Experimental determination of the respiratory tract deposition of diesel combustion particles in patients with chronic obstructive pulmonary disease

Table 4 Total measured deposited dose rate when exposure concentration is normalized to 1 μg/m ³

		Deposited dose per hour (if 1 μg/m ³)
		Number	Surface area	Mass
		(x10 ⁶)	(mm ²)	(μg)
Idle	Healthy	695 ± 127	12.3 ± 3.6	0.133 ± 0.041
	COPD	801 ± 178	16.0 ± 3.3*	0.176 ± 0.036*
Transient	Healthy	350 ± 82	19.5 ± 5.9	0.131 ± 0.040
	COPD	386 ± 83	24.5 ± 6.3	0.164 ± 0.042

ISSN: 1743-8977