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RECORD NUMBER: 23 OF 47

OLS Field Name OLS Field Data
Main Title Development of Surrogate Lung Systems with Controlled Thermodynamic Environments to Study Hygroscopic Particles: Air Pollutants and Pharmacologic Drugs.
Author Martonen., T. B. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. Environmental Toxicology Div. ;North Carolina Univ. at Chapel Hill. Dept. of Medicine.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/505;
Stock Number PB91-199919
Additional Subjects Respiratory system ; Simulation ; Aerosols ; Hygroscopicity ; Inhalation administration ; Bronchodilator agents ; Fluid dynamics ; Sodium chloride ; Water vapor ; Temperature ; Reprints ; Pulmonary deposition ; Hygroscopic growth kinetics
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-199919 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1991
Collation 22p
Abstract
An objective of the text is to demonstrate advantages of interdisciplinary efforts, specifically, applications of engineering technology to health effects issues. The work describes the development of surrogate systems of the human lung for use in studies of hygroscopic growth kinetics and related deposition of inhaled particles. The models have become increasingly more physiologically realistic. Notable accomplishments are the successful simulations of in vivo environmental conditions, namely: (1) temperature and relative humidity atmospheres; (2) airstream profiles and thermodynamic processes; and, (3) lung morphology. Measurements of hygroscopic characteristics of a laboratory aerosol (NaCl) and bronchodilator drugs used in aerosol therapy were made using one of the models and are reported herein. The data clearly demonstrate the respective effects of respiratory tract geometry and particle chemical composition upon the behavior of inhaled substances. The surrogate lungs, offering unique research opportunities detailed within, are intended for experimental investigations that are complementary to inhalation exposures with human subjects. (Copyright (c) 1990 by Hemisphere Publishing Corporation.)