Spatiotemporal trends and characteristics of microplastic contamination in a large river-dominated estuary

Rakib, Md. Refat Jahan; Nahian, Sultan Al; Madadi, Reyhane; Haider, Sayeed Mahmood Belal; De-la-Torre, Gabriel Enrique; Walker, Tony R.; Jonathan, M.P.; Cowger, Win; Khandaker, Mayeen Uddin; Idris, Abubakr M.

doi:10.1039/d3em00014a

Cited by 12 publications

(3 citation statements)

References 62 publications

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“…C 0i is a defined value that is symbolized in the study by the lowest concentration of microplastics present in each sampling site. 36 The microplastic ecological risk index is evaluated using the PLI, which represents the load index of microplastics on the basis of MP concentration. A list of MP criteria, presented in Table S3,† defines the level of risk associated with polymers.…”

Section: Methodsmentioning

confidence: 99%

Investigation of microplastics in urban rivers of Eastern China in summer: abundance, characteristics and ecological risk assessment

Wang,

Huang,

Chen

et al. 2024

Environ. Sci.: Processes Impacts

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Section: Methodsmentioning

confidence: 99%

Investigation of microplastics in urban rivers of Eastern China in summer: abundance, characteristics and ecological risk assessment

Wang,

Huang,

Chen

et al. 2024

Environ. Sci.: Processes Impacts

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“…MP pollution is a problem that has gained international attention from scientists, the research community, the general public, and society. However, it has been noted that these tiny particles are present in all of the biotic and environmental elements, specifically, rain runoff, food products, dust, soil, atmosphere, groundwater, surface water, river water, sediment, and so on. With their omnipresence, high inertness, and stability, it is clear that these particles could have a negative impact on both the environment and human health.…”

Section: Introductionmentioning

confidence: 99%

Extraction and Analysis of Microplastics in the Soil of Diamond City, Surat (Gujarat, India): Ecological Risk, Pollution Indices, and Greenness Evaluation

Bhavsar,

Chovatiya,

Kamble

et al. 2024

ACS Agric. Sci. Technol.

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This study examines microplastics (MPs) for the first time in the soil of Diamond City, Surat (Gujarat, India) in terms of their abundance, distribution, chemical composition, and ecological risk assessment. A stereomicroscope and Fourier transform infrared spectroscopy were used to measure the physical and chemical properties of the MPs. The outcome showed the omnipresence of MPs in Surat city’s soil, with an average abundance of 103.2 ± 57.28 particles 100 g–1. Over 90% of all MPs were made of polyethylene (70.19%), polypropylene (17.53%), and poly(ethylene terephthalate) (6.92%) polymers. The white/transparent-colored MPs having a size of about 2–5 mm are predominantly available. The principal component analysis (PCA) results indicate that the discovered MPs in the soil samples are mostly represented by fragments and fibers, which account for 52.90% of the total variance in the data set. Additionally, in the current research, the ecological risk assessment of MPs in soil, the pollution load index (PLI), the polymer hazard index (PHI), and the ecological risk index (ERI) of MPs were studied. The PLI values greater than 1 were observed, indicating that all sampling sites were polluted with MPs. Based on the abundance, type of polymer, and toxicity of MPs found in the soil sample, an evaluation concluded that there is a moderate to medium ecological risk associated with MPs polluting the city soil. The greatest PHI value in this study is 239.69 (risk category: medium), while the lowest PHI value is 8.69 (risk category: low). The greenness profile of the method was assessed using the software-based analytical greenness metric (AGREE) tool. The developed approach is partially green, as shown by an AGREE metric score of 0.53. The present investigations emphasize the critical importance of taking action in metropolitan areas such as Surat to mitigate MP pollution and improve waste management practices for a greener and cleaner ecosystem in the future. These findings will inspire the creation of ecofriendly alternatives crucial for reducing plastic consumption, safeguarding ecosystems, and mitigating MPs’ impact on the soil quality.

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“…Although the fate and behavior of MPs in marine ecosystems has been widely studied, the transport and sedimentation processes of MPs in freshwater bodies is still not fully understood. Several studies have identified high accumulations of MPs in specific depositional areas of freshwater bodies, such as rivers [16,18,19], lakes [17,20], and dam reservoirs [4,[21][22][23][24]. Moreover, Horton et al [25] indicated that in artificial aquatic environments, the accumulation of MPs is more complicated than in completely natural systems due to the complex interaction of natural-artificial factors.…”

Section: Introductionmentioning

confidence: 99%

Microplastic Evaluation in Water and Sediments of a Dam Reservoir–Riverine System in the Eastern Carpathians, Romania

Pojar,

Dobre,

Lazăr

et al. 2024

Sustainability

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The complex aquatic system of dam reservoirs is known to trap emerging pollutants as microplastics (MPs) in sediments and water column. Considering the knowledge gaps in this type of environment, we investigated the amount and distribution of MPs in the surface water layer, as well as in the surface and deep sediments of the Siriu Reservoir in the Buzău River system, which is located in the southern area of the Eastern Carpathians, Romania. There was a discrepancy between MP abundancy in both water and sediment samples collected near the reservoir (5.3 MPs/m3, 315.5 MPs/kg) and at several kilometers downstream of the dam (1.4 MPs/m3, 132.5 MPs/kg). The chronological accumulation of MPs in the lacustrine sediments was determined by analyzing 5 cm intervals of a 50 cm length core extracted from the reservoir bed. By comparing the concentration of MPs identified in each interval with the solid debit volumes registered in the last decade, we found that flood events could be traced easily due to abundant MP accumulation. Morphologically, the particles were observed mainly as fibers and fragments. Fourier transform infrared spectroscopy (FT-iR) investigations identified most of the MPs as polypropylene (28%), polyethylene (26%), and polyethylene terephthalate (19%).

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Spatiotemporal trends and characteristics of microplastic contamination in a large river-dominated estuary

Abstract: Microplastics (MPs) are emerging contaminants in aquatic ecosystems and have caused substantial concern worldwide.

Cited by 12 publications

References 62 publications

Investigation of microplastics in urban rivers of Eastern China in summer: abundance, characteristics and ecological risk assessment

Investigation of microplastics in urban rivers of Eastern China in summer: abundance, characteristics and ecological risk assessment

Extraction and Analysis of Microplastics in the Soil of Diamond City, Surat (Gujarat, India): Ecological Risk, Pollution Indices, and Greenness Evaluation

Microplastic Evaluation in Water and Sediments of a Dam Reservoir–Riverine System in the Eastern Carpathians, Romania

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