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Table 1 Characterization of exposure concentrations in the chamber with and without filtration of the inlet air from an urban street

From: Controlled exposure to particulate matter from urban street air is associated with decreased vasodilation and heart rate variability in overweight and older adults

 

Non-filtered air

Particle-filtered air

Particle number concentration, CPC (number/cm3)

23174 ± 6857

1779 ± 773

PM2.5 continuously by Dusttrak (μg/m3)

24 ± 13

3.0 ± 1.2

PM2.5 filter based (μg/m3)

18 ± 3

1.5 ± 1.5

Black carbon from PM2.5 filters (μg/m3)

3.9 ± 0.9

0.3 ± 0.3

Sum of PAH filter based (ng/m3)

2.5 ± 1.1

0.025 ± 0.025

NO (μg/m3)

31 ± 19

33 ± 14

NO2 (μg/m3)

45 ± 13

26 ± 26

NOx (μg/m3)

77 ± 31

59 ± 38

  1. Values are mean ± SD, where SD corresponds to the day-to-day variation.
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Particle and Fibre Toxicology

ISSN: 1743-8977

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