| Main Title |
Ambient Air Measurements of Hydrogen Peroxide in the California South Coast Air Basin. |
| Author |
Gay, Bruce W. ;
Darnall, Karen R. ;
Winer, Arthur M. ;
Pitts, Jr., James N. ;
Kok, Gregory L. ;
|
| CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. ;California Univ., Riverside. Statewide Air Pollution Research Center. ;Harvey Mudd Coll., Claremont, CA. Dept. of Chemistry. |
| Year Published |
1978 |
| Report Number |
EPA/600/J-78/123; |
| Stock Number |
PB-298 544 |
| Additional Subjects |
Hydrogen peroxide ;
Gas analysis ;
Chemical analysis ;
Concentration(Composition) ;
Colorimetric analysis ;
Ozone ;
Chemiluminescence ;
Smog ;
California ;
Air pollution detection ;
Reprints
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-298 544 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
6p |
| Abstract |
Hydrogen peroxide (H2O2) concentrations have been measured at two locations (Claremont and Riverside) in the California South Coast Air Basin during the months of July and August 1977. Three different analytical methods were employed: a chemiluminescent method and two colorimetric procedures. Typical mid-afternoon concentrations of H2O2 during moderate smog episodes (i.e., O3 150-200 ppb) ranged from approximately 10 to 30 ppb. These values are significantly lower than those measured in a study in Riverside in 1970. In general, maximum H2O2 concentrations were observed at about the time of the ozone maximum, but in the course of a day H2O2 levels did not occur in a fixed ratio to O3 concentrations, and in a number of cases the concentrations of H2O2 declined more slowly than those of ozone following the maximum. During this investigation signals corresponding to elevated levels of H2O2 (i.e., approximately 100 ppb) were observed by all three methods when grass or forest fire plumes impacted on the measurement site. |
| Supplementary Notes |
Pub. in Environmental Science and Technology, v12, p1077-1080, Sep 78. Prepared in cooperation with California Univ., Riverside. Statewide Air Pollution Research Center, and Harvey Mudd Coll., Claremont, CA. Dept. of Chemistry. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Ambient Air Measurements of Hydrogen Peroxide in the California South Coast Air Basin. |
| PUB Date Free Form |
Sep 78 |
| Category Codes |
7D; 68A; 99A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323765859 |
| Origin |
NTIS |
| Type |
CAT |
