Record Display for the EPA National Library Catalog

RECORD NUMBER: 6 OF 9

OLS Field Name OLS Field Data
Main Title Oxidant formation in the generation of ozone /
Author Gay, Bruce W., Jr. ; Namie, George R. ; Bufalini, Joseph J.
Other Authors
Author Title of a Work
Namie, George R.
Bufalini, Joseph J.
Gay, Bruce W., Jr.
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1979
Report Number EPA-600/3-79-016
Stock Number PB-293 269
OCLC Number 52642677
Subjects Ozone--Analysis.
Additional Subjects Air pollution ; Ozone ; Oxidizers ; Gas analysis ; Ultraviolet spectroscopy ; Photolysis ; Electric discharge ; Samples ; Colorimetric analysis
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101AEH9.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EHAM  EPA-600/3-79-016 Region 1 Library/Boston,MA 05/25/2016
EJAD  EPA 600/3-79-016 Region 3 Library/Philadelphia, PA 01/30/2004
EJBD ARCHIVE EPA 600-3-79-016 Headquarters Library/Washington,DC 05/13/2013
EJBD  EPA 600-3-79-016 c.1 Headquarters Library/Washington,DC 04/22/2014
EJED  EPA 600/3-79/016 OCSPP Chemical Library/Washington,DC 03/25/2005
EKBD  EPA-600/3-79-016 Research Triangle Park Library/RTP, NC 07/18/2003
ERAD  EPA 600/3-79-016 Region 9 Library/San Francisco,CA 10/22/2012 DISPERSAL
ESAD  EPA 600-3-79-016 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-293 269 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation vi, 18 pages : charts ; 28 cm.
Abstract
Ozone samples generated by UV photolysis and silent electric discharge upon air or oxygen were examined to determine if other oxidants were formed. Chemical and physical methods (IR and UV spectroscopy) failed to show the presence of such oxidants. Absence of such oxidants was also indicated by the excellent agreement between analytical results from UV photometry and gas phase titration. Ozone measurements by the colorimetric 1 percent neutral buffered potassium iodide method were biased 10-30 percent positive compared to UV photometry. A colorimetric method employing a solution of cyclohexene-dimethanol and ferrous ammonium sulfate (CHD), which is claimed to measure singlet oxygen and/or other oxidants along with ozone, proved to have a different stoichiometry in the presence and absence of oxygen. These latter results were interpreted to mean that the high response of CHD to ozonized air/oxygen streams does not indicate the presence of nonozone oxidants; rather, it reflects a greater-than-stoichiometric response of the CHD reagent to ozone.
Notes
"EPA-600/3-79-016"--Cover. "February 1979"--Cover. "Atmospheric Chemistry and Physics Division Environmental Sciences Research Laboratory." Includes bibliographical references.
Contents Notes
Ozone samples generated by UV photolysis and silent electric discharge upon air or oxygen were examined to determine if other oxidants were formed. Chemical and physical methods (IR and UV spectroscopy) failed to show the presence of such oxidants. Absence of such oxidants was also indicated by the excellent agreement between analytical results from UV photometry and gas phase titration. Ozone measurements by the colorimetric 1 percent neutral buffered potassium iodide method was biased 10-30 percent positive compared to UV photometry. A colorimetric method employing a solution of cyclohexene-dimethanol and ferrous ammonium sulfate (CHD), which is claimed to measure singlet oxygen and/or other oxidants along with ozone, proved to have a different stoichiometry in the presence and absence of oxygen. These latter results were interpreted to mean that the high response of CHD to ozonized air/oxygen streams does not indicate the presence of non-ozone oxidants; rather it reflects a greater-than-stoichiometric response of the CHD reagent to ozone.