Figure 3

Cigarette smoke particle size and spatial distributions. (a) Nano-scale range measured by SMPS, and (b) Micro-scale range measured by APS. (c–e) Spatial distribution of particulate smoke collected on filters placed instead of the culture inside the (c) Vitrocell, (d) RTECE with the straight conical nozzle, and (e) RTECE with the present curved nozzles.