The Role of Estuarine Wetlands (Saltmarshes) in Sediment Microplastics Retention

Water, Journal Year: 2023, Volume and Issue: 15(7), P. 1382 - 1382

Published: April 3, 2023

Concerns regarding plastic pollution, especially microplastics, have increased, as they can be present in different environmental compartments, including estuarine areas and saltmarshes. Although saltmarshes are highly vulnerable to human activities pressures, the ability trap/retain contaminants their vegetated sediments. However, there is still little information role of microplastic retention. Thus, study aims investigate capability an saltmarsh trap microplastics by comparing concentrations (saltmarsh) non-vegetated Microplastic content from sediment (vegetated non-vegetated) samples collected at sampling sites Lima River estuary was estimated using previously optimised extraction protocols, observed particles were then characterised accordingly size, colour, shape, polymer (by FTIR). Water also analysed for complement MPs characterisation within area. Microplastics detected all samples, with fibres being most common type found, followed fragments/particles. Overall, sediments, those species Juncus maritimus, presented a higher number items. These results indicated that tend trapped supporting fact significant influence on transport, distribution, accumulation areas.

Language: Английский

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A review of methods for modeling microplastic transport in the marine environments

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 193, P. 115136 - 115136

Published: June 15, 2023

Language: Английский

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Occurrence of microplastics and metals in European seabass produced in different aquaculture systems: Implications for human exposure, risk, and food safety

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 929, P. 172535 - 172535

Published: April 18, 2024

Microplastics (MPs) are emerging contaminants of increasing concern as they may cause adverse effects and carry other contaminants, which potentially compromise human health. Despite occurring in aquatic ecosystems worldwide, the knowledge about MP presence different aquaculture systems their potential impact on seafood products is still limited. This study aimed to determine levels MPs water, feed, European seabass (Dicentrarchus labrax) from three relevant estimate exposure metals through consumption. The recirculating system (RAS) had highest occurrence water feed. followed system's with RAS-farmed fish presenting load, both gastrointestinal tract (GIT) muscle, by pond-, cage-farmed fish. MPs' characteristics across samples remained consistent, predominant recovered particles falling within size range. were visually characterized chemically identified micro-Fourier Transform Infrared Spectroscopy (μFTIR). Most these fibres composed man-made cellulose PET. GIT significantly higher than muscle for pond- fish, bioconcentration factors >1 indicated farmed seabass. Metal concentrations below permissible limits, posing low intake risks consumers according available health-based guidance values estimated dietary scenarios.

Language: Английский

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Microplastic aquatic impacts included in Life Cycle Assessment

Resources Conservation and Recycling, Journal Year: 2024, Volume and Issue: 209, P. 107787 - 107787

Published: June 26, 2024

Although Life Cycle Impact Assessment (LCIA) methods assess a wide range of environmental impacts, ecological impacts plastic pollution are not commonly included. Here, characterization factors Polypropylene (PP), Low density polyethylene (LDPE) and Polyethylene Terephthalate (PET) microplastics were assessed. Fate was assessed through the multimedia fate model Simplebox4Plastics. Ecological effects based on species sensitivity distributions. Macroplastic included though conversion fraction. The in ReCipe2016 method applied to two consumer packaging films show relevance including LCAs. Plastic losses using material flow analysis. freshwater marine ecotoxicity midpoint indicators dominated by whilst these limited ecosystem quality as endpoint. Extending this methodology additional polymers methodological developments will help obtain more complete picture LCA identify effective mitigation options.

Language: Английский

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Microplastic contamination in marine mussels from the Atlantic coast of North Portugal and human risk of microplastic intake through mussel consumption

Environmental Pollution, Journal Year: 2024, Volume and Issue: 352, P. 124133 - 124133

Published: May 14, 2024

Microplastic (MP) pollution has become a global concern due to its potential impacts on the environment, ecosystem services and human health. The goals of present study were document MP contamination in wild specimens Mytilus galloprovincialis sampled along Atlantic coast North region Portugal continental (NW Portuguese coast), estimate risk intake (HRI) through consumption local mussels as seafood. Mussels collected at four sampling sites NW (40 per site), whole soft body each mussel was analysed for content. HRI estimates based mean items wet weight tissue (MP/g) habits. A total 132 recovered from mussels. had diverse sizes (98 2690 μm) colours. most common shapes fibres (39%) pellets (36%). Five polymers identified MP: polyethylene (50%), polystyrene (15%), poly(ethylene vinyl acetate) (14%), polyamide (12%) polypropylene (9%). From 160 mussels, 55% MP. standard error ranged 0.206 ± 0.067 0.709 0.095 MP/g. For consumers study, decreasing order is MOL > CAB CAR EST. Compared other areas varied habits, relatively low.

