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61,005 resultsShowing papers similar to Various forms and deposition fluxes of microplastics identified in the coastal urban atmosphere
ClearCharacteristic of microplastics in the atmospheric fallout from Dongguan city, China: preliminary research and first evidence
Researchers characterized microplastics in atmospheric fallout collected in Dongguan City, China, finding that airborne microplastics are deposited daily and that urban areas generate significant atmospheric microplastic emissions.
Atmospheric deposition of microplastics in the megalopolis (Shanghai) during rainy season: Characteristics, influence factors, and source
Researchers characterized atmospheric microplastic deposition in Shanghai during the rainy season, finding that rainfall events significantly increased deposition rates, with fibers dominating and sources linked to both local urban activities and long-range atmospheric transport.
Atmospheric deposition of microplastics in a rural region of North China Plain
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.
Atmospheric microplastics in rainfalls in the megacity of Hangzhou: Morphology, composition, and deposition flux
Microplastics in rainfall across Hangzhou, China were found in all wet deposition samples, with fibers dominating, and deposition flux correlated with rainfall intensity and industrial activity patterns — highlighting urban wet deposition as a significant microplastic transport pathway.
Atmospheric transport and deposition of microplastics in a subtropical urban environment
Researchers measured atmospheric wet and dry deposition of microplastics over one year in Guangzhou, China, a subtropical megacity. They found deposition fluxes ranging from 51 to 178 particles per square meter per day, with fibers, fragments, films, and microbeads all detected, indicating that atmospheric transport is a significant pathway for microplastic distribution in urban environments.
Atmospheric deposition of microplastics in the coastal zone: Characteristics and relationship with meteorological factors
Microplastics deposited from the atmosphere were sampled and characterized in a coastal zone, with analysis of meteorological factors including air humidity, wind speed, precipitation, and air mass trajectories. The study found measurable atmospheric microplastic deposition in the coastal environment, with weather patterns influencing deposition rates and particle characteristics.
Airborne microplastics in China: Assessing urbanization, weather factors and policy implications from the nationwide study
Researchers conducted the first nationwide assessment of atmospheric microplastics across 30 Chinese cities combined with year-round monitoring in Ningbo, finding an average deposition flux of 473.9 items m-2 d-1 and identifying urbanization level, seasonal weather patterns, and wind conditions as key governing factors of atmospheric microplastic distribution.
Atmospheric microplastics at a southern China metropolis: Occurrence, deposition flux, exposure risk and washout effect of rainfall
Researchers measured airborne microplastics in Guangzhou, a major city in southern China, finding them throughout the year with higher levels during the rainy season. They estimated that adults in the city inhale tens of thousands of microplastic particles annually through normal breathing. Rainfall helped wash microplastics out of the air, but it also deposited them onto surfaces where they can enter water and soil, creating another pathway for human exposure.
The deposition of atmospheric microplastics in Jakarta-Indonesia: The coastal urban area
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.
Unexpected deposition by rainfall of globally transportable microplastics (<25 μm) hovering over the megacity of Beijing
Microplastics smaller than 25 micrometers were detected in rainfall in Beijing, confirming that precipitation is a significant pathway for depositing atmospheric microplastics back to Earth's surface in urban megacities.
The atmospheric microplastics deposition contributes to microplastic pollution in urban waters
Researchers investigated how atmospheric deposition contributes to microplastic pollution in urban waters. The study found that microplastic deposition fluxes were higher during wet weather than dry weather and showed moderate to strong correlations with atmospheric conditions, demonstrating that airborne microplastic fallout is a meaningful source of contamination in urban water environments.
Microplastic atmospheric dustfall pollution in urban environment: Evidence from the types, distribution, and probable sources in Beijing, China
Researchers collected atmospheric dustfall samples across urban Beijing and analyzed the types, distribution, and likely sources of airborne microplastics. They found that synthetic fibers from textiles and fragments from various plastic products were the dominant forms, with concentrations varying by location and proximity to pollution sources. The study provides evidence that urban atmospheric microplastic pollution is widespread and likely linked to daily human activities and industrial processes.
Atmospheric Dry and Wet Deposition of Microplastics in an Urban Area and a Remote Island: Year-Round Consecutive Monthly Observations
Researchers conducted year-round parallel monthly monitoring of atmospheric microplastic dry and wet deposition in urban Seoul and remote Baengnyeong Island, finding that urban areas had significantly higher deposition rates and that long-range transport contributes measurable microplastic fallout even to remote marine locations.
