Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Elemental tracers applied to transport of aerosal from midwest to northeast {Microfiche}
Author Rahn, Kenneth A. ; Wunschel, K. R. ; Lowenthal, D. H.
Other Authors
Author Title of a Work
Wunschel, Kenneth R.
Lowenthal, Douglas H.
CORP Author Rhode Island Univ., Narragansett. Center for Atmospheric Chemistry Studies.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory,
Year Published 1986
Report Number EPA/600/3-86/015
Stock Number PB86-168812
Subjects Aerosol propellants ; Gases--Analysis
Additional Subjects Aerosols ; Tracers ; Atmospheric motion ; Turbulence ; Transport properties ; Atmospheric transmissivity ; Midwest region(United States) ; Northeast region(United States)
Library Call Number Additional Info Location Last
NTIS  PB86-168812 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 153 p. ; 28 cm.
From samples in Ohio and Pennsylvania, a regional elemental tracer system found two midwestern signatures which later showed that aerosol is routinely transported from Midwest to Northeast in distinct pulses of 2-8 days. The system was confirmed semi-quantitatively during CAPTEX '83, where pulses of tracer gas from Ohio appearing in New England were always accompanied by strong maxima of midwestern aerosol. Regional signatures were found to be stable: during transport from Midwest to Northeast, all four quantifiable elemental ratios changed by less than 25%. Regional least-squares apportionments were found to be insensitive to a variety of factors such as weighting scheme, scales of signatures, random elemental perturbations, duration of samples, local sources of V, etc. Factor and cluster analysis were found to be only moderately useful for determining regional signatures. In eastern North America, As/Se, noncr. V/Se, and In/Se have greater tracer power than Sb/Se, Zn/Se, and noncr. Mn/Se.
Caption title. "Mar.1986." "EPA/600/3-86/015." Microfiche.