Papers

61,005 results
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Article Tier 2

Study of suspended microplastics in indoor air to assess human exposure through inhalation

Researchers investigated suspended microplastics in indoor air to assess the extent of human exposure through inhalation. The study quantified airborne microplastic particles in indoor settings, providing data on a potentially important but understudied route of daily microplastic intake for the general population.

2026 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Exploring microplastics sources in indoor environments, an emerging pollutant

This study explores microplastics as an emerging indoor air and surface pollutant, examining the diverse sources that contribute to microplastic presence within indoor environments and characterizing the pathways by which people may be exposed.

2025 SPIRE - Sciences Po Institutional REpository
Review Tier 2

Indoor microplastics: a comprehensive review and bibliometric analysis

This review summarizes research on microplastic pollution inside buildings, where people spend most of their time. Indoor environments generally have higher microplastic concentrations than outdoors, with fiber-shaped particles from synthetic textiles being the most common type. Since people inhale and ingest these particles daily, indoor microplastic exposure may be a significant and underappreciated route of human health risk.

2023 Environmental Science and Pollution Research 31 citations
Article Tier 2

Assessing the concentration, distribution and characteristics of suspended microplastics in the Malaysian indoor environment

Researchers measured airborne microplastic levels inside offices, classrooms, apartments, and homes across Malaysia over six weeks. Microplastics were found in every indoor environment tested, with fibers being the most common type, and people in homes were estimated to inhale more microplastics daily than those in offices or classrooms. The findings highlight that indoor air is a significant and often overlooked source of microplastic exposure for people.

2024 The Science of The Total Environment 12 citations
Article Tier 2

Determination of microplastics in university interior environments

This study measured microplastic concentrations in indoor air at university facilities, building on evidence that indoor environments are significant sites of microplastic exposure through inhalation. Particles were detected in multiple indoor settings, contributing to growing evidence that daily indoor air exposure is a notable route of human microplastic intake.

2024 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Airborne microplastic contamination across diverse university indoor environments: A comprehensive ambient analysis

Researchers measured airborne microplastics across different indoor spaces at a university and found that people in those buildings inhale an estimated 180 to 240 microplastic particles daily. The most common types found were nylon, PTFE, polypropylene, and polyethylene, with fragments showing rough edges from wear and tear. This study highlights that indoor air is a significant and often overlooked source of microplastic exposure for people who spend most of their time indoors.

2024 Air Quality Atmosphere & Health 49 citations
Article Tier 2

Study of suspended microplastics in indoor air to assess human exposure through inhalation

Researchers studied suspended microplastics in indoor air to evaluate human exposure through inhalation. The study measured airborne microplastic concentrations in indoor environments, contributing to the growing body of evidence that inhalation represents a significant and underappreciated route of human microplastic exposure.

2026 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Microplastics Differ Between Indoor and Outdoor Air Masses: Insights from Multiple Microscopy Methodologies

Researchers compared airborne microplastic concentrations inside and outside buildings in coastal California using multiple microscopy techniques. The study found that microplastic composition and abundance differed between indoor and outdoor air masses, with indoor environments containing distinct microplastic profiles, suggesting that people are exposed to different types of airborne microplastics depending on whether they are indoors or outdoors.

2020 Applied Spectroscopy 298 citations
Article Tier 2

Determination of microplastics in university interior environments

This study measured airborne microplastic concentrations in indoor environments at a university, finding particles in air samples from multiple indoor settings. Results contribute to evidence that indoor air represents a significant daily source of microplastic inhalation exposure, particularly given the time people spend in closed indoor environments.

2024 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

An Occupant-Based Overview of Microplastics in Indoor Environments in the City of Surabaya, Indonesia

Airborne microplastic deposition in settled indoor dust was measured in residential and commercial buildings in a city environment, providing an occupant-based assessment of indoor microplastic exposure. Microplastics smaller than 5 mm were deposited at measurable rates in all sampled indoor settings, with fiber shapes dominating the settled dust contamination.

2020 Journal of Ecological Engineering 52 citations
Article Tier 2

Indoor microplastics and bacteria in the atmospheric fallout in urban homes

Researchers measured indoor airborne microplastics and bacteria across different rooms in 20 urban homes. The study identified nearly 24,000 microplastic particles of 21 polymer types and found that microplastic abundance varied by room type and usage patterns, with a significant correlation between microplastic concentrations and bacterial community structure in the home environment.

2022 The Science of The Total Environment 70 citations
Article Tier 2

Microplastic Fallout in Different Indoor Environments

Researchers tracked microplastic fallout in indoor environments (dormitory, office, corridor) over three months and found that higher human activity on workdays and airflow from air conditioning increased microplastic deposition rates, identifying indoor air as a significant exposure route.

