| Autor: |
Marc Pitchford, Thomas A. Cahill, Lowell L. Ashbaugh, P.J. Feeney, Robert G. Flocchini, Robert A. Eldred |
| Rok vydání: |
1981 |
| Předmět: |
|
| Zdroj: |
Atmospheric Environment (1967). 15:2017-2030 |
| ISSN: |
0004-6981 |
| DOI: |
10.1016/0004-6981(81)90235-3 |
| Popis: |
This paper describes spatial and temporal variations of airborne paniculate matter in the eight western states included in the western fine particle network (WFPN). The samples were generated by a 40-site monitoring network of remotely sited dichotomous samplers of the stacked filter and virtual design, with a coarse fraction between 15 μm and 2.5 μm dia. and a fine fraction below 2.5 μm dia. The units operate for two 72 h period each week, delivering samples analyzed gravimetrically for mass and by particle induced X-ray emission (PIXE) for elements sodium and heavier. Results are presented for the period October 1979 to May 1980, showing regional patterns of particles especially in the fine modes. A sulfur episode which occurred in the southwest is examined via trajectory analysis, while factor analysis is applied to the entire data set to generate information on particulate sources. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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