Record Display for the EPA National Library Catalog
RECORD NUMBER: 7 OF 265| Main Title | Aerodynamic Size Measurement of Airborne Fibers and Health Effects Implications. | |||||||||||
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| Author | Martonen., T. B. ; | |||||||||||
| CORP Author | Health Effects Research Lab., Research Triangle Park, NC. Environmental Toxicology Div. | |||||||||||
| Publisher | 1992 | |||||||||||
| Year Published | 1992 | |||||||||||
| Report Number | EPA/600/J-94/211; | |||||||||||
| Stock Number | PB94-163904 | |||||||||||
| Additional Subjects | Fibers ; Mathematical models ; Kinetics ; Air pollution effects(Humans) ; Aerosols ; Centrifuges ; Spectrometers ; Aerodynamic characteristics ; Particle size distribution ; Particle shape ; Risk assessment ; Deposition ; Respiratory diseases ; Industrial hygiene ; Asbestos ; Occupational exposure ; Performance evaluation ; Ceramic fibers ; Glass fibers ; Reprint ; Inhaled particles ; PBPK modeling | |||||||||||
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| Collation | 12p | |||||||||||
| Abstract | The constituent particles of many ambient and workplace aerosols of health effects concerns are of fibrous and aggregate geometric shapes. A theoretical model has been developed which predicts that natural and synthetic fibers may be preferentially deposited at lung airway bifurcations. Therefore, to assess potential exposure hazards it is necessary to have accurate kinetic classifications of airborne particulate matter. Centrifugal spectrometers can give direct and continuously graded measures of the aerodynamic size distributions of sampled aerosols. Herein, a mathematical description of centrifuge operations is refined to permit the characterization of irregularly shaped particles, with specific application to fibers. (Copyright (c) 1992 VSP and Society of Powder Technology, Japan.) |