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Main Title Oxygen isotopes in atmospheric sulfates, sulfur dioxide and water vapors : field measurements, July 1975 /
Author Holt, B. ; Bouchard, M. ; Cunningham, P. ; Engelkemeir, A. ; Nielsen., E.
Other Authors
Author Title of a Work
Holt, B.
CORP Author Argonne National Lab., Ill.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1978
Report Number PB281014; EPA-600/3-78-045
Stock Number PB-281 014
OCLC Number 52420560
Subjects Oxygen--Isotopes ; Sulfur dioxide ; Sulfates ; Air--Pollution--Illinois ; Air--Pollution ; Oxygen--Isotopes ; Sulfates ; Sulfur dioxide ; Illinois
Additional Subjects Oxygen isotopes ; Gas analysis ; Chemical analysis ; Sulfates ; Sulfur dioxide ; Water vapor ; Particles ; Aerosols ; Atmospheric diffusion ; Transport properties ; Missouri ; Field tests ; Sites ; Sampling ; Graphs ; Illinois ; Air pollution detection ; Oxygen 18 ; Saint Louis(Missouri) ; Air pollution sampling ; Auburn(Illinois) ; Glasgow(Illinois)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-3-78-045 Headquarters Library/Washington,DC 07/22/2014
EKBD  EPA-600/3-78-045 Research Triangle Park Library/RTP, NC 07/18/2003
ELBD ARCHIVE EPA 600-3-78-045 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-3-78-045 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-281 014 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 25 p. : ill. ; 28 cm.
Oxygen isotope ratios were determined for atmospheric samples of sulfate aerosols, sulfur dioxide, and water vapor collected simultaneously during a six-day period in July, 1975, at St. Louis, MO; Auburn, IL; and Glasgow, IL. The collection sites were located about 100km apart. Concerted variations in isotopic and concentration results were found for the three sites, demonstrating an apparent regional impact on the quality and quantity of particulate sulfate in the atmosphere. At all three sites, the oxygen-18 enrichments in suspended sulfates clearly varied inversely with sulfate concentration. This variation suggests that sulfates in cleaner air may have a different origin than sulfates in more polluted air masses. Samples collected during a period of local thunderstorm activity showed an abrupt increase in the oxygen-18 composition of particulate sulfate, but little effect on the isotopic composition of ambient water vapor. The lack of positive correlation between oxygen-18 variations in aerosol sulfate and oxygen-18 variations in water vapor suggests that the aerosol sulfate was not formed predominantly from the ambient water in the air masses from which it was sampled.
"EPA-600/3-78-045." "April 1978." "IAG-D6-F024." PB 281 014--NTIS. Includes bibliographical references (p. 24).