Title

Evaluation of factors influencing road dust loadings in a Latin American urban center

DOI

https://doi.org/10.1080/10962247.2020.1806946

Document Type

Article

Publication Date

1-1-2021

Publication Title

Journal of the Air and Waste Management Association

Abstract

Vehicle non-exhaust emissions are a major component of particle matter, including the direct wear of tires, brakes, road, and the resuspension of deposited particles. It is suggested that resuspended PM (RPM) emissions can be at the same magnitude or even larger than combustion emissions in urban centers. Factors affecting RPM can be included in four categories: road characteristics, traffic condition, land use, and meteorology. To investigate and evaluate these influencing factors, road dust less than 10 micrometers (RD10) was collected in 41 sites across Bogotá. The sampling points had diverse characteristics. RD10 levels varied between 1.0 and 45.8 mg/sq m with an average of 8.9 ± 8.4 mg/sq m. Lower RD10 values were observed when vegetation density was high, pavement condition good, driving speeds fast and construction activities absent. Meanwhile, RD10 increased under heavy-duty traffic influence and dry conditions. Among dust mitigation measures, management of land-use variables could be as important as traffic control and road maintenance.

Volume

71

Issue

2

First Page

268

Last Page

280

ISSN

10962247

PubMed ID

32758088

Identifier

SCOPUS_ID:85095854251

Documento original

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