Characterization of microplastic pollution in the Pasur river of the Sundarbans ecosystem (Bangladesh) with emphasis on water, sediments, and fish

Nawar, Nowshin; Rahman, Md. Mostafizur; Chowdhury, Farah Noshin; Marzia, Shumayta; Ali, Mir Mohammad; Akbor, Md. Ahedul; Siddique, Md. Abu Bakar; Khatun, Mst. Afifa; Shahjalal, Md.; Huque, Roksana; Malafaia, Guilherme

doi:10.1016/j.scitotenv.2023.161704

Cited by 35 publications

(6 citation statements)

References 62 publications

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“…The elevated presence of these MPs in our study area implies an increased risk of aquatic organisms mistaking them for food. Additionally, this study revealed that brown and blue MPs were the dominant color types, aligning with the prevalence of blue-colored MPs found by Fatema et al (2023) and differing from the dominant color types reported by Hossain et al (2022) and Nawar et al (2023), who found white and black, respectively. Variations in the dominant color type of MPs observed in different studies can be attributed to differences in the sources of MPs and environmental conditions.…”

Section: Discussionsupporting

confidence: 84%

“…Matjašič et al (2023) similarly discovered MPs in the size range of 0 to 0.99 mm in two catchments in Slovenia. In the Pasur River of Bangladesh, Nawar et al (2023) found the majority of MP particles measured less than 1 mm. Moreover, studies by Laermanns et al (2021) documented MP size ranges of 0.5 mm to 1 mm and 0.05 mm to 0.1 mm at the Confluence of the Elbe and Mulde Rivers in Germany, respectively.…”

Section: Discussionmentioning

confidence: 93%

“…Recent studies have uncovered the occurrence of MPs in diverse marine and freshwater environments throughout the country (Rezania et al, 2018). Significant level of MP abundance was found in the Meghna River estuary (Hossain et al, 2023), Buriganga River (Islam et al, 2022), and Pasur River in Bangladesh (Nawar et al, 2023). The Karnaphuli River, which originates in Mizoram state, India, holds immense significance for navigation, fishing, transportation, and industrial activities in Chattogram City and the hill tracts regions of Chattogram, Bangladesh (Siddique & Akter, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Microplastic pollution in two industrial locations of the Karnaphuli River, Bangladesh: insights on abundance, types, and characteristics

Shimul,

Bakeya,

Ananna

et al. 2023

Fish Aquat Sci

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Microplastic (MP) pollution in aquatic environments is a growing concern worldwide. This study investigated the abundance, types, and attributes of MPs in the surface water at two industrial sites (Avoimitro Ghat and Kalurghat) along the Karnaphuli River in Chattogram, Bangladesh. Sampling was conducted over eight months across three transects encompassing a total area of 500 m at each site. A manta net of 200 μm mesh size was used to sample MPs. The obtained samples were subsequently filtered, enumerated, and characterized using a stereo microscope and imaging software. The mean abundance of MP particles (per km 2 ) was found higher in Avoimitro Ghat (94,861 ± 57,126) than in Kalurghat (31,343 ± 23,183). A significant statistical difference (p < 0.05) was observed in the mean abundance of MP particles between the wet and dry seasons. The fragment group of MP exhibited the most abundant category, whereas the pellet category displayed the lowest. MPs with an elongated shape prevailed at both locations throughout all seasons. At Avoimitro Ghat, blue-colored MPs demonstrated the highest mean count, while in Kalurghat, the highest mean count belonged to brown-colored MPs. The size distribution of MPs differed between the two sites, with 1-2 mm MPs being plentiful in both seasons and Avoimitro Ghat, whereas MPs ranging from 500 µm to less than 1 mm were abundant in Kalurghat. Ten (10) polymer types were found from Fourier-transform infrared spectroscopy (FTIR) analysis with high levels of polypropylene atactic in both Avoimitro Ghat (32%) and Kalurghat (17%). The findings provide important insights into MP pollution in the Karnaphuli River, which may aid in developing effective strategies to mitigate the impacts of MP pollution on the aquatic ecosystem and human health.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Microplastic pollution in two industrial locations of the Karnaphuli River, Bangladesh: insights on abundance, types, and characteristics

Shimul,

Bakeya,

Ananna

et al. 2023

Fish Aquat Sci

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“…And then, the collected suspension was filtered using a vacuum filtration, washed by ultrapure water, and the cellulose acetate membranes (pore size: 0.45 µm) were collected. It was later stored for microscopic analysis using a microscope (Olympus BX-51, Japan).The microplastic samples from the filters were placed in sterile, dry Petri plates with lids and stored at room temperature (25°C) in a desiccator (Nawar et al, 2023).…”

Section: Isolation Of Microplastics From Surface Seawatermentioning

confidence: 99%

“…The beaker was then heated on a hot plate or water bath ( 75°C) to ensure complete digestion of organic matter. Finally, the microplastic particles were extracted from the above mixture using a saturated NaCl solution (1.2 g/cm 3 ) for density separation (Nawar et al, 2023). The obtained microplastics were observed using a microscope (Olympus BX-51, Japan).…”

Section: Isolation Of Microplastics From Sedimentsmentioning

confidence: 99%

Assessment of mariculture-derived microplastic pollution in Dapeng Cove, China

Xu,

Li,

Chen

et al. 2024

Front. Mar. Sci.

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Marine microplastic pollution just as ocean acidification and greenhouse effect has attracted much environmental concern and become a hot research subject for marine researchers globally. The abundances, distribution, and characteristics of microplastics in surface seawater and sediments from Dapeng Cove were investigated in this study. The results indicated that the abundance of microplastics was 1333 ± 773 items/m3 in surface seawater and 1381 ± 1021 items/kg in sediments, showing a medium microplastic pollution level compared with other sea areas. Fibers were the prevailing shapes of microplastics in both surface seawater and sediments, representing 65.4% and 52.1% of the total microplastic numbers, respectively. Moreover, small microplastics (<1mm) in surface seawater and sediments accounted for 69.6% and 62.2%, respectively. According to the identification by Fourier Transform Infrared microscope (micro-FTIR), the main composition of microplastics in surface seawater and sediments was polyethylene (PE) or polypropylene (PP). It is necessary to enhance the regulation of current plastic products used in aquaculture, reduce the production and release of microplastics during the mariculture process, and develop alternatives to plastic fishing gear. The results of this study suggested that long-term mariculture development had caused the accumulation of a large amount of microplastics in water and sediments in Dapeng Cove. We constructed the first basic data of microplastics pollution about Dapeng Cove. This study will serve as a reference for further studies of the distribution and migration of microplastics in mariculture zones.

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Plastic Waste Management During and Post COVID‐19 Pandemic: Challenges and Strategies

Acharya,

Behera,

Deshmukh

et al. 2024

Plastic Waste Management

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Characterization of microplastic pollution in the Pasur river of the Sundarbans ecosystem (Bangladesh) with emphasis on water, sediments, and fish

Cited by 35 publications

References 62 publications

Microplastic pollution in two industrial locations of the Karnaphuli River, Bangladesh: insights on abundance, types, and characteristics

Microplastic pollution in two industrial locations of the Karnaphuli River, Bangladesh: insights on abundance, types, and characteristics

Assessment of mariculture-derived microplastic pollution in Dapeng Cove, China

Plastic Waste Management During and Post COVID‐19 Pandemic: Challenges and Strategies

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