Microplastics in the seagrass ecosystems: A critical review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 902, P. 166152 - 166152

Published: Aug. 9, 2023

Language: Английский

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Investigation and comparative analysis of ecological risk for heavy metals in sediment and surface water in east coast estuaries of India

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 190, P. 114894 - 114894

Published: April 3, 2023

Language: Английский

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ROS-dependent degeneration of human neurons induced by environmentally relevant levels of micro- and nanoplastics of diverse shapes and forms

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 134017 - 134017

Published: March 13, 2024

Our study explores the pressing issue of micro- and nanoplastics (MNPs) inhalation their subsequent penetration into brain, highlighting a significant environmental health concern. We demonstrate that MNPs can indeed penetrate murine warranting further investigation neurotoxic effects in humans. then proceed to test impact at environmentally relevant concentrations, with focusing on variations size shape. findings reveal these induce oxidative stress, cytotoxicity, neurodegeneration human neurons, cortical neurons being more susceptible than nociceptors. Furthermore, we examine role biofilms MNPs, demonstrating serve as vehicle for pathogenic significantly exacerbate effects. This sequence investigations reveals minimal accumulation cause stress risking brain highlights need understand neurological consequences inhaling MNPs. Overall, our developed vitro testing battery has significance elucidating factors associated pathological mechanisms neurons.

Language: Английский

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Microplastic shape influences fate in vegetated wetlands

Environmental Pollution, Journal Year: 2024, Volume and Issue: 345, P. 123492 - 123492

Published: Feb. 3, 2024

Coastal areas are prone to plastic accumulation due their proximity land based sources. vegetated habitats (e.g., seagrasses, saltmarshes, mangroves) provide a myriad of ecosystem functions, such as erosion protection, habitat refuge, and carbon storage. The biological physical factors that underlie these functions may an additional benefit: trapping marine microplastics. While microplastics occurrence in coastal sediments is well documented, there conflicting evidence on whether the presence vegetation enhances relative bare sites influence microplastic remain understudied. We investigated how structure type influences simulated wetland. Through flume experiment, we measured efficiency branched grassy tested array differ shape, size, polymer. observed did not affect number trapped but location deposition. Microplastic rather than polymer, was dominant factor determining were retained sediment or adhered canopy. Across canopy, microfibre concentrations decreased from leading edge interior which suggests even small-scale, has filtering effect. outcome this study enriches our understanding sink differences among informs where they most likely accumulate within biogenic

Language: Английский

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The under-investigated plastic threat on seagrasses worldwide: a comprehensive review

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(6), P. 8341 - 8353

Published: Jan. 3, 2024

Language: Английский

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A novel high-throughput analytical method to quantify microplastics in water by flow cytometry

Green Analytical Chemistry, Journal Year: 2023, Volume and Issue: 5, P. 100057 - 100057

Published: April 22, 2023

Microplastics (MPs) are pervasive contaminants with unclear toxicological impacts. Current research on MP pollution relies low-throughput methodologies, which time-consuming and cannot directly measure concentration in suspensions. This study presents a qualitative quantitative flow cytometry-based method for analysing MPs water, offering faster more sustainable alternative. The involves density separation to remove interfering particles, UV irradiation eliminate microorganisms, filtration particles above 100 µm. sensitivity of the different types MPs, such as polystyrene (PS), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyamide (PA) microbeads, ranges from 2 µg/L 1 mg/L. For these good linearity was found matrix-matched calibration where most concentrated standard 5 mg/L (R2 0.9820–0.9989) although linear range can be larger (e.g. 42 mg MP/L PS microbeads). repeatability reproducibility model were <17.0% 8.5%, respectively. sample treatment consisting pretreatment, when carried out independently, led 95.0% 93.4% recoveries. overall trueness optimized various sizes compositions microbeads is about 97%, according validation supported by microscopy analysis. substitute traditional analytical approach based counting microscopy.

Language: Английский

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Seasonality, wind and characteristics of plastic polymer accumulation on Western Australia's south coast

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 214, P. 117775 - 117775

Published: March 8, 2025

Global studies have investigated plastic polymer distribution, but few the drivers of deposition. Little work has been done in Australia, particularly on Western Australian beaches. In 2018, Wow Ecotours collected daily samples from Shelley Beach south coast Australia. A subset 873 items was taken five different density categories, and their types were identified using Raman Spectrometry. The most abundant high-density polyethylene 45 %, followed by polypropylene low-density polyethylene, with 33.5 % 14 respectively. Onshore wind predominant factor driving accumulation beach, this did not vary significantly between polymers. spring season significant fluctuations length, mass, area samples.

Language: Английский

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Microplastics contamination detection in Swan-Canning Estuary via Raman spectroscopy: Insights from shoreline sampling

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

Plastic pollution along the shores of Swan-Canning Estuary (Swan and Canning Rivers) in Perth, Australia is an increasing concern, with a survey by Western Australian Government reporting average 151 plastic pieces per square meter Estuary. This study examines origins, distribution, concentrations microplastics (MPs) to inform effective mitigation strategies. Water samples were collected from 3 key locations Estuary, including Matilda Bay, Deep Point Reserve, Bardon Park. Sampling was conducted over 14 runs, combination 5.6 mm (3.5 mesh) 0.10mm (150 or 0.074 (200 sieves used capture effectively. Approximately 1000 2000 litres water processed site through sieving chemical treatments isolate MPs, which subsequently analysed using Raman spectroscopy. The results revealed highest MP concentration at followed Park no MPs detected other sites. Seasonal variations noted, higher during winter compared summer, necessitating further research confirm this trend. Polypropylene, commonly associated fisheries marine activities, emerged as most prevalent species. demonstrates effectiveness spectroscopy for microplastic detection identifies hotspots Swan Rivers. findings offer valuable insights targeted remediation efforts support broader initiatives mitigate urban waterways.

Language: Английский

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Retention of microplastics in Halophila decipiens seagrass meadows

Marine Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 107208 - 107208

Published: May 1, 2025

Language: Английский

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The power of Posidonia oceanica meadows to retain microplastics and the consequences on associated macrofaunal benthic communities

Environmental Pollution, Journal Year: 2024, Volume and Issue: 348, P. 123814 - 123814

Published: March 16, 2024

In the coastal environment, a large amount of microplastics (MPs) can accumulate in sediments seagrass beds. However, potential impact these pollutants have on seagrasses and associated organisms is currently unknown. this study, we investigated differences MPs abundance composition (i.e., shape, colour polymer type) marine collected at different depths (-5 m, -15 -20 m) two sites characterized by presence Posidonia oceanica meadows one unvegetated site. vegetated sites, sediment samples were respectively above below upper lower limits meadow m m), out P. meadow, central portion (-15 m). By focusing part if structural features (i.e. shoots density leaf surface) affect retained within underlying these, turn, benthic communities. Results showed that number was higher than found site, showing also composition. particular, observed particles more abundant (at - 15 compared to other depths, sediment, with dominance transparent fragments polypropylene (PP). We entrapment accentuated density, while surface did not appear any effect. Both richness macrofauna rhizomes be negatively influenced sediment. Overall, study increases knowledge risks accumulation important habitats such as meadows.

Language: Английский

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