The bulletin of mathematical biophysics

, Volume 12, Issue 2, pp 161–169 | Cite as

On the removal of air-borne droplets by the human respiratory tract: II. The nasal passages

  • H. D. Landahl


Theoretical considerations lead to the calculation of the amounts of air-borne materials removed by the various regions of the human nasal passages. These calculations are presented and discussed in the light of available data and lead to the conclusion that impaction due to inertia is the principle factor in the removal of the air-borne particles of diameters greater than one micron.


Methylene Blue Cloud Fraction Nasal Passage Human Respiratory Tract Rectangular Tube 
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  1. Davies, C. N. 1946. “Filtration of Droplets in the Nose of the Rabbit.”Proc. Roy. Soc. B.,133, 282–299.CrossRefGoogle Scholar
  2. Hellmann, K. 1927. “Untersuchen zur normalen und pathologischen Physiologie der Nase.”Zeitschrift für Laryngologie,15, 1–68.Google Scholar
  3. Landahl, H. D. 1950. “On the Removal of Air-Borne Droplets by the Human Respiratory Tract: The Lung.”Bull. Math. Biophysics,12, 43–56.MathSciNetGoogle Scholar
  4. — and S Black. 1947. “Penetration of Air-Borne Particulates through the Human Nose.”Jour. Indust. Hyg. and Toxicol.,29, 269–277.Google Scholar
  5. — and R. G. Herrmann. 1949. “Sampling of Liquid Aerosols by Wires, Cylinders, and Slides, and the Efficiency of Impaction of the Droplets.”Jour Colloid Sci.,4, 103–136.CrossRefGoogle Scholar
  6. — and T. Tracewell. 1949. “Penetration of Air-Borne Particulates through the Human Nose. II.”Jour. Indust. Hyg. and Toxicol.,31, 55–59.Google Scholar
  7. Proetz, A. W. 1941.Applied Physiology of the Nose. St. Louis: Annals Publishing Co.Google Scholar

Copyright information

© The University of Chicago Press 1950

Authors and Affiliations

  • H. D. Landahl
    • 1
    • 2
  1. 1.Committee on Mathematical BiologyThe University of ChicagoChicgoUSA
  2. 2.The Toxicity LaboratoryThe University of ChicagoChicagoUSA

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