Occurrence, characteristics, and factors influencing the atmospheric microplastics around Jiaozhou Bay, the Yellow Sea
Atmospheric microplastics collected around Jiaozhou Bay in China were deposited at rates of up to 80 items per square meter per day, with seasonal variation driven by monsoons — higher deposition in dry seasons — and fragments and polyethylene being the dominant forms. The estimated annual input of microplastics into this bay via atmospheric deposition alone is over 7.6 tons, highlighting that air-to-sea transfer is a substantial and seasonally dynamic pathway for marine microplastic contamination.
Regional and climatic variations in atmospheric microplastic deposition
Researchers simultaneously quantified atmospheric dry deposition of microplastics across nine Iranian cities with different climates over a seven-day period, finding deposition rates ranging from under 5 to over 100 MP/m²/hr dominated by fibres of polyethylene, PET, polypropylene, polystyrene, and nylon, with significant regional and climatic variation.
Microplastics in the atmospheric of the eastern coast of China: different function areas reflecting various sources and transport
Atmospheric sampling at two sites in a Chinese coastal city found microplastics suspended in the air at both downtown and industrial locations, but with different dominant sources — lifestyle and consumer products in the city center versus industrial activity in the industrial zone. The finding that microplastics are transported through the atmosphere confirms that people in urban areas are inhaling plastic particles regardless of proximity to industrial facilities.
Comparative study on physicochemical characteristics of atmospheric microplastics in winter in inland and coastal megacities: A case of Beijing and Shanghai, China
Researchers compared airborne microplastic pollution during winter in Beijing, an inland city, and Shanghai, a coastal city in China. They found notable differences in the shapes, sizes, and polymer types of microplastics between the two cities, reflecting their distinct urban and industrial environments. The study provides evidence that local geography and economic activity significantly influence the characteristics of atmospheric microplastic contamination.
Characteristics, sources and influencing factors of atmospheric deposition of microplastics in three different ecosystems of Beijing, China
Researchers characterized atmospheric microplastic deposition across forest, agricultural, and residential ecosystems in Beijing, finding that residential areas had the highest deposition fluxes, with PET and rayon fibers being the dominant types.
Atmospheric deposition of microplastics in shiraz, iran
Researchers measured atmospheric microplastic deposition during successive dry and rainy events over eight consecutive days at six sites in and around Shiraz, Iran, including a remote non-urbanised location. The study found that microplastic abundance and deposition flux increased progressively during dry periods and was similar across urban and remote sites, suggesting widespread atmospheric transport and redistribution of microplastics via rainfall scavenging.
A preliminary comparison of microplastic type, size, and composition in atmospheric and foliage samples in an urban scenario
Researchers compared microplastic types, sizes, and polymer compositions in atmospheric dry and wet deposition samples from different settings. The study found that atmospheric deposition is a meaningful pathway for microplastic dispersal, with variation in particle characteristics across sites.
Atmospheric microplastic over the South China Sea and East Indian Ocean: abundance, distribution and source
Researchers measured atmospheric microplastic abundance across 21 transects from coastal China to the East Indian Ocean and found that concentrations near the Pearl River Estuary were ten times higher than over the open ocean, with backward trajectory modeling suggesting long-range atmospheric transport exceeding 1,000 km but indicating that atmospheric deposition is unlikely to be the primary source of oceanic microplastic contamination.
Atmospheric deposition as a pathway for microplastic transport to the marine environment: Temporal variation and environmental factors
A year-long study in a South Korean coastal bay found that atmospheric dry and wet deposition delivers a measurable and seasonally variable load of microplastics to the marine surface, with wind speed, rainfall, and dust events driving the temporal patterns. This confirms that the atmosphere is a significant and often overlooked transport route for microplastics from land to ocean.
Atmospheric microplastics in Handan, China: characteristics, seasonal variations, and human exposure risk
Researchers conducted a year-long monitoring campaign of deposited and suspended atmospheric microplastics in Handan, an industrial city in northern China. They found strong seasonal variations linked to wind patterns and industrial emissions, with human inhalation exposure posing a measurable health risk.
Regional and climatic variations in atmospheric microplastic deposition: A study throughout Iran
Dry deposition of atmospheric microplastics was measured simultaneously across nine Iranian cities with different climates and populations over one week, finding deposition rates from 5 to over 100 particles/m²/day, with population density and wind conditions as key drivers.