2020 Environmental Science & Technology 404 citations
Article Tier 2

Microplastic levels in the indoor air of buildings based on plastic waste recycling in Indonesia

Researchers measured airborne microplastic concentrations inside a miniature building constructed from recycled plastic waste in Indonesia over 30 days, finding an average deposition rate of 30.8 particles/m2/day during the dry season with passive air sampling and microscopic analysis.

2024 Journal of Air Pollution and Health
Article Tier 2

Characterization of microplastics in indoor and ambient air in northern New Jersey

Researchers characterized airborne microplastics in both indoor and outdoor environments across northern New Jersey, finding fibers, films, and fragments of common plastic types in offices, classrooms, hallways, and homes. Indoor microplastic concentrations were generally higher than outdoor levels, with deposition rates varying by location and particle size. The study adds to growing evidence that indoor air is a significant pathway for human microplastic exposure through inhalation.

2021 Environmental Research 206 citations
Article Tier 2

First overview of microplastics in indoor and outdoor air

This study provided one of the first comprehensive overviews of microplastic contamination in both indoor and outdoor air, establishing that microplastics are airborne and that indoor environments may have higher concentrations than outdoors due to synthetic materials and textiles. The findings raised new concerns about inhalation as a pathway for human microplastic exposure.

2015 HAL (Le Centre pour la Communication Scientifique Directe) 49 citations
Systematic Review Tier 1

Systematic review of microplastics and nanoplastics in indoor and outdoor air: identifying a framework and data needs for quantifying human inhalation exposures

This systematic review is the first to examine microplastic levels in both indoor and outdoor air and estimate how much people inhale. The findings suggest we are breathing in microplastic particles daily, with indoor air often containing higher concentrations due to synthetic textiles and household materials.

2024 Journal of Exposure Science & Environmental Epidemiology 90 citations
Article Tier 2

Temporal Variations and Characteristics of Microplastics in Indoor and Outdoor Air

Researchers measured microplastic concentrations in indoor and outdoor air across different seasons and found levels were similar in both environments, averaging about 1.8–2.7 particles per cubic meter. The dominant plastic type was PET, and turbulent airflow and human activity — not season or day of week — were the main drivers of indoor microplastic levels.

2025 Aerosol and Air Quality Research 1 citations
Article Tier 2

A Short Review On Content And Composition Of Airborne Microplastics

This short review synthesizes current knowledge on airborne microplastic concentrations and polymer composition, summarizing monitoring data from indoor and outdoor environments and identifying research gaps in exposure assessment.

2024 1 citations
Article Tier 2

Occurrence, human exposure, and risk of microplastics in the indoor environment

This review examines the often-overlooked issue of microplastic contamination in indoor environments, where people spend up to 90 percent of their time. Researchers found that indoor microplastic concentrations can be substantial, originating from synthetic textiles, furniture, and building materials. The study highlights a significant gap in understanding human microplastic exposure and calls for more research on the health risks of breathing in and ingesting these particles at home and work.

2021 Environmental Science Processes & Impacts 212 citations
Article Tier 2

Characterization and quantification of microplastics in indoor environments

Researchers measured airborne microplastics in indoor spaces including offices, labs, dining halls, and dormitories. Dormitories had the highest microplastic levels, with fibers being the most common shape found. The study highlights that people are regularly inhaling microplastics indoors, where they spend the majority of their time.

2023 Heliyon 36 citations
Article Tier 2

The Occurrence of Microplastics in the Indoor Environment

This book examines the occurrence of microplastics in indoor environments, covering sources, accumulation patterns, and implications for human exposure. It compiles research on indoor microplastic contamination as a growing area of concern distinct from outdoor and aquatic pollution.

2025
Article Tier 2

Microplastics in the indoor environment

This review examines microplastic contamination in indoor environments, noting that people are continuously exposed to microplastics in household dust, air, and from flooring, furniture, and textiles. Indoor microplastic exposure is a key route of human inhalation and ingestion that has received less attention than environmental contamination.

2020 UBibliorum repositorio digital da ubi (University of Beira Interior)
Article Tier 2

Airborne microplastics in indoor and outdoor environments of a developing country in South Asia: abundance, distribution, morphology, and possible sources

Researchers quantified airborne microplastic concentrations in indoor and outdoor environments in a South Asian developing country, characterizing particle abundance, size distribution, morphology, and potential sources, finding significant microplastic air pollution in a lower-middle-income country context.

2022 Figshare 1 citations
Article Tier 2

Airborne microplastics: Occurrence, sources, fate, risks and mitigation

This review compiles findings from over 140 studies on airborne microplastics, covering their sources, distribution, and health risks in both indoor and outdoor environments. Researchers found that indoor environments often have higher microplastic concentrations than outdoor air, with textiles and building materials being major sources. The study highlights growing evidence that inhaled microplastics may pose respiratory health risks and calls for standardized measurement methods.

2022 The Science of The Total Environment 150 citations