OLS : Record


Main Title Atmospheric transport and deposition of polychlorinated dibenzo-p-dioxins and dibenzofurans /
Author Hites, Ronald A.; Harless, R. L.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. ;Indiana Univ. at Bloomington.
Publisher Atmospheric Research and Exposure Assessment Laboratory, U.S. Environmental Protection Agency,
Place Published Research Triangle Park, N.C.
Year Published 1991
Report Number EPA/600/3-91/002
Stock Number PB91-144667
OCLC Number 45632451
Subjects Dioxins; Furans; Deposition; Pollution transport; Air pollution monitoring; Urban areas; Rural areas; Bloomington(Indiana); Indiannapolis(Indiana); Trout Lake(Wisconsin); Rain; Incinerators; Vapor pressure; Tables(Data); Graphs(Charts)
Subject Added Ent Polychlorinated dibenzo-p-dioxins.; Polychlorinated dibenzofurans.
Library   Call Number Additional Info Location Date Modified
ERBD PB91-144667 NERL/ESD-LV Library/Las Vegas,NV 12/29/2000
NTIS PB91-144667 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 122 pages ; 28 cm
Abstract Polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) are toxic compounds which are dispersed through the environment by atmospheric transport and deposition. It has been previously shown that there is a varying mixture of these compounds produced by combustion (the source of these compounds). Therefore, the goal of the project was to study PCDD/F in ambient air and rain samples (the transport media linking source to sink) in an effort to enhance the understanding of the physical/chemical parameters controlling the transformation which take place during atmospheric transport and deposition. Analytical methods included high-volume air sampling, wet-only rain sampling, column chromatographic cleanup, and an electron capture, negative ionization form of gas chromatographic mass spectrometry. Air and rain samples were divided into vaporphase and particle-bound or dissolved and particle-bound fractions, respectively. The results showed that total PCDD/F concentrations in Bloomington, Indiana, has a geometric standard deviation range from 1.4 to 4.4 pg/cu m in air and from 63 to 220 pg/L in rainwater. The vapor-to-particle ratio for individual congeners ranged from 0.01 to 30. The ratio is controlled by the individual congener's vapor pressure and the ambient air temperature. Estimates of washout and the Henry's law constants were obtained using average ambient air and rain data.
Notes Caption title. "January 1991." "EPA/600/3-91/002." "Robert Harless, project officer." Microfiche.
Supplementary Notes Prepared in cooperation with Indiana Univ. at Bloomington.
Author Added Ent
Harless, Robert.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Research and Development. ; Atmospheric Research and Exposure Assessment Laboratory.
PUB Date Free Form 1991.
NTIS Prices PC A06/MF A01
BIB Level m
OCLC Time Stamp 20001228180732
Cataloging Source OCLC/T
Language eng
Origin OCLC
OCLC Rec Leader 01305nam 2200313Ka 45020