Evaluation of In Vitro Cytoxicity and Genotoxicity of Size-Fractionated Air Particles Sampled during Road Tunnel Construction

Table 1

Air particle concentrations in 7 tunnels under construction in an area of Central Italy. For every tunnel, 5 fractions of different diameters were collected.

Tunnel	PM (mg/m^3)
	A: ø > 2.5 μm	B: 1.0 < ø < 2.5 μm	C: 0.5 < ø < 1.0 μm	D: 0.25 < ø < 0.50 μm	AF: ø < 0.25 μm	Total
1	0.702	0.15	0.086	0.066	0.322	1.326
2	3.307	1.336	0.713	0.386	0.422	6.164
3	0.549	0.15	0.058	0.054	0.175	0.986
4	0.834	0.287	0.081	0.06	0.347	1.609
5	0.742	0.243	0.105	0.059	0.323	1.472
6	0.369	0.085	0.021	0.021	0.306	0.802
7	0.689	0.202	0.037	0.038	2.038	3.004