrial, residential traffic catchment negatively forest Source for likely commercial Furthermore, results correlations density or patterns gradients not trivial. Strength can depend local how developed. Absence need be considered carefully, existing might masked by above-mentioned factors.

Language: Английский

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Plastic Pollution in Agriculture as a Threat to Food Security, the Ecosystem, and the Environment: An Overview

Agronomy, Journal Year: 2024, Volume and Issue: 14(3), P. 548 - 548

Published: March 7, 2024

Plastic products in plant production and protection help farmers increase crop production, enhance food quality, reduce global water use their environmental footprint. Simultaneously, plastic has emerged as a critical ecological issue recent years, its pollution significantly impacted soil, water, plants. Thus, this review examines the multifaceted problems of agriculture risk to security, ecosystem, environment. The study’s objective was present most information on using different agriculture, sources pollution, advantages drawbacks products, strategies for mitigating agriculture. Furthermore, after examining current applications, benefits, adverse effects, risks plants, environment, we addressed requirements technological advancements, regulations, social processes that could contribute our ecosystems. We identified pathways toward more sustainable plastics discussed future research directions.

Language: Английский

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Microplastics discharged from urban drainage system: Prominent contribution of sewer overflow pollution

Water Research, Journal Year: 2023, Volume and Issue: 236, P. 119976 - 119976

Published: April 18, 2023

Language: Английский

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Spatio-temporal distribution of microplastics in water and sediment samples of the Plankenburg river, Western Cape, South Africa

Environmental Pollution, Journal Year: 2023, Volume and Issue: 323, P. 121303 - 121303

Published: Feb. 15, 2023

Microplastic (MPs) pollution has become a subject of environmental concern due to its wide ubiquity in the environment. Microplastics are possible sources other hazardous chemicals aquatic organisms their composition and sorption properties. In this study, MPs occurrence water sediment samples Plankenburg River, Western Cape, South Africa was investigated. The physicochemical characterization river done onsite. 30 L were collected filtered 10 triplicates through 250 μm mesh onsite using metal bucket. An additional 12 sample 4 20 laboratory. extraction from laboratory by density separation. Sediment also at selected sites, oven-dried microplastics Sampling conducted over four seasons - spring, summer, autumn, winter. classified visual observation Fourier Transform Infrared Spectroscopy (FTIR-ATR). seasonal distribution surface varied across all sites. However, spring had highest (5.13 ± 6.62 MP/L) least, autumn (1.52 2.54 MP/L). observed (1587.50 599.32 MP/kg). Fibres most dominant microplastic particle type (shape), with size range 500-1000 different infrared spectroscopic analysis confirmed polymer be polyethylene. This study provides an understanding River system gives baseline for future monitoring assessment African freshwater systems.

Language: Английский

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Sampling, separation, and characterization methodology for quantification of microplastic from the environment

Journal of Hazardous Materials Advances, Journal Year: 2024, Volume and Issue: 14, P. 100416 - 100416

Published: Feb. 27, 2024

As millions of tonnes plastics wind up in the environment, plastic pollution is a severe issue that worsens with time. In addition to primary particles, large items are fragmented due ultraviolet radiation, degradation, and other environmental causes, resulting minuscule compounds, known as microplastics or nanoplastics. They adsorb hazardous contaminants easily get absorbed by organisms, for example, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, heavy metals adhered microplastic surfaces their tiny size surface area. Studies on toxicity fate crucial light these challenges, but effectiveness depends sampling procedure, sample preparation, characterization, analysis, quantification techniques. The standard methods characterization performed using Fourier transform infrared resonance, Raman Spectroscopy, pyrolysis Gas Chromatography Mass Spectrometry. Unfortunately, none techniques can achieve in-situ non-invasive characterization. These processes complex, non-uniform across studies, different specific domains such soil/sediment, water groundwater, biota, atmosphere. Thus, current study highlights methodology being used sampling, analysis from solid, aqueous, air, biota samples. This review paper also specifies tool concentration types Future studies should prioritize development standardized protocols ensure comparability diverse ecosystems. Additionally, employing advanced analytical collaborating interdisciplinary fields enhance accuracy reliability separation methods.

Language: Английский

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Microplastics monitoring in freshwater systems: A review of global efforts, knowledge gaps, and research priorities

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 477, P. 135329 - 135329

Published: July 27, 2024

Language: Английский

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Temporal and spatial variation of microplastics in Baotou section of Yellow River, China

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 338, P. 117803 - 117803

Published: April 5, 2023

Freshwater rivers play the key role in providing drinking water sources and building bridge of oceans lands. Hence, environmental pollutants can be transferred into through a treatment process transported land-based microplastics ocean. Microplastics are considered new pollutant that is becoming threat to freshwater ecosystems. The present study investigated temporal spatial variation abundance their characteristics occurrence surface water, sediment soil samples Baotou section Yellow River China March 2021 September 2021. According LDIR analysis, average abundances wet season (surface 2510.83 ± 2971.27n/L, 6166.67 2914.56n/kg) were higher than dry season(surface 432.5 240.54n/L, 3766.67 1625.63n/kg), particularly being significant difference seasons water. predominant polymer types (PBS PET during season, PP season) demonstrated could attributed combined effect regional precipitation, fishing activities improper disposal plastic waste. And results showed was river south side other sampling sites, revealing differences burden at different sites. Moreover, it worth noting large amount PAM detected sediments soil, but not biodegradable plastics PBS PLA also River. It very useful information for evaluating impacts ecological effects degradable compared traditional after implementation policy future. Thus, this provided insights temporal-spatial an urban raised management awareness long-term safety by microplastics.

Language: Английский

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Microplastic occurrence and ecological risk assessment in the eight outlets of the Pearl River Estuary, a new insight into the riverine microplastic input to the northern South China Sea

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 189, P. 114719 - 114719

Published: Feb. 21, 2023

Language: Английский

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Hydro-geomorphic perspectives on microplastic distribution in freshwater river systems: A critical review

Water Research, Journal Year: 2023, Volume and Issue: 245, P. 120567 - 120567

Published: Sept. 4, 2023

Freshwater river systems are commonly defined as the main transport paths of microplastics (MP) from land into seas. A shift in research interest oceans to rivers can be observed, a large number i) case studies, ii) review papers and iii) experimental studies this field have been published recently. Still, often lack an in-depth consideration quantification, units mostly based on item numbers. Spatiotemporal aspects neglected. Transport linking MP sources sinks environment insufficiently understood only recently awareness increased that sustainable management pollution cannot addressed without sound knowledge water- sediment-driven transport. Within paper, we therefore reviewed 92 case-studies, with special focus spatiotemporal gathered compared global load-estimation data these studies. We then outlined key processes determining movement basis existing laboratory experiments theoretical approaches. procedure effectively compare water column riverine sediments was developed extensive MP-dataset German waterways suspended sediment concentrations (SSC) nearest monitoring stations shipping authority. Our analysis indicates relating samples SSC reduces stated difference between bed relativizes importance beds major "MP sink". As for quantification fluxes, use masses unit is crucial, applied approach convert items help power-law distribution MP-particle size, triangular distributions form-ratios polymer densities. An evaluation own, dataset MP-particles showed reasonable results. Therefore, translated load numbers mass values further analysis. Values were within range, especially when considering respective catchment size each at sampling site.

Language: Английский

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