Lung function and self-rated symptoms in healthy volunteers after exposure to hydrotreated vegetable oil (HVO) exhaust with and without particles

Table 2 The average predicted lung deposition (oral breathing) fractions of PM1 of HVO_PM+NOx and petroleum diesel

		HVO (PM1)	Diesel (PM1), Wierzbicka et al. 2014	Unit
Mass concentration (µg m⁻³)		93 ± 13	276 ± 56
Particle number concentration (µg m⁻³)		3.0 · 10⁵ ± 0.3 · 10⁵	3.9 · 10⁵ ± 0.5 · 10^5*
Surface area concentration (µg m⁻³)		9.5 · 10^–5 ± 1.4 · 10^–5	3.5 · 10^–4 ± 0.7 · 10^–4
Mass	Deposited fraction	0.40 ± 0.004	0.27 ± 0.01
Mass	Deposited dose during 3 h exposure	59.4 ± 7.4	118.5 ± 21.6	µg
Number	Deposited fraction	0.52 ± 0.002	0.45 ± 0.03
Number	Deposited dose during 3 h exposure	2.6 · 10¹¹ ± 3.1 · 10¹⁰	2.8 · 10¹¹ ± 3.5 · 10¹⁰	Particles
Surface area	Deposited fraction	0.40 ± 0.004	0.27 ± 0.01
Surface area	Deposited dose during 3 h exposure	61.9 ± 7.7	151.9 ± 27.7	cm²

The average lung deposition (oral breathing) fractions of PM1 of HVO_PM+NOx was calculated with the model presented by Rissler et al. [48] and compared to the calculated deposited doses of petroleum diesel from Wierzbicka et al. [15]. The average mass, particle number and surface area concentrations of the respective exposures are given. All values are presented as mean ± 1 std. dev
*PM0.5

ISSN: 1743-8977