Evidence map›Paper›PMID 42871765›Full record

ArticleACS ES&T air2026

Combustion Conditions are the Major Drivers of the Variability in Organic Aerosol Chemical Composition and Secondary Organic Aerosol Formation in Emissions from Simulated Wildland Fires.

Muhammad I Abdurrahman, Michael T Caraway, Nicholas Kusumo, Thomas Carroll, Kruthika V Kumar, Anita Anosike, Ariana M Deegan, Ryan P Poland, John T Allen, Mac A Callaham and 5 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in ACS ES&T air, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

15 authors.

Muhammad I AbdurrahmanSchool of Environmental, Civil, Agricultural, and Mechanical Engineering, University of Georgia, Athens, Georgia 30602, United States.ORCID https://orcid.org/0000-0002-4360-7385
Michael T CarawaySchool of Environmental, Civil, Agricultural, and Mechanical Engineering, University of Georgia, Athens, Georgia 30602, United States.
Nicholas KusumoSchool of Environmental, Civil, Agricultural, and Mechanical Engineering, University of Georgia, Athens, Georgia 30602, United States.
Thomas CarrollSchool of Environmental, Civil, Agricultural, and Mechanical Engineering, University of Georgia, Athens, Georgia 30602, United States.
Kruthika V KumarSchool of Environmental, Civil, Agricultural, and Mechanical Engineering, University of Georgia, Athens, Georgia 30602, United States.
Anita AnosikeSchool of Environmental, Civil, Agricultural, and Mechanical Engineering, University of Georgia, Athens, Georgia 30602, United States.
Ariana M DeeganDepartment of Chemistry, University of Georgia, Athens, Georgia 30602, United States.
Ryan P PolandDepartment of Chemistry, University of Georgia, Athens, Georgia 30602, United States.
John T AllenDepartment of Chemistry, University of Georgia, Athens, Georgia 30602, United States.
Mac A CallahamU.S. Department of Agriculture Forest Service, Athens Prescribed Fire Science Laboratory, Southern Research Station, Athens, Georgia 30602, United States.
Joseph J O'BrienU.S. Department of Agriculture Forest Service, Athens Prescribed Fire Science Laboratory, Southern Research Station, Athens, Georgia 30602, United States.
Edward C FortnerAerodyne Research Inc, Billerica, Massachusetts 01821, United States.
Amanda FrossardDepartment of Chemistry, University of Georgia, Athens, Georgia 30602, United States.ORCID https://orcid.org/0000-0002-5728-0854
Geoffrey D SmithDepartment of Chemistry, University of Georgia, Athens, Georgia 30602, United States.ORCID https://orcid.org/0000-0002-6371-5092
Rawad SalehSchool of Environmental, Civil, Agricultural, and Mechanical Engineering, University of Georgia, Athens, Georgia 30602, United States.ORCID https://orcid.org/0000-0002-4951-7962

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Wildland-fire emissions exhibit large variability in aerosol physicochemical properties and potential for forming secondary organic aerosol (SOA). Whether this variability is primarily driven by differences in fuel type or combustion conditions remains unresolved. To address this gap, we performed simulated wildland-fire experiments using fuel beds that contained either surface fuels only or a duff layer underneath the surface fuels. We varied the dry mass loading and moisture content of the surface fuels within ranges encountered in prescribed fires in the Southeastern U.S. Less efficient combustion, which resulted from increased dry mass loading, increased moisture content, or including duff in the fuel bed, produced less light-absorbing organic aerosol (OA) and formed more SOA. Including duff also produced OA with higher nitrogen content. A proof-of-concept experiment using surface fuels conditioned to reproduce inefficient combustion conditions similar to those of duff emitted OA with nitrogen content, light-absorption properties, and SOA formation potential comparable to those of duff OA emissions. Given the profound differences in molecular composition between surface fuels and duff, these results provide strong evidence that the difference in combustion conditions between duff and surface fuels was the major driver of the observed differences in OA physicochemical properties and SOA formation potential.

Indexed as

brown carboncombustion efficiencyorganic nitrogenparticulate emissionsphotochemical aging

Identifiers

PMID42871765
PMCPMC13660632

What OpenQuestion holds

Textmetadata
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.