| Main Title |
Evaluation of Ozonation By-Products from Two California Surface Waters. |
| Author |
Glaze, W. H. ;
Koga, M. ;
Cancilla, D. ;
Wang, K. ;
McGuire, M. J. ;
|
| CORP Author |
North Carolina Univ., Chapel Hill. Dept. of Environmental Sciences and Engineering.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.;Southern California Metropolitan Water District, Los Angeles.;National Science Foundation, Washington, DC.;California Univ., Los Angeles. Toxic Substances Research and Teaching Program. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA/600/J-89/518; |
| Stock Number |
PB91-183178 |
| Additional Subjects |
Surface waters ;
Ozonization ;
Water treatment ;
Chemical analysis ;
Field tests ;
Laboratory tests ;
Byproducts ;
Contaminants ;
Aqueducts ;
Aldehydes ;
Ketones ;
Bromoform ;
Reprints ;
Southern Region(California)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB91-183178 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
11p |
| Abstract |
Ozonation by-products were analyzed for two surface water sources in Southern California--Los Angeles Aqueduct Water (LAAW) and State Project Water (SPW). Included are data obtained when LAAW was being treated at the Los Angeles Aqueduct Filtration Plant and similar data obtained during a two-day experiment in which the plant was treating SPW. Some batch-scale ozonation studies are also reported. Ozonation by-products were monitored using three methods: closed-loop stripping analysis, nonionic resin accumulation, and a direct aqueous derivatization method for low-molecular-weight aldehydes, each followed by gas chromatography-mass spectrometry analysis of the extracts. The major neutral by-products appear to be aliphatic aldehydes, but the levels are unexpectedly low in SPW compared with LAAW treated under similar conditions. Low levels of several other compounds were found in ozonated water, including bromoform and some compounds tentatively identified as ketones. |
