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Characteristics, Contamination Levels, and Ecosystem Risk Assessment of Microplastics in Surface Water of a Highly Urbanized River from a Developing Country

ACS Omega 2024 14 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 60 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

M. Belal Hossain M. Belal Hossain M. Belal Hossain As-Ad Ujjaman Nur, Khadijatul Kubra Riya, Partho Banik, Partho Banik, Bilal Ahamad Paray, Bilal Ahamad Paray, Partho Banik, Partho Banik, Khadijatul Kubra Riya, Bilal Ahamad Paray, Bilal Ahamad Paray, M. Belal Hossain M. Belal Hossain M. Belal Hossain M. Belal Hossain M. Belal Hossain M. Belal Hossain M. Belal Hossain Qi Yu, Qi Yu, Md Anisuzzaman, Md Anisuzzaman, M. Belal Hossain Md Anisuzzaman, Md Anisuzzaman, Md Anisuzzaman, Md Anisuzzaman, Md Anisuzzaman, M. Belal Hossain M. Belal Hossain Md Anisuzzaman, Partho Banik, Qi Yu, Md Anisuzzaman, Md Anisuzzaman, Qi Yu, Khadijatul Kubra Riya, Partho Banik, Khadijatul Kubra Riya, Khadijatul Kubra Riya, M. Belal Hossain Partho Banik, Partho Banik, Khadijatul Kubra Riya, Khadijatul Kubra Riya, Khadijatul Kubra Riya, M. Belal Hossain Partho Banik, M. Belal Hossain As-Ad Ujjaman Nur, Partho Banik, Partho Banik, As-Ad Ujjaman Nur, As-Ad Ujjaman Nur, As-Ad Ujjaman Nur, Partho Banik, As-Ad Ujjaman Nur, Md. Abdus Samad Azad, As-Ad Ujjaman Nur, Partho Banik, Khadijatul Kubra Riya, Partho Banik, Khadijatul Kubra Riya, Partho Banik, Partho Banik, Partho Banik, Partho Banik, Partho Banik, Khadijatul Kubra Riya, As-Ad Ujjaman Nur, As-Ad Ujjaman Nur, As-Ad Ujjaman Nur, As-Ad Ujjaman Nur, M. Belal Hossain Bilal Ahamad Paray, Khadijatul Kubra Riya, Khadijatul Kubra Riya, Khadijatul Kubra Riya, Partho Banik, Partho Banik, Partho Banik, Partho Banik, Partho Banik, Partho Banik, Partho Banik, Bilal Ahamad Paray, Partho Banik, Bilal Ahamad Paray, As-Ad Ujjaman Nur, Qi Yu, As-Ad Ujjaman Nur, Bilal Ahamad Paray, Partho Banik, Partho Banik, Partho Banik, Takaomi Arai, Partho Banik, Takaomi Arai, Takaomi Arai, Partho Banik, As-Ad Ujjaman Nur, As-Ad Ujjaman Nur, Partho Banik, Partho Banik, Partho Banik, Partho Banik, Bilal Ahamad Paray, Bilal Ahamad Paray, As-Ad Ujjaman Nur, Bilal Ahamad Paray, As-Ad Ujjaman Nur, As-Ad Ujjaman Nur, Bilal Ahamad Paray, Bilal Ahamad Paray, Bilal Ahamad Paray, Qi Yu, Bilal Ahamad Paray, Bilal Ahamad Paray, Qi Yu, Takaomi Arai, Takaomi Arai, Takaomi Arai, Bilal Ahamad Paray, Qi Yu, Takaomi Arai, Qi Yu, Bilal Ahamad Paray, Partho Banik, Takaomi Arai, Takaomi Arai, Takaomi Arai, Takaomi Arai, M. Belal Hossain Takaomi Arai, Partho Banik, Qi Yu, Takaomi Arai, Bilal Ahamad Paray, M. Belal Hossain Bilal Ahamad Paray, Qi Yu, Bilal Ahamad Paray, Bilal Ahamad Paray, M. Belal Hossain Takaomi Arai, M. Belal Hossain Qi Yu, Bilal Ahamad Paray, Takaomi Arai, Takaomi Arai, Takaomi Arai, Takaomi Arai, Bilal Ahamad Paray, M. Belal Hossain M. Belal Hossain M. Belal Hossain M. Belal Hossain M. Belal Hossain M. Belal Hossain Takaomi Arai, Takaomi Arai, Takaomi Arai, Bilal Ahamad Paray, Bilal Ahamad Paray, Bilal Ahamad Paray, Bilal Ahamad Paray, Bilal Ahamad Paray, M. Belal Hossain M. Belal Hossain Takaomi Arai, M. Belal Hossain Takaomi Arai, M. Belal Hossain Takaomi Arai, M. Belal Hossain Takaomi Arai, Takaomi Arai, Takaomi Arai, Qi Yu, Takaomi Arai, Takaomi Arai, M. Belal Hossain

Summary

Researchers characterized microplastic contamination in an urban river near a megacity in a developing country, finding concentrations of 350 to 660 particles per cubic meter of water. Polyethylene and polypropylene from household and municipal waste were the most common types, and a risk assessment found concerning contamination levels at several sampling sites. The study highlights how rivers in developing nations can serve as major pathways for microplastics to reach the ocean and enter the food chain.

Polymers

PE PP

Study Type Environmental

Microplastic (MP) contamination poses significant risks to ecosystems and human health. However, the absence of standardized protocols, detailed polymer identification, and sources identification hinders the development of targeted mitigation strategies, particularly in developing nations. There is a scarcity of comprehensive data on MP distribution, sources, and transport mechanisms in freshwater environments. This study aimed to fill these gaps by comprehensively characterizing MP contamination, elucidating distribution patterns, identifying sources, and assessing ecological risks in an urban river adjacent to a megacity. This was accomplished using stereomicroscopy, Fourier-transform infrared(FTIR) spectroscopy, and a range of risk assessment indices. The analyses revealed spatial variations in MP levels, ranging from 350 to 660 items/m3 across different sampling stations along the river. Analysis of variance(ANOVA) highlighted significant differences in the average number of MPs among the stations (F = 16.93, p ≪ 0.01), with station S3 exhibiting the highest count and station S4 the lowest. Factors such as point sources of domestic and municipal waste, as well as river navigation, likely contribute to these variations. The predominant types, colors, and sizes of MPs observed were fiber, transparent, and <0.5 mm, respectively. Notably, 80% of the MPs consisted of polyethylene (PE) and polypropylene (PP), commonly associated with land-based sources like packaging materials. Despite minor ecological risks indicated by ecosystem risk assessment indices such as the risk index(RI) and pollution load index (PLI), which recorded values of 9.04 and 1.87, respectively, the potential hazard index(PHI) rose to hazard category V, posing a substantial threat to the river ecosystem. PCA facilitated the identification of trends linked to specific pollution sources, while cluster analysis categorized MPs with similar characteristics, thereby enhancing the understanding of their distribution patterns. These findings provided novel insights into the pervasive presence and pathways of plastic pollution in developing nations, offering important considerations for international efforts to address public health and environmental challenges associated with MPs.

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