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Initial survey on microplastic waste in coastal water in Nam Dinh
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This study assessed microplastic contamination in rainfall and dry atmospheric deposition collected over one year at coastal and inland sites in Spain. Deposition rates were higher at the coastal site, and polypropylene and polyester fibers were the most abundant types.
Plastic materials are defined as including the whole of organic polymers owning plasticity. Their production increases rapidly due to their superior properties and applications in our life. Currently, the annual production of plastic is estimated at nearly 400 million tons. About 10% of the plastic produced is discharged into the seas and oceans. Microplastics (MP, less than 5 mm in size) are non-biodegradable and persistent in the environment and have the ability to accumulate in various environmental components, organisms and other human beings through the food chain. Therefore, assessing microplastic pollution becomes essential for the marine and ocean environment. This study aims to evaluate microplastic pollution in Nam Dinh seawater. Water samples were taken in summer 2020 and spring 2021 in Giao Thuy district, Nam Dinh province. Samples were treated with 30% H2O2 solution to remove organic matters and then microplastic buoyantly separated using saturated NaCl solution. MP was identified through observation under a stereo microscope (Olympus SZX2-TR300) and its nature was determined through infrared spectroscopy (µFTIR). Results show that a large level of pollution (average 6 to 8 particles/m3 and 10–14 million particles/km2) is associated with the predominant of colored fibers among MP characteristics. Most of the microplastics identified are Polypropylene in nature. Next, more research needs to be invested in this pollution problem, such as expanding the scope and research object.
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Characterization of Atmospheric Microplastics in a Sub-urban area of northwest of Spain
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Atmospheric microplastics were characterized in a sub-urban area of northwestern Spain using bulk deposition collectors over an extended period. The study found microplastics in all samples, with fibers being the dominant type and polyester being the most common polymer. The findings contribute to the growing evidence that atmospheric microplastic deposition is widespread and highlight the need for standardized sampling protocols to compare results across studies.
Anthropogenic particle abundance and characteristics in seawater and intertidal sediments of the Tonkin Bay Coast (North Vietnam)
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Researchers measured microplastic contamination in seawater and intertidal sediments at four sites along the northern Vietnam coast, finding fiber particles as the dominant type in both compartments. Higher microplastic levels were recorded during the rainy season, suggesting rivers are a primary transport route carrying plastic from inland sources to the sea. The study provides rare baseline data for a developing-country coastal zone and emphasizes that even smaller polymer fragments below the measured size range likely represent a significant unquantified hazard.
Suspended and deposited microplastics in the coastal atmosphere of southwest England
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Researchers measured microplastic concentrations in the coastal atmosphere of southwest England over a 42-day period, finding both suspended and deposited particles dominated by fibers. The study found that rayon was the most common fiber type and that microplastic levels showed no clear dependence on wind speed or direction, suggesting widespread atmospheric distribution of these particles in coastal environments.
Atmospheric deposition of microplastics in a rural region of North China Plain
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Researchers investigated atmospheric microplastic deposition in a rural area of the North China Plain, finding significant quantities of microplastics deposited through both dry and wet pathways, with fibers and polyethylene being the dominant types.
The deposition of atmospheric microplastics in Jakarta-Indonesia: The coastal urban area
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Researchers characterized atmospheric microplastic deposition in Jakarta, Indonesia over 12 months, finding deposition rates of 3-40 particles per square meter per day with fibers as the dominant shape, and higher deposition during the rainy season compared to the dry season.
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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.