Papers

61,005 results
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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)
Systematic Review Tier 1

Systematic Review on Indoor Microplastics: Unveiling Sources, Exposure Pathways, and Human Health Implications

This systematic review reveals that indoor environments are a significant and often overlooked source of microplastic exposure. People spend most of their time indoors, where microplastics shed from textiles, furniture, and packaging accumulate in dust and air, meaning your home and office may be major contributors to the microplastics you breathe and ingest daily.

2024 Journal of Advanced Research in Micro and Nano Engieering 10 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
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

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
Article Tier 2

Unravelling the microplastic contamination: A comprehensive analysis of microplastics in indoor house dust

This study provides a detailed analysis of microplastics found in indoor house dust, where people spend most of their time. Fibers were the most common type found, originating from textiles, carpets, and clothing, with plastic sizes and types varying across different household areas. The findings highlight that everyday indoor environments are a significant source of microplastic exposure through inhalation and ingestion of dust.

2024 Indoor and Built Environment 37 citations
Systematic Review Tier 1

A systematic review of airborne microplastics emissions as emerging contaminants in outdoor and indoor air environments

This systematic review compared microplastic levels in indoor and outdoor air around the world. Indoor air often contains more microplastics than outdoor air — largely from synthetic clothing and household items — meaning our homes and workplaces may be significant sources of daily microplastic exposure.

2024 Emerging contaminants 26 citations
Article Tier 2

Indoor Airborne Microplastics: Human Health Importance and Effects of Air Filtration and Turbulence

This review examines airborne microplastics in indoor environments, where people spend most of their time and where microplastic concentrations are higher than outdoors. Most indoor airborne microplastics are textile fibers small enough to be inhaled deep into the lungs, where they can enter the bloodstream and reach other organs. The authors discuss how air filtration and airflow patterns affect indoor microplastic levels, noting that breathing in microplastics may pose greater health risks than consuming them in food and drink.

2024 Microplastics 11 citations
Article Tier 2

Review of microplastics in the indoor environment: Distribution, human exposure and potential health impacts

This review comprehensively analyzes microplastic contamination in indoor environments, where most people spend the majority of their time. Researchers found that indoor exposure to microplastics comes from multiple sources including dust, air, drinking water, and food, with finer particles posing the greatest concern because they can enter the bloodstream and organs. The findings suggest that indoor microplastic exposure represents a meaningful but understudied health risk that requires further research into mitigation strategies.

2023 Chemosphere 50 citations
Article Tier 2

A first overview of textile fibers, including microplastics, in indoor and outdoor environments

This study is the first to investigate synthetic fiber contamination in both indoor and outdoor air, finding that indoor environments contained significantly higher concentrations of fibers than outdoor settings. Researchers identified that most airborne fibers were synthetic materials like polypropylene and polyethylene, with indoor levels ranging from 1 to 60 fibers per cubic meter. The findings suggest that people may be inhaling substantial amounts of microplastic fibers simply by spending time indoors.

2016 Environmental Pollution 1477 citations
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

Microplastics in indoor deposition samples in university classrooms

Researchers analyzed microplastic contamination in dust collected from university classrooms and found particles from clothing fibers, shoes, and school supplies. Most particles were polyamide and polypropylene fibers ranging from 120 to over 2,000 micrometers in size, and surface damage on the particles suggests they may be breaking down into even smaller nanoplastics over time. Since people spend most of their time indoors, this indoor microplastic exposure is an important and underappreciated route of human contact with these particles.

2024 Discover Environment 29 citations
Review Tier 2

Critical review on airborne microplastics: An indoor air contaminant of emerging concern

This review summarizes existing research on microplastics floating in indoor air, finding that synthetic textiles, flooring materials, and increased use of plastic protective equipment since the pandemic are major sources. Indoor microplastic levels can be higher than outdoor levels, and inhaling these particles has been linked to respiratory, immune, and nervous system concerns. The findings highlight that people face significant microplastic exposure simply from breathing the air in their own homes and workplaces.

2023 Environmental Research 47 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
Article Tier 2

Occurrence of Microplastics in the Atmosphere: An Overview on Sources, Analytical Challenges, and Human Health Effects

This review examines microplastic pollution in the atmosphere, covering both indoor and outdoor sources and the challenges of measuring airborne particles. Researchers found that indoor environments, where people spend most of their time, can have particularly high concentrations of microplastics from synthetic textiles and household items. The study highlights that inhaling airborne microplastics is an important but under-studied route of human exposure.

2024 Atmosphere 7 citations
Article Tier 2

Microplastics in dust from different indoor environments

Researchers measured microplastic levels in indoor dust across different types of buildings, finding that residential apartments had the highest concentrations at over 1,100 particles per gram of dust. Polyester fibers were the most common type in homes and hotels, while offices and classrooms had more polyethylene and polypropylene. The study estimated that infants face the highest daily microplastic intake from breathing indoor dust, roughly 30 times more per body weight than adults.

2022 The Science of The Total Environment 134 citations
Review Tier 2

Indoor Microplastics: A Comprehensive Review and Bibliometric Analysis

This comprehensive review and bibliometric analysis summarizes research on indoor microplastic contamination, covering sampling methods, identification techniques, and concentration levels in dust, deposition, and air samples. Fiber-shaped microplastics are the most commonly detected indoors, with dust and deposition samples showing higher concentrations than air samples.

2023 3 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

Microplastics Aloft: A comprehensive exploration of sources, transport, variations, interactions and their implications on human health in the atmospheric realm

This review summarizes research on airborne microplastics and finds that indoor environments typically contain far more microplastic particles than outdoor air -- up to 760,000 particles per square meter per day indoors versus a maximum of about 1,159 outdoors. Sources include synthetic clothing, plastic manufacturing, and even ocean spray. Inhaled microplastics can reach deep into the lungs and potentially enter the bloodstream, raising concerns about respiratory and cardiovascular health effects.

2024 Earth-Science Reviews 28 citations
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

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

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
Review Tier 2

A narrative review of microplastics in the indoor and outdoor environment, human effects, and ecological risks

This narrative review examined microplastic contamination in both indoor and outdoor air, as well as other environmental compartments, and discussed potential effects on human health. The study found that microplastics are present in homes, offices, and outdoor air alongside traditional environmental settings, and suggests that airborne exposure may be an underappreciated route by which people encounter these particles daily.

2024 Journal of Air Pollution and Health 9 citations
Article Tier 2

Quantification and exposure assessment of microplastics in Australian indoor house dust

Researchers collected dust samples from 32 Australian homes and found microplastic fibers in every one, with deposition rates varying widely between households. Homes with carpet had significantly higher levels of plastic fibers like polyethylene and polyester, while homes without carpet had more polyvinyl fibers from floor coatings. Since people spend about 90% of their time indoors, this household dust represents a major and often overlooked source of microplastic exposure through both inhalation and ingestion.

2021 Environmental Pollution 254 citations