| Main Title |
Oxidant formation in the generation of ozone / |
| Author |
Gay, Bruce W., Jr. ;
Namie, George R. ;
Bufalini, Joseph J.
|
| Other Authors |
|
| 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 |
|
| 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 |
| 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 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| 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. |
| Place Published |
Research Triangle Park, N.C. |
| Access Notes |
Also available via the World Wide Web. |
| Corporate Au Added Ent |
Environmental Sciences Research Laboratory.; Environmental Sciences Research Laboratory. Atmospheric Chemistry and Physics Division.; United States. Environmental Protection Agency. |
| Title Ser Add Ent |
Research reporting series. Ecological research ; EPA-600/3-79-016. |
| PUB Date Free Form |
1979 |
| Series Title Traced |
Research reporting series Ecological research; EPA-600/3-79-016 |
| Series Title Untraced |
Research reporting series. 3, Ecological research ; EPA-600/3-79-016 |
| NTIS Prices |
PC A02/MF A01 |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20160419143644 |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
02832cam 2200409Ka 45020 |
