Assessment of potential ecological risk of microplastics in the coastal sediments of India: A meta-analysis

Ranjani, M.; Veerasingam, S.; Venkatachalapathy, R.; Mugilarasan, M.; Bagaev, Andrei; Mukhanov, Vladimir; Vethamony, P.

doi:10.1016/j.marpolbul.2021.111969

Cited by 219 publications

(48 citation statements)

References 68 publications

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“…The index PHI is the product of the percentage of speci c polymer types obtained at each sampling site (P n ) and hazard scores of polymer types (S n ; Lithner et al 2011;Ranjani et al 2021). The total risk of microplastic pollution in the study area can be categorized into different hazard levels depending on the PHI scores.…”

Section: Risk Assessment Analysismentioning

confidence: 99%

“…Based on the PHI values, Ranjani et al (2021) found that the sediments in the coastal regions showed a serious microplastic pollution trend. The overall risk of microplastic pollution in India ranges from Hazard level IV to V. The coastal areas of Karnataka have PHI values ranging from 100 to 1000, falling in hazard level IV.…”

Section: Risk Assessment Of Microplastics In Sediments Of River Shara...mentioning

confidence: 99%

“…The PERI scores (300 to 600) for sediments (continent and marine) along the Indian coast show the potential of high ecological risk, with an average PERI score of 303.2 for Karnataka (Ranjani et al 2021). The present study's PERI value ranges from 160 to 440 and 40 to 2240 during the PRM and POM (Fig.…”

Section: Risk Assessment Of Microplastics In Sediments Of River Shara...mentioning

confidence: 99%

“…The coe cient of toxicity (T i r ) is indicative of the level of toxicity and biological sensitivity. The coe cient is the sum of the percentage of speci c polymers in all the samples (P n /C i ) multiplied by the hazard values of plastic polymers (S n ) (Ranjani et al 2021;Peng et al 2018).…”

Section: Risk Assessment Analysismentioning

confidence: 99%

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Seasonal Variations and Risk Assessment of Microplastics in the Riverine Sediments of the Western Ghats, A Heritage Site in Southern India

Amrutha

Shajikumar

Warrier

et al. 2022

Preprint

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There is very little knowledge on microplastic pollution in the Western Ghats (WG), a heritage site in southwest India. To address this, we have studied the seasonal variations of sedimentary microplastics (MPs) from River Sharavathi - a pristine river in the WG, southern India. We analysed the sedimentological and carbon content (organic and inorganic) of these sediments and explored their relationship with MPs. Finally, risk assessment indices such as the Pollution Load Index (PLI), Polymer Hazard Index (PHI), and the Potential Ecological Risk Index (PERI) were calculated to detect the levels of plastic pollution. The concentration of MPs ranged from 2.5 to 57.5 pieces/kg and 0 to 15 pieces/kg during the pre-monsoon and post-monsoon seasons, respectively. The dip in the MPs abundance during the post-monsoon season was due to the extremely high rainfall in the river basin during July-August 2019, which would have entrained the sedimentary MPs and transported them to the coast/Arabian Sea. Smaller MPs (0.3-1 mm) were more abundant than the larger MPs (1–5 mm), mainly due to the breakdown of sedimentary plastics by physical processes. Fragments, films, foams and fibres were the main categories of MPs and the main polymers were: polyethylene > polyethylene terephthalate > polypropylene. No significant relationship was observed between the sedimentological properties and microplastics, which may be due to the different physical properties of sediments and microplastics. The PLI, PHI, and PERI indices suggest different contamination levels in the river basin, and the district administration can use the data to mitigate plastic pollution in heritage sites.

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Section: Risk Assessment Analysismentioning

confidence: 99%

Section: Risk Assessment Of Microplastics In Sediments Of River Shara...mentioning

confidence: 99%

Section: Risk Assessment Of Microplastics In Sediments Of River Shara...mentioning

confidence: 99%

Section: Risk Assessment Analysismentioning

confidence: 99%

See 2 more Smart Citations

Seasonal Variations and Risk Assessment of Microplastics in the Riverine Sediments of the Western Ghats, A Heritage Site in Southern India

Amrutha

Shajikumar

Warrier

et al. 2022

Preprint

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“…Soil degradation is without a doubt one of the world's most pressing environmental issues. As a result of various degradation processes around the world (Ranjani et al, 2021), approximately 6 million hectares of farming fields have become less productive (Cui et al, 2021). For example, the value of Iraqi sediment plains land is decreasing due to a rise in the number of companies and their pollution, urbanization, increasing traffic levels, and even the exploitation of sewage and waste dumps (Bahram et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Soil Pollution Levels in Al-Qadisiyah Governorate, Iraq Using Contamination Index and GIS

