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This is a response to reviewer comments on a study characterizing atmospheric microplastic source profiles and plasticizer emissions from five common pollution sources in PM2.5 and PM10 aerosols across China's Guanzhong Plain.
Reply on RC1
This is a response to reviewer comments on a study characterizing atmospheric microplastic source profiles and plasticizer emissions from five common pollution sources in PM2.5 and PM10 aerosols across China's Guanzhong Plain.
Reply on RC2
This is a response to reviewer comments on a study characterizing atmospheric microplastic source profiles and plasticizer emissions from five common pollution sources in PM2.5 and PM10 aerosols across China's Guanzhong Plain.
Reply on RC3
This is a response to reviewer comments on a study characterizing atmospheric microplastic source profiles and plasticizer emissions from five common pollution sources in PM2.5 and PM10 aerosols across China's Guanzhong Plain.
Reply on RC6
This is a response to reviewer comments on a study characterizing atmospheric microplastic source profiles and plasticizer emissions from five common pollution sources in PM2.5 and PM10 aerosols across China's Guanzhong Plain.
Insight into the size-resolved markers and eco-health significance of microplastics from typical sources in northwest China
Researchers characterized airborne microplastics and plasticizers emitted from five common sources in northwest China—plastic burning, fruit bag burning, road traffic, agricultural film, and livestock breeding—finding source-specific polymer and chemical profiles in PM2.5 and PM10 fractions.
Insight into the size-resolved markers and eco-health significance of microplastics from typical sources in northwest China
Researchers characterized atmospheric microplastics emitted from five source types — plastic burning, fruit bag burning, road traffic, agricultural film, and livestock breeding — in northwest China's Guanzhong Plain, finding distinct polymer and plasticizer profiles for each source. Plastic burning produced the highest diversity of polymer types, providing source-specific fingerprints useful for pollution management.
Comment on egusphere-2025-1821
This peer review comment on an atmospheric microplastics study characterizes source profiles and emission factors for eight polymer types and three plasticizer classes from plastic burning, fruit bag burning, road traffic, agricultural film, and livestock breeding sources.
Fine micro- and nanoplastics particles (PM2.5) in urban air and their relation to polycyclic aromatic hydrocarbons
Researchers measured ultrafine micro- and nanoplastics in urban air at the individual polymer level for the first time, finding correlations between airborne plastic particle concentrations and polycyclic aromatic hydrocarbons, suggesting plastics act as carriers for toxic compounds.
Atmospheric microplastic emissions from land and ocean
Researchers compiled a comprehensive atmospheric microplastic dataset and derived top-down and bottom-up emission estimates for particles in the 5-100 micrometer size range from both land and ocean sources, providing gridded emissions data in multiple formats for use in atmospheric transport modelling.
Multi-Scale Modeling of Plastic Waste Gasification: Opportunities and Challenges
Researchers quantified microplastic deposition in remote mountain lakes across the Tibetan Plateau, finding particles at all sites despite their distance from urban centers. Atmospheric transport from South and East Asian industrial regions was proposed as the primary input pathway.
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.
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.
Airborne Micro- and Nanoplastics: Source Implications from Particulate Matter Composition
Researchers simultaneously measured airborne micro- and nanoplastics (AMNPs) and particulate matter (PM) across three sites in Japan in different seasons, identifying shared and distinct sources. AMNPs co-occurred with combustion-related PM components, providing evidence that airborne plastics partly originate from the same sources as fine particulate air pollution.
[Distribution, Respiratory Exposure, and Traceability of Atmospheric Microplastics in Yichang City].
Researchers sampled airborne microplastics at 16 locations across Yichang City, China, and found them in every area, with the highest concentrations settling over urban residential neighborhoods. The particles were mostly polyester fibers and came predominantly from nearby sources rather than long-range transport. Daily inhalation estimates were calculated for both adults and children, highlighting indoor and outdoor respiratory exposure as a meaningful human health concern that warrants tighter monitoring.
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.
Plastic burning: An important global source of atmospheric nanoplastic particles
Researchers conducted smoldering laboratory experiments with PVC, PP, LDPE, PET, and PS plastics and used aerosol mass spectrometry to characterise the physical and chemical properties of nanoplastic particles emitted, finding that plastic burning generates large quantities of nanoplastics and thermo-oxidation products that represent a significant but poorly quantified global source of atmospheric nano-sized plastic particles.
Understanding the sources of atmospheric microplastics
Scientists studied where tiny plastic particles in the air come from by analyzing data from cities, suburbs, and remote areas around the world. They found that no single source explains all the microplastics we breathe—instead, different locations have different main sources, like ocean spray in some areas and urban pollution in others. This research is important because understanding where airborne microplastics come from will help scientists better predict human exposure and potential health risks from breathing these particles.
Assessing the external atmospheric input of microplastics: Two strategies based on polymer composition and aging characteristics
Researchers compared microplastic pollution in dust from a sparsely populated area on the Mongolian Plateau and a densely populated city, using polymer composition and aging characteristics to distinguish locally generated microplastics from those transported externally via long-distance atmospheric transport.
Sources and distribution of atmospheric microplastics in Northwest China river valleys via land use
This study quantified suspended atmospheric microplastics across eight land use types in Lanzhou, northwest China, finding a mean abundance of 4.5 particles/m³ with peaks in industrial and residential areas. Land use type was the strongest predictor of MP concentration, highlighting urban and agricultural activities as key emission drivers.
Can we identify the dominant sources of atmospheric microplastic?
Researchers applied Lagrangian back-trajectory modelling using FLEXPART-v11 to atmospheric microplastic observations at multiple global sites including polar regions, marine boundary layers, and high mountain snow, aiming to identify dominant emission sources and quantify their relative contributions to atmospheric MP pollution.
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.
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.
A review of microplastics pollution and its remediation methods: Current scenario and future aspects
Researchers measured microplastic concentrations in atmospheric deposition at remote mountain sites in the Pyrenees, detecting an average of 365 particles per square meter per day. The findings confirm long-range atmospheric transport of microplastics far from pollution sources.