Cited by 3Microplastics and Plastic PollutionIndoor Air Quality and Microbial ExposureAir Quality and Health Impacts

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

From waste to workplace: Airborne microplastics and endotoxins in an indoor industrial environment

Open access
Gomiero, Alessio, Skogerbø, Geir·2026·International Journal of Hygiene and Environmental Health

Abstract

Airborne microplastics (MPs) and endotoxins are emerging occupational hazards, yet their co-occurrence in real workplaces is poorly documented. The study examined combined exposure in sludge-based fertilizer plant, where digestate handling and drying generate both polymer-rich dust and bioaerosols. Personal and stationary air samples were collected with calibrated pumps at three indoor hotspots: conveyor pipe, dryer, loading dock with an outdoor site. Microplastics were extracted in an ultra-clean laboratory and characterized by μ-FTIR imaging. Endotoxin levels were quantified by the LAL assay. Indoor air contained significantly higher MP counts (24-312 MP m −3 ) than outdoor (13 MP m −3 ), dominated by fragment-shaped particles (74%) vs fibres (26%) within the inhalable size fractions. Concentrations peaked near the sludge dryer unit and the conveyor, indicating process-related sources and resuspension of contaminated dust. Endotoxins (<0,7 – 30 EU m −3 ) were consistently above outdoor levels and highest where sludge-derived material was agitated yet remained below occupational reference values (90 EU m −3 ). Positive covariation between MP and endotoxin levels suggested that tasks and zones with high dust emissions also drive combined particle–biological exposure. The study provides one of the first integrated datasets on airborne MPs and endotoxin in a circular-economy fertilizer facility and demonstrates a practical, contamination-controlled protocol for joint assessment using coordinated sampling. The results show that workers can be simultaneously exposed to elevated levels of polymer particles and endotoxin, underscoring the need to include microplastics in exposure monitoring, risk assessment, and control strategies across biological-waste and related industrial environments.

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Crossref · 10.1016/j.ijheh.2026.114789

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Show all 45 references

Research works printed but not linked: 5

  1. Douwes, 2003, Bioaerosol health effects and exposure assessment: progress and prospects, Ann. Occup. Hyg., 47, 187
  2. Huang, 2023, Interaction between airborne particulates (microplastics) and pathogenic microorganisms, Compr. Anal. Chem., 100, 165
  3. Ramasamy, 2007, Environmental impact of industrial wastes and eco-friendly technologies for sustaining environmental health, J. Sci. Trans. Enviran. Technov, 1, 1
  4. Sandle, 2011, A practical approach to depyrogenation studies using bacterial endotoxin, J. GXP Compliance, 15, 90
  5. Wright, 2017, Threat to human health from environmental plastics, Br. Med. J., 358

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Metadata

Authors
Gomiero, A., & Skogerbø, G.
Affiliations
NORCE Research AS (NO)
Corresponding author
Gomiero, Alessio
Venue
International Journal of Hygiene and Environmental Health
Publisher
Elsevier BV
Published
2026-05
Volume
274
Pages
114789
ISSN
1438-4639 (ISSN-L)
OpenAlex
W7139969118
Cited by
3
References
45
Citations by year
2026: 3
FWCI
4.64
Type
journal article
Language
en
Open access
Locations
  • International Journal of Hygiene and Environmental Health (publishedVersion, cc-by)
  • SSRN Electronic Journal (submittedVersion)
  • PubMed (publishedVersion)
Funders
Research Council of Norway (297059)
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Indoor Air Quality and Microbial Exposure
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
Keywords
airborne microplastics, endotoxin, combined exposure, occupational exposure, bioaerosols, indoor air quality, dust resuspension, circular economy, exposure monitoring, risk assessment
MeSH terms
Microplastics, Working Conditions, Air Pollutants, Occupational, Dust, Endotoxins, Environmental Monitoring, Humans, Occupational Exposure, Air Pollution, Indoor, Workplace

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