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Quantification of Microplastic Fibers Extracted from South Beach Sediments Located on the South-West Coast of Western Australia
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A case study of South Beach in Western Australia quantified microplastic fiber contamination in coastal sediments, finding fibers as the dominant particle type. The study contributes to documenting microplastic pollution along Australia's coastline and its potential impacts on marine ecosystems and recreational beach users.
The ever-increasing use of plastic materials has also led to high levels of waste entering the environment and becoming a serious pollutant. To determine and expand knowledge of microplastic pollution in the marine environment, the present case study examines South Beach sediments. South Beach is adjacent to Cockburn Sound (Western Australia) and is made up of four smaller beaches. Each of these small beaches are each separated by a groyne. The study considered the abundance and spatial distribution of microplastic fibers in the beach sediments. The analysis technique used density separation, via a new elutriation system using hyper-saline solutions, to separate microplastic fibers from sandy beach sediments. Recuperation rates of around 95% were achieved for plastic densities ranging from 0.9 to 1.3 kg m-3. Recuperation rates for plastic densities greater than 1.4 were around 84%. The overall mean microplastic fiber density for South Beach was found to be 43.3 fibers kg-1. The fibers ranged in size from 800 to 1,824 microns, and the mean size was estimated to be 1168 ± 274 microns. The novel elutriation system developed for this study was found to be ideal for routine monitoring programs.
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Microplastic Contaminants in the Sediment of the East Coast of Saudi Arabia
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Researchers conducted the first measurement of microplastic contamination in sediments along four beaches on Saudi Arabia's east coast, finding 586 microplastic particles with fibers being the dominant shape (96%) and polyethylene terephthalate the most common polymer type, with abundance varying between tidal zones.
Presence, Spatial Distribution, and Characteristics of Microplastics in Beach Sediments Along the Northwestern Moroccan Mediterranean Coast
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Researchers surveyed fourteen beaches along the northwestern Moroccan Mediterranean coast and found microplastics in every sediment sample, averaging about 59 particles per kilogram of dry sand. Fibers were the dominant shape at nearly 78%, with tourism, fishing, and wastewater discharges identified as the most likely pollution sources. The findings indicate moderate but widespread microplastic contamination along this coastline.
Ubiquity of microplastics in coastal seafloor sediments
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Researchers applied a novel method to quantify microplastic concentrations in seafloor sediments from 42 coastal sites across southeastern Australia. They found microplastics in all samples at an average concentration of 3.4 particles per milliliter of sediment, predominantly as filaments. The study demonstrates that microplastic contamination of coastal seafloor sediments is ubiquitous and that hydrological and sediment properties influence deposition patterns.
Assessment of micro and macroplastics along the west coast of India: Abundance, distribution, polymer type and toxicity.
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This study assessed the abundance and types of micro- and macroplastics on ten beaches along India's west coast, finding plastic in all locations with fragments being the most common form. Polymer analysis revealed polypropylene, polyethylene, and polystyrene as the dominant types, and toxicity testing indicated the plastic-contaminated sediments posed ecological risks.
The spatiotemporal dynamics, distribution, and characteristics of beached plastics along the remote south coast of Western Australia
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A survey of beached plastics along the remote south coast of Western Australia found that white, hard microplastics dominate, consistent with global patterns. Plastic density was estimated at about 2 items per square meter. The study confirms that even remote coastlines accumulate microplastic pollution, likely transported by ocean currents from distant sources.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.