PMID: 625611Jan 1, 1978Paper

Determination of binary diffusion coefficients of various gas species used in respiratory physiology

Respiration Physiology
H WorthJ Piiper

Abstract

In order to provide data required for quantitative analysis of gas diffusion in lung airways, diffusion of He, CO, O2, CO2 and SF6 in various gases used in respiratory physiology was studied in vitro at 37 degrees C and 25 degrees C. The gases were allowed to mix by diffusion in a closed cylindrical tube (length 2 m, internal diameter 1 cm), one half of which was initially filled with 1% test gas in a second gas and the other half of which was filled with the second gas only. Kinetics of diffusional equilibration was determined by withdrawal of spot samples analyzed by gas chromatography. The binary (mutual) diffusion coefficients (D) computed there from were in most cases in good agreement with values calculated on the basis of the Chapman-Enskog theory.

References

Jan 1, 1971·Annual Review of Physiology·J Piiper, P Scheid
Jan 1, 1970·Respiration Physiology·O D WangensteenH Rahn

Citations

Sep 1, 1982·International Journal of Bio-medical Computing·A Ben Jebria, M Bres
Jan 1, 1987·International Journal of Bio-medical Computing·A Ben Jebria
Aug 1, 1979·Respiration Physiology·S H Hobbs, E N Lightfoot
Feb 3, 2005·Journal of Aerosol Medicine : the Official Journal of the International Society for Aerosols in Medicine·T E Corcoran, Stephan Gamard
Apr 1, 1980·British Journal of Diseases of the Chest·K Horsfield
May 1, 1990·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·G C FullerS J Withy
Oct 8, 2005·Journal of Applied Physiology·Hye-Won ShinSteven C George

Related Concepts

Diffusion
Mathematics
Respiration

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