Al-Khuzaie¹,

Maulud²

2022

J. Ecol. Eng.

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The precise determination of trace element concentrations in the soil of the Al-Qadisiyah Governorate is part of the Iraqi sedimentary plain is required to eliminate high levels of harmful elements in polluted soils. The soil samples were collected from 28 representative profiles in Al-Shamiyah city. The soil profiles were defined using virtual characterization. In this study, I-geo was used to analyze soil pollution. The goals and destinations of the I-geo readings Contamination of Cd, Ni, Pb, and Zn in various soil strata. I-geo (Cd) generally range from 0.58 to 4.71, I-geo (Ni) range from 0.09 to 4.07, I-geo (Pb) ranged range from 0.07 to 2.79, and I-geo (Zn) ranges from zero to 2.79, depicting the local differences in I-geo for pollutants in the research area. Suggesting that the research area had been heavily polluted from Cd in the varied layers of the soils. On the maps pertaining to Zn and Pb, the majority of the research area was primarily covered in the orange and blue hues, suggesting that a significant portion of the research area was likely to be severely polluted from Cd and Ni. Moreover, the land cover layouts of Ni in layers of the soils revealed concentrations rising towards to the western sections, which could be attributed to proximity to a major drain. The results display that its I-geo value of four trace metals generally range from non-pollute to significantly heavily polluted. The I-geo data show significant differences in levels of the Ni, Cd, Zn, and Pb in different soils strata. Including these findings, the soil in Al-Shamiya, Al-Qadisiyah Governorate contains high levels of Cd, Ni, Pb, and Zn. Industries of fossil fuel combustion, as well as other man-made wastes include agricultural nutrients, soil conditioners, and sludge, particularly, ammonium phosphate pollution in soils. The pollutant load index (PLI) reveals a baseline level of contamination in 28 locations, as well as a decline in soil quality in four others. Finally, assessing the danger of contamination for trace metals utilizing the I-geo and PLI by using the GIS method and multimodal models is a helpful and relevant strategy.

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Environmental Risks of Microplastics on the Spatial and Temporal Gradient in a River Originating from the Western Himalayas

Hafeez

Qadir

Aslam

et al. 2023

Enviro Toxic and Chemistry

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The presence of microplastics in different environmental matrices has raised many concerns about potential effects of microplastics on humans and freshwater ecosystems. In Pakistan, rivers potentially receive microplastics from anthropogenic activities in their catchments. However, research studies regarding microplastics' presence, distribution, and risks are scarce in Pakistan. To bridge the gap, the present study was conducted to evaluate microplastic pollution in the Chenab River. Surface water samples were collected from selected sites on the Chenab River using a manta trawl in the low-flow season during postmonsoon (October) 2019 and 2020 and in the high-flow season during monsoon (July) 2020 and 2021. Samples were digested, followed by density separation and filtration. Identification and polymer characterization of microplastics were completed using stereomicroscopy and attenuated total reflection Fourier transform infrared spectroscopy, respectively. Microplastics were found in all samples with significant spatiotemporal variation in microplastic concentration, with an average of 45.98 ± 10.45 microplastics/m 3 in the low-flow season and 34.66 ± 16.15 microplastics/m 3 in the high-flow season. Among microplastic shapes, fibers were the most dominant shape, whereas polyethylene terephthalate (38.2%) and polypropylene (19%) were the most abundant polymers. Polymer risk index analysis and pollution load index demonstrated that most of the sites ranked as safe. The potential ecological risks from single polymers and combined polymers showed minor risks posed by microplastics. The present study is the first step to focus on microplastic pollution in the Chenab River; it will help river managers to mitigate the microplastic pollution without compromising the ecological integrity of the river.

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Assessment of potential ecological risk of microplastics in the coastal sediments of India: A meta-analysis

Cited by 219 publications

References 68 publications

Seasonal Variations and Risk Assessment of Microplastics in the Riverine Sediments of the Western Ghats, A Heritage Site in Southern India

Seasonal Variations and Risk Assessment of Microplastics in the Riverine Sediments of the Western Ghats, A Heritage Site in Southern India

Evaluation of Soil Pollution Levels in Al-Qadisiyah Governorate, Iraq Using Contamination Index and GIS

Environmental Risks of Microplastics on the Spatial and Temporal Gradient in a River Originating from the Western Himalayas

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