Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Particulate Data from the First Year of Monitoring in Phoenix. Part 2. Organic Carbon and Elemental Composition.
Author Shreffler, J. ; Suggs, J. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Publisher 1997
Year Published 1997
Report Number EPA/600/A-97/051;
Stock Number PB97-192553
Additional Subjects Air pollution monitors ; Particulate ; Organic carbon ; Trace elements ; Air pollution sampling ; Emissions ; Automobile exhaust ; Particle size ; Sulfur ; Chemical composition ; Ecological concentration ; Air filters ; Meteorological data ; Wind velocity ; Data analysis ; Data collection ; Statistical analysis ; Phoenix(Arizona)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB97-192553 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 12/22/1997
Collation 11p
This paper reviews the first year (February 1995-January 1996) of data on particulate composition, centering on the prevalence of elements and organic/elemental carbon. Typically fine mass samples are 40 percent organic carbon, 10 percent elemental carbon, and about 15 percent other elements. Carbon concentrations rise in the late fall and winter, coincident with low wind speeds that may allow automotive emissions to be trapped near the surface. At the same time, carbon rises as a proportion of the fine mass. There is some evidence of leaded gasoline use in Phoenix. Higher wind speeds in the spring and summer result in a greater proportion of crustal elements and sulfur. Comparisons of measurements from the DFPSS (cyclone) and VAPS (virtual impactor), indicate biases consistent with the notion that the cyclone is less efficient at effecting the 2.5 micrometer size cut, allowing larger particles through to the fine mass filters.