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Main Title Ambient Sulfate Aerosol Deposition in Man: Modeling the Influence of Hygroscopicity.
Author Martonen, T. B. ; Barnett, A. E. ; Miller, F. J. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. ;Northrop Services, Inc., Research Triangle Park, NC.
Year Published 1985
Report Number EPA/600/J-85/303;
Stock Number PB86-163383
Additional Subjects Sulfates ; Deposition ; Aerosols ; Humans ; Lung ; Moisture ; Modeling ; Reprints ; Air pollution effects(Humans) ; Hygroscopicity
Library Call Number Additional Info Location Last
NTIS  PB86-163383 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 16p
Abstract Atmospheric sulfate aerosols (H2SO4, (NH4)2SO4, and NH4HSO4) are of international concern because of their global prevalence and potential irritant or toxic effects on humans. To assess hazards following inhalation exposure, the total dose delivered to the human respiratory tract and its regional distribution must be determined. The mass median aerodynamic diameter of the inhaled aerosol will influence the sites of deposition in the respiratory tract. Atmospheric sulfate aerosols are hygroscopic and will have changing particle sizes and densities as they absorb water vapor in the humid environment of the human respiratory tract. Experimental and theoretical data that describe particle size as a function of temperature and relative humidity were used in computer subroutines of an aerosol deposition model in order to calculate the dose dispersion of H2SO4, (NH4)2SO4, and NH4HSO4 aerosols in man. Different temperature and relative humidity environments that approximately correspond to nasal and oral breathing were studied.
Supplementary Notes Pub. in Environmental Health Perspectives, v63 p11-24 Nov 85. Prepared in cooperation with Northrop Services, Inc., Research Triangle Park, NC.
NTIS Title Notes Journal article.
Title Annotations Reprint: Ambient Sulfate Aerosol Deposition in Man: Modeling the Influence of Hygroscopicity.
PUB Date Free Form c1985
Category Codes 6T; 57Y; 68A
NTIS Prices PC A02/MF A01
Primary Description 600/11
Document Type NT
Cataloging Source NTIS/MT
Control Number 612915587
Origin NTIS
Type CAT