Record Display for the EPA National Library Catalog

RECORD NUMBER: 463 OF 833

OLS Field Name OLS Field Data
Main Title Laboratory and Field Evaluation of Crystallized Dow 704 Oil on the Performance of the WINS PM2.5 Fractionator.
Author Vanderpool, R. W. ; Byrd, L. A. ; Wiener, R. W. ; Hunike, E. T. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC.
Publisher 2003
Year Published 2003
Stock Number PB2004-106817
Additional Subjects Crystallized oil ; Fractionators ; Air pollution monitors ; Performance evaluation ; Diffusion oils ; Particle bounces ; Laboratory tests ; Field tests ; Dow 704 oil ; WINS fractionator ; WINS separator ; WINS cutpoint ; Dioctyl sebacate(DOS)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2004-106817 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 10/29/2004
Collation 24p
Abstract
Subsequent to the 1997 promulgation of the Federal Reference Method (FRM) for monitoring PM(sub 2.5) in ambient air, the United States Environmental Protection Agency (USEPA) received reports that the Dow 704 diffusion oil used in the method's WINS fractionator would occasionally crystallize during field use-particularly under wintertime conditions. While the USEPA's survey of site operators revealed that the frequency of occurrence on a nationwide basis was low, concerns were raised that crystallization of the Dow 704 oil during a given sampling event may adversely affect the event's data quality due to possible particle bounce from the crystallized impaction surface. In response to these concerns, the USEPA and the Connecticut Department of Environmental Protection (CT DEP) jointly conducted a series of specialized tests to determine if crystallized oil adversely affected the performance of the WINS fractionators. In the laboratory, an experimental setup used dry ice to artificially induce crystallization of the diffusion oil under controlled conditions.