Table 1

Comparison of ambient levels of particles (PM) and NOx to levels used by Crüts et al.


McCreanor et al. [5]
Crüts et al. [1]

PM2.5
28 μg/m3
300 μg/m3
Particle #
640,000 particles/cm3
1,200,000 particles/cm3
NO2
80 ppb
1,600 ppb

Valberg et al. Particle and Fibre Toxicology 2008 5:10   doi:10.1186/1743-8977-5-10