| Main Title |
Airborne Trace Elements in Great Smoky Mountains, Olympic, and Glacier National Parks. |
| Author |
Davidson, C. I. ;
Goold, W. D. ;
Mathison, T. P. ;
Wiersma, G. B. ;
Brown, K. W. ;
|
| CORP Author |
Carnegie-Mellon Univ., Pittsburgh, PA. ;EG and G Idaho, Inc., Idaho Falls. Earth and Life Sciences.;Environmental Monitoring Systems Lab., Las Vegas, NV. |
| Year Published |
1984 |
| Report Number |
EPA/600/J-85/068; |
| Stock Number |
PB85-218956 |
| Additional Subjects |
Trace elements ;
Transport properties ;
National parks ;
Air pollution ;
Sites ;
Particle size distribution ;
Sources ;
Concentration(Composition) ;
Forecasting ;
Wind(Meteorology) ;
Metals ;
Sampling ;
Exhaust emissions ;
Industrial wastes ;
Metals ;
Weathering ;
Reprints ;
Air pollution sampling ;
Air quality ;
Dry deposition ;
Smoky Mountains National Park ;
Heavy metals ;
Glacier National Park ;
Olympic National Park ;
Sinks(Biosphere)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB85-218956 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
11p |
| Abstract |
Airborne trace elements were studied at remote sites in three U.S. National Parks where crustal weathering, sea spray, and long-range transport of anthropogenic emissions were likely to influence concentrations. Levels of all elements studied except Pb were smaller in Great Smoky Mountains National Park than in Olympic or Glacier Parks. Size distribution and Teflon plate dry deposition data showed that elements derived from crustal weathering were associated with larger particles and had greater dry deposition velocities than elements that were enriched relative to crustal composition. The bulk of the mass deposition of each element resulted from the small fraction of large airborne particles. On the basis of the dry deposition data, as well as concentration data obtained within and above the forest canopy, it is hypothesized that airborne particles may undergo successive deposition/resuspension processes during transport from source to ultimate sink, complicating the measurement of net influx of a species into a region from upwind areas. (Copyright (c) 1984 American Chemical Society.) |
