| Main Title |
Local and Regional Contributions to Urban Particulate Matter. |
| Author |
Batterman, S. ;
Fay, J. A. ;
Golomb, D. ;
|
| CORP Author |
Massachusetts Inst. of Tech., Cambridge. Energy Lab.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| Year Published |
1986 |
| Report Number |
EPA/600/3-86/052; |
| Stock Number |
PB86-236965 |
| Additional Subjects |
Urban areas ;
Air pollution ;
Atmospheric models ;
Sulfates ;
Aerosols ;
Particle size ;
Concentration(Composition) ;
Atmospheric dispersion ;
Particulate sampling ;
Environmental monitoring ;
St Louis(Missouri) ;
Philadelphia(Pennsylvania) ;
Inhalation
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB86-236965 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
87p |
| Abstract |
The report summarizes the data analysis of two extensive field studies on urban particulate matter, the 1974-77 St. Louis (RAPS) and the July/August 1982 Philadelphia (PAFS) studies. The major conclusion of the study is that in both cities the majority (more than 50%) of the total mass collected by dichotomous samplers is of regional, not local, origin. The regional share is about equally large for long-term (yearly, seasonal, monthly) and short-term (24-hours) averaging of concentrations. In the fine fraction, the regional component is even larger, 60% in St. Louis and 83% in Philadelphia. This conclusion is supported primarily by the observation that with the exception of a single site in both St. Louis and Philadelphia, all other sites within the extensive monitoring network, including remote rural sites, show a very low gradient of concentrations, indicating that the majority of collected aerosols does not originate from local sources, but must come from distant, regional sources that impact all monitors equally. |
| Supplementary Notes |
Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| NTIS Title Notes |
Final rept. Mar 85-Jun 86. |
| PUB Date Free Form |
Aug 86 |
| Category Codes |
4A; 68A; 55E |
| NTIS Prices |
PC A05/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
631011651 |
| Origin |
NTIS |
| Type |
CAT |
