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Microplastic Debris in the Beach Sediments of the Kanyakumari Coast, India: Insights on Pollution Load and Environmental Stress Index
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Researchers surveyed beaches along India's Kanyakumari coast and found an average of 1,120 microplastic particles per kilogram of sediment, with fragments and fibers dominant, and a clear link between higher levels of human activity and greater microplastic abundance. The findings quantify pollution load at a heavily visited coastal region, highlighting how anthropogenic activity directly drives microplastic accumulation in nearshore environments.
This study aims to study the occurrence, distribution and assessment of degree of MPs contamination using pollution load and environmental stress index of microplastics (MPs) along the beaches of Kanyakumari district, India. The average abundance of MPs in the study area is 1120 ± 318 MPs/kg with an abundant size range of < 0.5 mm. Fragments and fibres are the dominant shapes of MPs. White-coloured MPs are abundant, followed by yellow and orange, indicating their secondary origin. One-way ANOVA suggests that there exists a significant relationship between the number of anthropogenic activities carried out on the beach and the MP’s abundance. Polyester (PES), Polyethylene (PE), Polystyrene (PS), Polyvinyl Chloride and acrylonitrile butadiene styrene (ABS) are the most abundant polymer types. Based on the Coefficient of MPs Pollution Impact (CMPI), it is inferred that fragment and fibre-shaped MPs have moderate to maximum impact on the beach environment. The Pollution Load Index (PLI) and Environmental Status Index (ESI) calculation, suggest that the study area is under less load and mediocre stress index category respectively.
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Indian coastal sediment survey finding MP peaks near river mouths during monsoon - 80748 — Spacecraft deployable structure microdynamics (not microplastics-related) - 34291 — AFM study of early-stage polymer wear at nanoscale (MP generation mechanism) - 60453 — New all-glass flotation method for extracting MPs from sediment, 92% recovery - 60446 — Low-cost sediment trap captures ~25% of MPs in flowing water - 60445 — Rural Kansas rivers contain MPs even upstream of urban areas - 60408 — Seabirds transport marine MP fibers to remote atoll soils via guano - 60404 — MPs found in mountain snowpack dust, possibly reducing snowmelt albedo - 60397 — Urban land cover correlates with MP levels in karst groundwater springs - 60376 — Asian clams may biologically indicate seasonal MP variation in freshwater - 60369 — MPs detected inside Mammoth Cave; surface rivers the primary entry vector - 60359 — First evidence of MPs in hailstones, showing atmospheric circulation of plastics - 60284 — Turbulent flow vertical mixing study for MP transport modeling - 60231 — Tire wear optimization method; tire particles are top MP source - 60206 — Rhizobiome microbes may help mitigate plastic pollution in soil - 59687 — Review of microbial plastic degradation capabilities and challenges - 59678 — Review of MP hazards and interactions in soil environments - 59675 — MPs found across cryosphere; ice melt may release stored plastics - 59671 — Review of microbial approaches to degrading macroplastic ocean waste - 59603 — Review of MP detection methods in water samples - 59591 — Particle size and density govern MP vertical mixing in water columns - 59538 — Review calling for standardized MP sampling and analysis protocols - 59513 — Review of micro/nanoplastic pollution in terrestrial ecosystems - 59468 — Review of MPs in water and removal performance of wastewater treatment plants - 59467 — Review of MP generation, spread, and management strategies - 59464 — Transformer neural network for automated, explainable MP detection in images - 59436 — Review of MP ecotoxicology across aquatic food webs - 59429 — Polymer type analysis of coastal MPs and the "missing plastics" question - 59420 — Pollution baseline assessment for North Evoikos Gulf, Aegean Sea - 59308 — Review of MP research gaps and data needs in South Asia
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