Development and evaluation of a mobile laboratory for collecting short-duration near-road fine and coarse ambient particle and road dust samples.

Journal of the Air & Waste Management Association
Marco A G MartinsPetros Koutrakis

Abstract

This study used fine and coarse PM concentrator technology in a Mobile Particle Concentrator Platform (MPCP) designed and built to allow the collection of large amounts of ambient PM, enabling time-resolved speciation analysis, which would not be feasible using conventional methods. One hour of sampling yielded sufficient sample loading for trace elemental analysis using X-Ray Fluorescence (XRF). In addition, we developed a novel Road Dust Aerosolizer (RDA) sampler in order to collect PM2.5 and PM10 surface road dust in situ. This sampler aerosolizes dust from the road surface, simulating ambient road dust resuspension, resulting in measured PM composition and size more appropriately (and less labor-intensive) than those obtained from studies using bulk road dust sieved and re-suspended in the laboratory. Overall, our modified fine and coarse particle concentrators yielded good reproducibility between co-located samples and sufficient loading for trace elemental analysis. For particle mass concentration, we observed a relative error of 3% and 4% among pairs of filters for fine and coarse concentrators, respectively; confirming that the mass collected on an unweighted quartz filter in parallel with a Teflon filter will have the ...Continue Reading

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Sep 25, 2018·Environmental Pollution·Shaodan HuangPetros Koutrakis

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Citations

Dec 19, 2020·Journal of the Air & Waste Management Association·Emily SilvaPetros Koutrakis
Nov 18, 2020·Journal of the Air & Waste Management Association·Joy LawrencePetros Koutrakis
Jan 30, 2021·Journal of the Air & Waste Management Association·Tiana Carla Lopes MoreiraPetros Koutrakis

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Methods Mentioned

BETA
X-Ray

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