Evidence map›Paper›PMID 39937719›Full record

ArticleEnvironmental science & technology2025

Mapping Source-Specific Air Pollution Exposures Using Positive Matrix Factorization Applied to Multipollutant Mobile Monitoring in Seattle, WA.

Ningrui Liu, Rajni Oshan, Magali Blanco, Lianne Sheppard, Edmund Seto, Timothy Larson, Elena Austin

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Environmental science & technology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Ranking sources of indoor volatile organic compounds by attributable burden of disease in China.Journal of exposure science & environmental epidemiology · 2026
    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

7 authors.

Ningrui LiuDepartment of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195, United States.ORCID 0009-0003-1963-5452
Rajni OshanDepartment of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195, United States.
Magali BlancoDepartment of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195, United States.ORCID 0000-0002-9998-995X
Lianne SheppardDepartment of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195, United States.
Edmund SetoDepartment of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195, United States.ORCID 0000-0003-4058-0313
Timothy LarsonDepartment of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195, United States.
Elena AustinDepartment of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195, United States.ORCID 0000-0002-4724-1042

Funding

XENOBIOTIC BIOTRANSFORMATION AND DISPOSITIONP30ES007033 · NIEHS · UNIVERSITY OF WASHINGTON · PI Sheela Sathyanarayana · 1995 to 2026
$42.5M
Air Pollution, the Aging Brain and Alzheimer's DiseaseR01ES026187 · NIEHS · UNIVERSITY OF WASHINGTON · PI LI, GAIL, SHEPPARD, ELIZABETH A LIANNE · 2016 to 2020
$3.8M
NIEHS NIH HHS P30 ES007033NIEHS NIH HHS R01 ES026187
6 · The paper itself

Abstract

Mobile monitoring strategies are increasingly used to provide fine spatial estimates of multiple air pollutant concentrations. This study demonstrates a novel approach using positive matrix factorization (PMF) applied to multipollutant mobile monitoring data to assess source-specific air pollution exposures and to estimate associated emission factors. Data were collected from one-year mobile monitoring, with an average of 26 repeated measures of size-resolved particle number counts (PNC), PM

Indexed as

Air PollutantsAir PollutionEnvironmental MonitoringParticle SizeParticulate MatterVehicle EmissionsWashingtonAir PollutantsParticulate MatterVehicle Emissionsair pollutionblack carbon (BC)emission factorexposure assessmentmobile monitoringpositive matrix factorization (PMF)source apportionmentultrafine particles (UFP)

Identifiers

PMID39937719
PMCPMC11867105

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.