Significant microplastic accumulation and burial in the intertidal sedimentary environments of the Yellow River Delta

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 487, P. 137134 - 137134

Published: Jan. 5, 2025

Language: Английский

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Quantitative study of microplastic degradation in urban hydrosystems: comparing in-situ environmentally aged microplastics vs. artificially aged materials generated via accelerated photo-oxidation

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 486, P. 137087 - 137087

Published: Jan. 1, 2025

Language: Английский

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Quantification, characterization and risk assessment of microplastics from five major estuaries along the northern Bay of Bengal coast

Environmental Pollution, Journal Year: 2023, Volume and Issue: 342, P. 123036 - 123036

Published: Nov. 28, 2023

Microplastics (MPs) as hazardous contaminants has drawn the rapid attention of general public due to their omnipresence and adverse impacts on ecosystems human health. Despite this, understanding MPs contamination levels in estuarine along Bay Bengal coast remains very limited. This research focused presence, spatial distribution, morpho-chemical characteristics ecological implications water sediment from five key estuaries (Meghna, Karnaphuli, Matamuhuri, Bakkhali, Naf rivers) within delta. Out estuaries, Meghna exhibited least amount both surface (150.00 ± 65.62 items/m3) (30.56 9.34 items/kg). In contrast, highest occurrence was recorded Karnaphuli river (350.00 69.22 Matamuhuri (118.33 26.81 ANOVA indicated a statistically significant distinction (p < 0.01) among examined estuaries. Most identified were fibers <0.5 mm size samples. Transparent dominant (42.28%) (45.22%). Besides violet, red, blue, pink green colored also observed. Various polymer types, including PE, PP, PET, PS, Nylon, EVA, ABS, detected, with PE being one. Based risk index (PHI), classified hazard level V, signifying severe MP contamination. However, potential (RI), pollution load (PLI) moderate levels. study offers initial insights into caused by major delta, which policymakers can utilize implement suitable management strategies.

Language: Английский

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Microplastics: A potential proxy for tracing extreme flood events in estuarine environments

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 918, P. 170554 - 170554

Published: Feb. 2, 2024

Language: Английский

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Spatio-temporal variation and ecological risk assessment of microplastics along the touristic beaches of a mediterranean coast transect (Valencia province, East Spain)

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 354, P. 120315 - 120315

Published: Feb. 13, 2024

Annually, the Mediterranean region attracts around one-third of global coastal tourism, which is acknowledged as a substantial contributor to plastic pollution. Coastal municipalities mitigate this through periodic sand and shore cleaning. However, efficacy these measures remains uncertain. In study, occurrence MPs (10 μm-5 mm) in from seven different, regularly cleaned, touristic beaches coastline Valencia province (E Spain) was assessed. Two different sampling campaigns were performed winter summer (2022) compare results understand influence high activity, well as, efficiency taken against The methodology used designed specifically for matrix employed density separation using Sediment Microplastic Isolation (SMI) Unit. addition conventional visual inspection ATR-FTIR, automatic quantification identification polymers lower size by μFTIR. average concentration (339 ± 92 MP kg−1 stereomicroscopy 339 189 μFTIR) significantly higher than (71 143 85 kg−1) (p < 0.05). combination analytical tools provides comprehensive information about present beach sand. Fibers most abundant form MPs, while analyzed polyethylene (PE) halogenated polystyrene (Cl-PS Br-PS) with food packaging, swimming equipment fishing nets being their probable sources. Ecological risk assessment Pollution Load Index (PLI), Hazardous (HI) Risk Quotient (RQ), indicating potential that ranges moderate depending on applied approach.

