NDLI: Influence of collection region and site type on the composition of paved road dust

Content Provider	Springer Nature Link
Author	McDonald, Jacob D. Chow, Judith C. Peccia, Jordan Liu, Yushi Chand, Ramesh Hidy, George M. Mauderly, Joe L.
Copyright Year	2013
Abstract	Exposures to particulate matter (PM) re-suspended by traffic from paved roads are ubiquitous, but little is known about the variability in composition of paved road dust (PRD). This knowledge gap hinders estimates of exposure to PM components near roadways. Respirable fractions of PRD collected from multiple U.S. regions and site types were analyzed to explore chemical composition and variability. Fifty samples were collected from streets, traffic arterials, street canyons, freeways, and industrial sites in six urban regions in the southwestern, Southern California, northeastern, and southeastern U.S. regions and five rural sites. Samples were sieved, aerosolized, and size-classified into fine (PM$_{2.5}$) and coarse (PM$_{10-2.5}$) fractions. Analyses included metals and other elements, organic and elemental carbon, inorganic ions, endotoxin and glucan. Crustal elements, organic carbon, and reactive metals comprised the PRD mass with smaller fractions of elemental carbon and inorganic ions. Proportions of many inorganic components were strongly correlated between particle sizes, but fine and coarse organic carbon poorly correlated. Composition varied both among and within regions and site types, with evidence that chemical signatures varied more systematically by region than by site type. Local sources strongly influenced some samples. Samples from large urban areas had greater contents of reactive metals, but these comprised less than 0.2 % of the mass. Near-feedlot samples had high levels of endotoxin. The results provide insight into the variability of PRD composition, differences between re-suspended PRD and regional airborne PM, and improved source signatures for estimates of exposure to different PM components near roadways.
Starting Page	615
Ending Page	628
Page Count	14
File Format	PDF
ISSN	18739318
Journal	Air Quality, Atmosphere & Health
Volume Number	6
Issue Number	3
e-ISSN	18739326
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-07-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Road dust Particulate matter Fugitive dust Traffic emissions Vehicle emissions Air pollution Environmental Health Atmospheric Protection/Air Quality Control/Air Pollution Health Promotion and Disease Prevention
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Atmospheric Science Management, Monitoring, Policy and Law

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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