Language: Английский

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Spatial and temporal variations of microplastics in the lower Chao Phraya River, Thailand: an investigation during the COVID-19 pandemic period

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Development of simplified characterization factors for the assessment of expanded polystyrene and tire wear microplastic emissions applied in a food container life cycle assessment

Journal of Industrial Ecology, Journal Year: 2022, Volume and Issue: 26(6), P. 1882 - 1894

Published: March 23, 2022

Abstract To date, life cycle assessment (LCA) does not include a methodology for assessing the impacts of plastic litter leaked to environment. This limits applicability LCA as tool compare potential single‐use plastics and their alternatives on ecosystem quality human health. As contribution tackle this issue, work proposes simplified fate characterization factors (CFs) modeling two types microplastics—expanded polystyrene tire road wear particles—in marine In terms mechanisms, explores different sedimentation, degradation, fragmentation rate scenarios, based literature values expert estimates. Whereas expanded is sensitive fragmentation, sedimentation particles primarily sedimentation. The are integrated into CFs using an existing exposure effect factor microplastics in aquatic environments. Since studied show important differences, these results reveal need developing polymer‐specific CFs. Finally, tested case study on‐the‐go food containers (one plastic, compostable alternatives, one reusable plate). Depending scenario, range from barely noticeable more than doubling total damage quality, compared no impact assessment. high uncertainty encourages further research microplastic detail.

Language: Английский

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Generating environmental sampling and testing data for micro- and nanoplastics for use in life cycle impact assessment

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 859, P. 160038 - 160038

Published: Nov. 14, 2022

Ongoing efforts focus on quantifying plastic pollution and describing estimating the related magnitude of exposure impacts human environmental health. Data gathered during such work usually follows a receptor perspective. However, Life Cycle Assessment (LCA) represents an emitter This study examines existing data gathering reporting approaches for field laboratory studies micro- nanoplastics (MNPs) effects relevant to LCA inputs. The outcomes indicate that perspective do not typically provide suitable or sufficiently harmonised data. Improved design is needed in sampling, testing recording results using harmonised, validated comparable methods, with more comprehensive We propose three-level set requirements increase potential models utilise receptor-oriented studies. show which purpose can be used as inputs LCA, particularly life cycle impact assessment (LCIA) methods. Implementing these will facilitate proper integration losses from activity (e.g. litter) into LCA. Then, emissions eventually connected compared other issues anthropogenic activities.

Language: Английский

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Entrainment and Enrichment of Microplastics in Ice Formation Processes: Implications for the Transport of Microplastics in Cold Regions

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(8), P. 3176 - 3186

Published: Feb. 13, 2023

Sea ice can serve as a temporary sink for microplastics (MPs), and thus, it too function secondary source of transport medium MPs. This study aimed to explore the effect various MP properties environmental characteristics on entrainment enrichment MPs in under varying turbulence conditions. It was found that high rotation speed freshwater distinctively enhanced hydrophobic ice, this being attributable combined effects frazil air bubbles. The nature these caused them be attracted water/air or water/ice interface. However, saline water, inhibited all types study. crystals formed loose structure water instead congealing, allowed exchange between leading rapid expulsion from ice. factors increased calm compared freshwater. results revealed critical pathways affecting their fate cold regions.

Language: Английский

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Scavenging of polystyrene microplastics by sediment particles in both turbulent and calm aquatic environments

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 884, P. 163720 - 163720

Published: May 1, 2023

Microplastic particles (MP) are emerging pollutants ubiquitously distributed in all aquatic environments, remaining suspension the water column or deposited sediment beds. MP suspended along with other whom they might interact. The current study presents results of slow-settling (Polystyrene) scavenged by fast-settling particles. covers a wide range salinities (from freshwater to saltwater) and shear rates calm mixing ecosystems). In regions, scavenging produces greatest removal from (42 % suspension), thus increasing pollution contrast, turbulence reduces settling (72 remain causing more than regions. Although salinity increased buoyancy MP, has been found overcome increase buoyancy. Consequently, transported bed independently on salinity. Therefore hotspots contamination environments need consider both interaction local column.

Language: Английский

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