Record Display for the EPA National Library Catalog


Main Title Influence of Breathing Mode and Activity Level on the Regional Deposition of Inhaled Particles and Implications for Regulatory Standards (March 1986).
Author Miller, F. J. ; Martonen, T. B. ; Menache, M. G. ; Graham, R. C. ; Spektor, D. M. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. ;Northrop Services, Inc., Research Triangle Park, NC. ;New York Univ. Medical Center, NY.
Year Published 1986
Report Number EPA/600/D-86/055;
Stock Number PB86-171600
Additional Subjects Particle size ; Regulations ; Standards ; Industrial hygiene ; Risk ; Ventilation ; Exposure ; Hazardous materials ; Public health ; Respiratory systems ; Occupational safety and health ; Air quality ; Indoor air pollution ; Air pollution effects(Humans)
Library Call Number Additional Info Location Last
NTIS  PB86-171600 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
Particulate size-selective sampling is an important consideration in determining ambient air quality standards and threshold limit values for workplace exposures. Hazard evaluations, as well as risk analyses, can benefit from an improved understanding of factors affecting regional respiratory tract deposition of particles in man. Here, thoracic deposition and its component parts are examined, as a function of particulate size, for ventilation rates ranging from normal respiration to heavy exercise in individuals who are habitual mouth breathers and in those who normally employ oronasal breathing when minute ventilations exceed approximately 35 Lmin-1. Nonlinear regression techniques were used to fit logistic models of the form Y = (1+e alpha+beta log X)-1 to data from tests measuring extrathoracic (ET) and tracheobronchial (TB) deposition.