Record Display for the EPA National Library Catalog

RECORD NUMBER: 293 OF 309

OLS Field Name OLS Field Data
Main Title Trace Element Concentrations on Fine Particles in the Ohio River Valley.
Author Tuncel, S. G. ; Gordon, G. E. ; Olmez, I. ; Parrington, J. R. ;
CORP Author Maryland Univ., College Park. Dept. of Chemistry.;Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Year Published 1986
Report Number EPA-R-810403; EPA/600/D-86/016;
Stock Number PB86-156528
Additional Subjects Trace elements ; Fines ; Particles ; Chemical analysis ; Air pollution ; Sampling ; Sites ; Concentration(Composition) ; X ray fluorescence ; Neutron activation analysis ; Sources ; Mass ; Ohio River Valley ; Air pollution detection
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB86-156528 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 16p
Abstract
Atmospheric particles were collected from May, 1980 to Dec., 1981 at 3 sampling sites in the Ohio River Valley (ORV). The collected samples were analyzed by x-ray fluorescence (XRF) for elemental concentrations and their masses determined by beta gauging. The XRF data and associated wind trajectories were used to select a subset (200) of ORV samples in the fine fraction for further analysis by instrumental neutron activation analysis (INAA). Combined XRF and INAA data provided concentration values for up to 40 elements. Trace element concentration ratios to Se did not show modal distributions which were previously observed in samples collected downwind from the Midwest U.S. Chemical mass balances with 11 sources are being used to fit trace element concentrations. Most particulate S is governed by the regional sulfate component. Results suggest that the distance scale is shorter than previously thought.