Evidence map›Paper›PMID 34915899›Full record

ArticleParticle and fibre toxicology2021

Chemistry, lung toxicity and mutagenicity of burn pit smoke-related particulate matter.

Yong Ho Kim, Sarah H Warren, Ingeborg Kooter, Wanda C Williams, Ingrid J George, Samuel A Vance, Michael D Hays, Mark A Higuchi, Stephen H Gavett, David M DeMarini and 2 more

Open access · goldAbstract read
In one paragraph

Article in Particle and fibre toxicology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
3.6field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 66 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Identification and Quantitation ofMethods and protocols · 2025
    Article
  14. Seasonal PMParticle and fibre toxicology · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 5 institutions in 2 countries.

Yong Ho KimCenter for Environmental Medicine, Asthma and Lung Biology, University of North Carolina, Chapel Hill, NC, 27599, USA.
Sarah H WarrenBiomolecular and Computational Toxicology Division, Center for Computational Toxicology and Exposure, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA.
Ingeborg KooterDepartment of Circular Economy and the Environment, The Netherlands Organisation of Applied Sciences, TNO, Utrecht, The Netherlands.
Wanda C WilliamsPublic Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA.
Ingrid J GeorgeAir Methods and Characterization Division, Center for Environmental Measurements and Modeling, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA.
Samuel A VanceOak Ridge Institute for Science and Education, Research Triangle Park, NC, 27711, USA.
Michael D HaysAir Methods and Characterization Division, Center for Environmental Measurements and Modeling, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA.
Mark A HiguchiPublic Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA.
Stephen H GavettPublic Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA.
David M DeMariniBiomolecular and Computational Toxicology Division, Center for Computational Toxicology and Exposure, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA.
Ilona JaspersCenter for Environmental Medicine, Asthma and Lung Biology, University of North Carolina, Chapel Hill, NC, 27599, USA. ilona_jaspers@med.unc.edu.
M Ian GilmourPublic Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27711, USA. gilmour.ian@epa.gov.
Environmental Protection Agency · USNetherlands Organisation for Applied Scientific Research · NLResearch Triangle Park Foundation · USTriangle · USUniversity of North Carolina at Chapel Hill · US

Funding

UNC-CH CENTER FOR ENVIRONMENTAL HEALTH &SUSCEPTIBILITYP30ES010126 · NIEHS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Stephanie Engel · 2001 to 2026
$36.3M
NIEHS NIH HHS P30 ES010126
6 · The paper itself

Abstract

backgroundOpen burning of anthropogenic sources can release hazardous emissions and has been associated with increased prevalence of cardiopulmonary health outcomes. Exposure to smoke emitted from burn pits in military bases has been linked with respiratory illness among military and civilian personnel returning from war zones. Although the composition of the materials being burned is well studied, the resulting chemistry and potential toxicity of the emissions are not.

methodsSmoke emission condensates from either flaming or smoldering combustion of five different types of burn pit-related waste: cardboard; plywood; plastic; mixture; and mixture/diesel, were obtained from a laboratory-scale furnace coupled to a multistage cryotrap system. The primary emissions and smoke condensates were analyzed for a standardized suite of chemical species, and the condensates were studied for pulmonary toxicity in female CD-1 mice and mutagenic activity in Salmonella (Ames) mutagenicity assay using the frameshift strain TA98 and the base-substitution strain TA100 with and without metabolic activation (S9 from rat liver).

resultsMost of the particles in the smoke emitted from flaming and smoldering combustion were less than 2.5 µm in diameter. Burning of plastic containing wastes (plastic, mixture, or mixture/diesel) emitted larger amounts of particulate matter (PM) compared to other types of waste. On an equal mass basis, the smoke PM from flaming combustion of plastic containing wastes caused more inflammation and lung injury and was more mutagenic than other samples, and the biological responses were associated with elevated polycyclic aromatic hydrocarbon levels.

conclusionsThis study suggests that adverse health effects of burn pit smoke exposure vary depending on waste type and combustion temperature; however, burning plastic at high temperature was the most significant contributor to the toxicity outcomes. These findings will provide a better understanding of the complex chemical and combustion temperature factors that determine toxicity of burn pit smoke and its potential health risks at military bases.

Indexed as

Air PollutantsParticulate MatterAnimalsFemaleIncinerationLungMiceMutagenicity TestsMutagensRatsAir PollutantsMutagensParticulate MatterInhalationLung toxicityMilitary burn pit smokeMutagenicityParticulate matter

Identifiers

PMID34915899
PMCPMC8675519
OpenAlexW4200431552

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.