Language: Английский

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Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Frontiers in Environmental Science, Journal Year: 2023, Volume and Issue: 11

Published: Sept. 14, 2023

Microplastics (MPs), an emerging pollutant, have drawn attention on a global scale and been found in various ecosystems. Nevertheless, there is currently lack of information regarding the contamination levels MPs aquaculture ponds worldwide. In this study, sediment water samples were collected from five types fish ponds, namely, homestead (S1), commercial (S2), near residential area (S3), small-scale industrial (S4), large-scale (S5), to identify, characterize, assess risk MPs. Stereomicroscopic Fourier-transform infrared (FTIR) spectroscopy analyses revealed that ranged 3.33 item/kg 136.67 16.6 item/L 100 samples. Overall, abundance was extremely high S5, followed by S4, S2, S3, S1, which clearly showed increased with intensity human activities. The both significant differences ( p &lt; 0.05) within between as well comparison concentrations surpassed those noted different nations. majority consisted fragments films Furthermore, transparent white-colored prevailing ponds. Around 34% present 30% fell size range 0.5–1 mm. Polymers like polypropylene (PP), polyethylene (PE), terephthalate (PET) prevalent factor reached exceptionally elevated (&gt;30 for &gt;3 water), signifying sampled regions, particularly S4 S5 (industrial sites), displayed MP contamination. Moreover, pollution load index values (3.0 ± 1.5) (1.5 0.3) also indicated areas contaminated Multivariate analysis concentration studied region could be attributed discharge effluents other human-induced

Language: Английский

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Microplastics contamination in two species of gobies and their estuarine habitat of Indian Sundarbans

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 198, P. 115857 - 115857

Published: Nov. 30, 2023

Language: Английский

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A systematic review on microplastic contamination in marine sediment and water of Asia: Concentration, characterization, and polymeric risk assessment

Water Environment Research, Journal Year: 2025, Volume and Issue: 97(2)

Published: Feb. 1, 2025

Abstract Microplastics (MPs) are ubiquitous in the marine environment and harmful for biodiversity. This review was based on 311 studies published various online platforms between 2006 2024 MP contamination sediment water different countries of Asia. The research highlights an increasing trend studies, with China India. Analytical techniques sample collection, digestion, flotation, polymer identification discussed. Fourier transform infrared spectroscopy (FTIR) emerged as preferred method identification. maximum sediments recorded at Taiwan Indonesia, while China, Malaysia, fiber most dominant shape. 1–2 mm 500 μ—1 mm‐sized MPs having blue color were found dominantly. pollution indices revealed a very high risk all Asian countries. Practitioner Points India leading publications studies. Common tools used steel scoop/spatula/shovel sediment, nets water. FTIR is Highest Indonesia Dominant shape: fiber; size μ–1 mm, color.

Language: Английский

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Impact of Microplastic Exposure on Sand Crab Scopimera globosa Behavior: Implications for Microplastic Transport and Sulfur Cycling through Bioturbation

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

The accumulation of microplastics (MPs) in estuarine regions and their ecological consequences have become global environmental concerns. Estuarine sediments function as major sinks for MPs hotspots critical biogeochemical processes, which are significantly influenced by benthic bioturbation. However, the impacts on behavior highly mobile organisms effects bioturbation activities remain poorly understood. This study utilized laboratory simulation experiments, AI-based behavioral tracking, metagenomic sequencing to systematically examine sand crab migration, sediment physicochemical properties sulfur cycling processes. Results demonstrated that substantially enhanced vertical migration MPs, with fluxes surface layers overlying water increasing 27-fold compared undisturbed conditions. Exposure PE-MPs reduced crabs' foraging intensity induced abnormalities. crabs actively avoided exhibiting a preference burrowing residing deeper layers. shift altered microbial community distributions, an increase Pseudomonadota abundance decline sulfate-reducing bacteria Thermodesulfobacteriota abundance. Furthermore, accelerated sulfate oxidation while inhibited dissimilatory reduction. is first identify role promoting upward sediments. Altered will impact biogeochemistry, function, coastal resilience.

Language: Английский

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Microplastic distribution and its implications for human health through marine environments

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 382, P. 125427 - 125427

Published: April 18, 2025

Language: Английский

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