Deposition of sidestream cigarette smoke in the human respiratory tract. II. Deposition of ultrafine smoke particles.
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.
D000336:Aerosols; D006801:Humans; D012137:Respiratory System / Q000378:metabolism*; D014028:Tobacco Smoke Pollution / Q000032:analysis*
D000336:Aerosols; D014028:Tobacco Smoke Pollution