Nanoaerosols Including Radon Decay Products in Outdoor and Indoor Air at a Suburban Site

Figure 17

Time run of: (a) total number concentration of general aerosol particles (𝐶^Ngen(tot)) and geometric mean values of their diameters (𝑑_GM), (b) activity concentration of radon (𝐶^ARn) and equilibrium equivalent activity concentration of radon decay products (𝐶^ARnDP), (c) number fraction of particles smaller than 10 nm (𝑥_gen(<10)) and smaller than 20 nm (𝑥_gen(<20)), (d) activity fraction of the unattached RnDP (𝑓^un) and number fraction of the unattached RnDP (𝑥^un), (e) activity concentrations of the unattached RnDP atoms (𝐶^Aun_218Po, 𝐶^Aun_214Pb, and 𝐶^Aun_214Bi), (f) activity concentrations of the attached RnDP atoms (𝐶^Aatt_218Po, 𝐶^Aatt_214Pb, and 𝐶^Aatt_214Bi), (g) number concentrations of the unattached RnDP atoms (𝐶^Nun_218Po, 𝐶^Nun_214Pb, and 𝐶^Nun_214Bi), and (h) number concentrations of the attached RnDP atoms (𝐶^Natt_218Po, 𝐶^Natt_214Pb, and 𝐶^Natt_214Bi), in indoor air on November 22 (cooking a “risotto” dish from 14:20 to 15:00).