Main Title |
Effects of Activated Charcoal Filtration and Ozonation on Hydrocarbon and Carbonyl Levels of Ambient Air Used in Controlled-Exposure Chamber Studies of Air Pollutant Human Health Effects. |
Author |
Tilton, B. E. ;
Bufalini, J. J. ;
Meeks, S. A. ;
Gay, B. W. ;
|
CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. |
Publisher |
1994 |
Year Published |
1994 |
Report Number |
EPA/600/A-94/166; |
Stock Number |
PB94-210523 |
Additional Subjects |
Air pollution effects(Humans) ;
Test chambers ;
Activated carbon treatment ;
Ozonization ;
Carbonyl compounds ;
Hydrocarbons ;
Ozone ;
Air pollution sampling ;
Health risks ;
Respiratory diseases ;
Silica gel ;
VOCs(Volatile organic compounds)
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB94-210523 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
8p |
Abstract |
Air sampling experiments were done in 1985, 1987, and 1993 at the human-exposure chamber facility of the U.S. EPA Health Effects Research Laboratory in Chapel Hill, NC. Measurements of volatile organic compounds (VOCs) by GC-FID and aldehyde measurements by the DNPH silica gel cartridge method were made, comparing levels at the outside air intake to levels in the human controlled-exposure chamber. Ambient air passed through activated-charcoal filters can contain varying residual amounts of water vapor and gaseous pollutants such as hydrocarbons, oxygenates, and other organic and inorganic species. When the charcoal-filtered air stream is exposed to high-intensity radiation to generate ozone for use in human controlled-exposure experiments, there may be formation of compounds other than ozone. Results of measurements of some compounds of interest are discussed. |
NTIS Title Notes |
Symposium paper. |
Category Codes |
94K; 68A; 68G |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
428724589 |
Origin |
NTIS |
Type |
CAT |