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

Journal of Hazardous Materials, Год журнала: 2025, Номер 487, С. 137134 - 137134

Опубликована: Янв. 5, 2025

Язык: 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, Год журнала: 2025, Номер 486, С. 137087 - 137087

Опубликована: Янв. 1, 2025

Язык: 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, Год журнала: 2023, Номер 342, С. 123036 - 123036

Опубликована: Ноя. 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.

Язык: Английский

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

The Science of The Total Environment, Год журнала: 2024, Номер 918, С. 170554 - 170554

Опубликована: Фев. 2, 2024

Язык: 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, Год журнала: 2024, Номер 354, С. 120315 - 120315

Опубликована: Фев. 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.

Язык: Английский

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Microplastics (MPs) accumulation in two edible marine fish species sourced from the Bay of Bengal: Contamination level and risk assessment

Journal of Food Composition and Analysis, Год журнала: 2024, Номер 139, С. 107053 - 107053

Опубликована: Дек. 9, 2024

Язык: Английский

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

Frontiers in Environmental Science, Год журнала: 2023, Номер 11

Опубликована: Сен. 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

Язык: Английский

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

Marine Pollution Bulletin, Год журнала: 2023, Номер 198, С. 115857 - 115857

Опубликована: Ноя. 30, 2023

Язык: Английский

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Distribution characteristics and ecological risk analysis of microplastics in sediments and effluents related to offshore oil and gas activities in the Bohai Sea, China

Marine Pollution Bulletin, Год журнала: 2024, Номер 206, С. 116731 - 116731

Опубликована: Июль 26, 2024

Язык: Английский

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Microplastic and Heavy Metal Contamination in Sediments of the High-Altitude Nundkol Lake of Northwestern Himalayas-Kashmir

Environmental Pollution and Management, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

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