Evidence map›Paper›PMID 26560404›Full record

ArticleEnvironmental science. Processes & impacts2015

Oxidative potential of coarse particulate matter (PM(10-2.5)) and its relation to water solubility and sources of trace elements and metals in the Los Angeles Basin.

Farimah Shirmohammadi, Sina Hasheminassab, Dongbin Wang, Arian Saffari, James J Schauer, Martin M Shafer, Ralph J Delfino, Constantinos Sioutas

Open access · greenAbstract read
In one paragraph

Article in Environmental science. Processes & impacts, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
4.4field-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

17 citing papers in PubMed, 53 citations in OpenAlex.

  1. Inhaled Pollutants of the Gero-Exposome and Later-Life Health.The journals of gerontology. Series A, Biological sciences and medical sciences · 2024
    Review
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  9. Individual and Environmental Factors Associated with Proteinuria in Korean Children: A Multilevel Analysis.International journal of environmental research and public health · 2019
    Article
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  12. Review
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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

8 authors at 6 institutions in 1 country.

Farimah ShirmohammadiUniversity of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, USA. sioutas@usc.edu.
Sina HasheminassabUniversity of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, USA. sioutas@usc.edu.
Dongbin WangUniversity of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, USA. sioutas@usc.edu.
Arian SaffariUniversity of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, USA. sioutas@usc.edu.
James J SchauerUniversity of Wisconsin-Madison, Environmental Chemistry and Technology Program, Madison, WI, USA.
Martin M ShaferUniversity of Wisconsin-Madison, Environmental Chemistry and Technology Program, Madison, WI, USA.
Ralph J DelfinoUniversity of California, Irvine, Department of Epidemiology, School of Medicine, Irvine, CA, USA.
Constantinos SioutasUniversity of Southern California, Department of Civil and Environmental Engineering, Los Angeles, CA, USA. sioutas@usc.edu.
Southern California University for Professional Studies · USUniversity of Southern California · USIndiana University School of MedicineLos Angeles City College · USMadison Group (United States) · USUniversity of Wisconsin–Madison · US

Funding

Ultrafine Particulate Matter &Cardiorespiratory HealthR01ES012243 · NIEHS · UNIVERSITY OF CALIFORNIA-IRVINE · PI DELFINO, RALPH J · 2003 to 2015
$6.0M
NIEHS NIH HHS ES12243NIEHS NIH HHS R01 ES012243
6 · The paper itself

Abstract

In this study, potential sources of water-soluble (WS) and water-insoluble (WI) fractions of metals and trace elements in coarse particulate matter (CPM) (PM(10-2.5), 2.5 < dp < 10 μm) were identified and their association with the redox properties of CPM, measured by means of reactive oxygen species (ROS), was explored. CPM was collected during 2012-2013 in Central Los Angeles (LA) and 2013-2014 in Anaheim, CA. Generally, WI components contributed to a larger fraction of CPM ROS activity (as much as 64% and 54% at Central LA and Anaheim, respectively). Two major source factors were identified by principal component analysis for both the WS and WI fractions: vehicular abrasion and re-suspended road dust. Univariate analysis indicated that several species were correlated with CPM ROS activity: in WS fraction, metals such as Mn, Fe, Cd and Zn were associated with WS ROS, while in WI fraction Ti, Fe, Ni, Pb and Cr had the highest correlations with WI ROS activity. Multiple linear regression analysis revealed that both vehicular abrasion and re-suspension of road dust were associated with WS ROS activity, while only vehicular abrasion contributed significantly to the WI ROS activity. Moreover, comparison with previous studies indicated that the ROS activity of CPM has increased in the past 5 years in Central LA. We attribute this increase mainly to the elevated levels of re-suspension of road dust caused by the increase in vehicle speed and number of trucks in recent years in this area, reaffirming the growing importance of non-tailpipe traffic emissions on CPM toxicity.

Indexed as

Environmental MonitoringAir PollutantsAir PollutionLos AngelesMetalsParticulate MatterSolubilityTrace ElementsAir PollutantsMetalsParticulate MatterTrace Elements

Identifiers

PMID26560404
PMCPMC4666786
OpenAlexW2152251051

What OpenQuestion holds

Textmetadata
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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.