title: Deposition of sidestream cigarette smoke in the human respiratory tract. II. Deposition of ultrafine smoke particles.
abstract: Sidestream cigarette smoke was generated into an inhalation chamber from which five normal male volunteers inhaled the smoke. Size distribution of the smoke aerosol was: count median diameter, 0.11 micron, mass median diameter 0.43 micron. Deposition fraction measured as concentration difference for each size fraction between inhaled and exhaled aerosol for each size interval was: 0.075 micron, 0.24 +/- 0.04; 0.13 micron, 0.15 +/- 0.04; 0.24 micron, 0.10 +/- 0.04; and 0.42 micron, 0.07 +/- 0.02. The declining deposition fraction as size approaches 0.5 micron is consistent with previous theoretical and experimental data.
mesh_terms: D000336:Aerosols; D006801:Humans; D012137:Respiratory System / Q000378:metabolism*; D014028:Tobacco Smoke Pollution / Q000032:analysis*
chemical_list: D000336:Aerosols; D014028:Tobacco Smoke Pollution