Characterization, distribution, and risk assessment of microplastic in fish and sediment from the longest river of Bangladesh

Water Environment Research, Год журнала: 2025, Номер 97(2)

Опубликована: Фев. 1, 2025

Abstract Microplastics (particles smaller than 5 mm) are among the most common pollutants in aquatic habitats because they may develop to high densities and can interact with both abiotic biotic environments. There is less information available on microplastics freshwater systems there marine environment. This study aims shed light abundance spatial distribution of Brahmaputra River (Mymensingh) through utilization wet peroxide oxidation isolation technique, supplemented sodium chloride, examine fish sediment specimens collected between December 21, 2022 January 12, 2023. A total 26 189 microplastic particles were identified samples, respectively. (MPs) concentrations gut ranged from 0.5 ± 0.7 1.67 0.58 MPs individual −1 . The prevalent shape found stomachs was fiber (46%), color transparent (32%). Sizes 0.5–1 mm (1.6 0.74) had microplastics. that fishes demersal (3.25 1.7) zone more benthopelagic (2.5 0.58) pelagic (1.5 0.7) zones. Omnivorous (54%) consumed carnivorous (31%, 2.6 herbivorous (15%,1.33 0.94). Microplastic consumption a moderate correlation body weight (r = 0.34), length 0.46), gastrointestinal content 0.45). per kilogram bed 8 31, mean 18.9 7.01 kg this fragments (52%) 33% blue color. abundant 1–3 m‐meter size class. Fourier transform infrared spectroscopy (FTIR) showed polypropylene (PP) MP (34%) (40%) samples. In study, Pollution load index (PLI) for each sampling site <10, highest value station 2(1.97 0.49), regarded as risk category I. study's results will be useful future research Practitioner Points Abundance determined longest river Bangladesh. structural properties characterized using ATR‐FTIR spectroscopy. investigated

Язык: Английский

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A straightforward protocol for extracting microplastics from freshwater sediment with high organic content

Knowledge and Management of Aquatic Ecosystems, Год журнала: 2025, Номер 426, С. 6 - 6

Опубликована: Янв. 1, 2025

Extracting microplastics from sediment is critical in assessing pollution freshwater environments. However, this process can be particularly challenging for clayey sediments with a significant organic matter content. This study proposes simplified method extracting organic-rich and complete protocol processing. To evaluate the extraction method, calcined was artificially enriched varying content (20, 40, 60%). Known quantities of plastic particles distinct characteristics compositions (PET, HDPE, PP, PE, PS) were introduced into these artificial sediments, mixed saline solution, centrifuged, then assessed recovery rate. The rate exceeded 83% five selected types. Additionally, minimized particle loss by reducing number transfers between containers, common issue other microplastic protocols. Based on efficiency we proposed applied environmental samples. comprises key steps: (1) drying samples, (2) density separation, (3) filtering, (4) digestion matter, (5) visual analysis. extracted wide variety diverse shapes, colors, sizes, polymeric compositions. These results demonstrate that both straightforward effective commonly found systems. Moreover, employs inexpensive, readily available, environmentally friendly reagents, making it more sustainable alternative to methodologies matrices.

Язык: Английский

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Microplastic accumulation in respiratory and digestive systems of selected fish from Banten Bay, Indonesia

Environmental Monitoring and Assessment, Год журнала: 2025, Номер 197(4)

Опубликована: Март 21, 2025

Язык: Английский

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Identification and quantification of microplastics in water, sediment, and shrimp collected from shrimp farming ponds

Bioresource Technology Reports, Год журнала: 2025, Номер unknown, С. 102064 - 102064

Опубликована: Фев. 1, 2025

Язык: Английский

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