| Main Title |
Sources and transport of trace metals in urban aerosols / |
| Author |
Winchester, John W. ;
Nelson, J. William
|
| Other Authors |
|
| CORP Author |
Florida State Univ., Tallahassee. Dept. of Oceanography.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
| Publisher |
Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
| Year Published |
1979 |
| Report Number |
EPA/600/3-79/019; EPA-R-802132 |
| Stock Number |
PB-294 838 |
| Subjects |
Aerosols--Environmental aspects
|
| Additional Subjects |
Gas analysis ;
Trace elements ;
Metals ;
Particle size distribution ;
Chemical analysis ;
Sampling ;
Transport properties ;
Aerosols ;
Sources ;
Urban areas ;
Titanium ;
Lead(Metal) ;
Laboratory equipment ;
Public health ;
Respiratory system ;
Missouri ;
Air pollution detection ;
Saint Louis(Missouri) ;
Air pollution effects(Humans) ;
Indoor air pollution ;
Regional Air Pollution Study
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-294 838 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
71 pages : illustrations ; 28 cm. |
| Abstract |
A methodology was developed, tested, and applied to the identification of trace element aerosol sources and trace element aerosol transport phenomena. The method uses light weight and portable field sampling equipment, and results in the acquisition of large data sets suitable for statistical analysis and the testing of aerosol transport models. Aerosol sampling in the ambient atmosphere was accomplished through a combination of time-sequenced filter collections with hourly resolution, and fractionated aerosol collections with 0.25 micrometer resolution. Elemental analysis was performed with particle induced X-ray emission, a sensitive and rapid method. Aerosol characterization studies were focussed on St. Louis, Missouri, during the Regional Air Pollution Study. Trace element pollutants were distinguished from their natural components on the basis of particle size distributions. Statistical analysis of time-sequenced concentration measurements revealed four distinct pollution sources for lead. A related analysis demonstrated that meteorological factors controlling the transport of titanium aerosol across the city could be identified. Extensions of the meteorology were applied to (1) the determination of trace element pollution deposition in the human respiratory tract through direct sampling of exhaled breath, (2) indoor environments, and (3) nonurban continental and marine atmospheres. |
| Notes |
Microfiche. |
| Place Published |
Research Triangle Park, N.C. : |
| Title Ser Add Ent |
Environmental protection technology series ; |
| PUB Date Free Form |
1979. |
| Series Title Untraced |
EPA 600/2 ; 79-019 |
| NTIS Prices |
PC A05/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20031223130756 |
| Language |
eng |
| Origin |
NTIS |
| Type |
MERGE |
| OCLC Rec Leader |
00987nam 2200253Ka 45020 |
