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61,005 resultsShowing papers similar to Spatiotemporal distribution and potential sources of atmospheric microplastic deposition in a semiarid urban environment of Northwest China
ClearRegional 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.
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.
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.
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.
Distribution Characteristics of Atmospheric Microplastics in Typical Desert Agricultural Regions
Researchers characterized atmospheric microplastics in desert agricultural regions surrounding the Taklamakan Desert in Xinjiang, China, using both active and passive collection methods. Polypropylene and polyethylene were the dominant polymer types, with particles entering the atmosphere from agricultural plastic films.
An important source of terrestrial microplastics‐atmospheric deposition: A microplastics survey based on Shaanxi, China
A six-month atmospheric sampling campaign across ten cities in Shaanxi Province, China detected microplastics in all air deposition samples, including both wet (rain/snow) and dry deposition. The most abundant polymer types were PET, polyacrylonitrile, PE, and PP — consistent with textiles and packaging as key sources — and concentrations were highest in the provincial capital Xi'an, correlating with urban population density. The study confirms that atmospheric fallout is a significant and widespread route by which microplastics enter terrestrial environments far from any obvious plastic source.
Atmospheric Microplastics Emission Source Potentials and Deposition Patterns in Semi‐Arid Croplands of Northern China
Researchers measured atmospheric microplastic emissions from croplands in semi-arid northern China, where wind erosion events are common. They found that fiber-shaped particles dominated airborne microplastics and that concentrations increased significantly when air masses passed over cropland surfaces. The study reveals that agricultural land in dry regions may be an underrecognized source of airborne microplastic pollution.
Atmospheric microplastic deposition in a valley city over a five-year period: sources, ecological risks, spatiotemporal distributions and influencing factors
A five-year (2019–2023) monitoring study in a valley city found rising atmospheric microplastic deposition, with summer peaks over four times higher than winter lows, strongly influenced by precipitation, wind, temperature, and urban activity levels. Long-term data showing increasing airborne microplastic trends have direct implications for inhalation exposure in urban populations.
Atmospheric deposition of anthropogenic particles and microplastics in south-central Ontario, Canada
Researchers measured atmospheric microplastic deposition at four monitoring stations in south-central Ontario, Canada over 13 months, finding an average deposition rate of 57 anthropogenic particles per square meter per day, of which 12% were confirmed plastic. Fibers dominated and deposition rates correlated with wind speed and temperature, with higher concentrations when wind came from the south-east.
Occurrence and sources of microplastics in dust of the Ebinur lake Basin, northwest China
Researchers investigated microplastic distribution in atmospheric dustfall across the Ebinur Lake Basin in northwest China, sampling four land-use types monthly for a year. They found construction land had the highest microplastic content (28.61 mg/kg), with films (46.85%) and PE/PP polymers dominating, and identified daily plastic products and industrial packaging as primary sources.
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 deposition is an important pathway for inputting microplastics: Insight into the spatiotemporal distribution and deposition flux in a mega city
Researchers monitored microplastic fallout from the atmosphere in the Chinese megacity of Wuhan over an entire year and found an average of about 83 particles landing per square meter per day. The highest concentrations fell in spring, with city centers receiving more than suburbs, and most particles were tiny fibers from textiles. This study shows that simply breathing outdoor air and living in a city exposes people to a constant rain of microplastic particles.
Distribution and possible sources of atmospheric microplastic deposition in a valley basin city (Lanzhou, China)
Researchers measured atmospheric microplastic deposition in Lanzhou, a valley basin city in China, during the COVID-19 pandemic period from February to August 2020. They found an average deposition rate of about 354 particles per square meter per day, predominantly small PET fragments and fibers, with local human activity identified as the main source. The study suggests that human activity patterns and rainfall are the dominant factors influencing the spatial and temporal distribution of airborne microplastics in urban environments.
Analysis of microplastic sources in Wuliangsuhai Lake, China: Implications to microplastic deposition in cold, arid region lakes
Researchers used trajectory modeling, receptor modeling, and field monitoring to characterize atmospheric microplastic deposition into a cold, arid lake in Inner Mongolia, finding that spring deposition was highest, fiber-type polyethylene terephthalate and polyethylene particles dominated, and urban sources including housing, transportation, and agriculture were the main contributors — adding tons of microplastics to the lake annually via air.
Characterization and traceability analysis of dry deposition of atmospheric microplastics (MPs) in Wuliangsuhai Lake
Atmospheric microplastic dry deposition was characterized at six sites around Wuliangsuhai Lake in China from March to June 2021, and source traceability analysis identified local agricultural plastic use and urban areas as major contributors to atmospheric MP loading.
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.
Characteristic 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 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.
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.
Various forms and deposition fluxes of microplastics identified in the coastal urban atmosphere
Researchers collected precipitation samples in a Chinese coastal city and found microplastics of multiple shapes deposited from the atmosphere, with seasonal variation in deposition rates. This is one of the first studies to document atmospheric microplastic deposition in a coastal urban environment.
Dry and wet deposition of microplastics in a semi-arid region (Shiraz, Iran)
Researchers collected settled dust and rainfall samples over a year at urban and remote elevated sites in Shiraz, Iran and detected microplastics in all samples, with monthly deposition rates ranging from about 1,000 to 3,500 MP/m², providing among the first atmospheric MP deposition data from a semi-arid Middle Eastern region.
Microplastic abundance and distribution in a Central Asian desert
Microplastics were found in desert sediments of Central Asia at concentrations similar to levels reported in some ocean surface samples, with fibers dominating and their deposition attributed to wind-driven atmospheric transport, establishing that even arid, sparsely populated deserts are not immune to global microplastic dispersal.
First quantification and chemical characterization of atmospheric microplastics observed in Seoul, South Korea
Researchers conducted the first measurement of airborne microplastics across five outdoor sites in Seoul, South Korea, finding plastic particles everywhere from business districts to urban forests. Microplastic levels were higher in areas with more human activity and during weekdays versus weekends. Polypropylene and PET were the most common types, suggesting that everyday plastic products are a major source of airborne microplastic pollution in cities.