Fig. 3a and b indicates
that the majority of the particles from the gas stovetop burner are
smaller than 10 nm and that the peak number concentration occurs
at particle diameters about 5 nm, increasing to larger sizes with
time. Comparing the results with the range hood off and on
(370 m3/h) in Fig. 3, the peak concentration is reduced by about
half when operating the range hood.