| Main Title |
Rapid Measurement of Aqueous Hydroxyl Radical Concentrations in Steady-State HO Flux Systems. |
| Author |
Ireland, J. ;
Valinieks, J. ;
|
| CORP Author |
Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab. ;Riga Technical Univ. (Latvia). Faculty of Chemical Technology. |
| Publisher |
c1992 |
| Year Published |
1992 |
| Report Number |
EPA/600/J-92/402; |
| Stock Number |
PB93-131779 |
| Additional Subjects |
Hydroxyl radicals ;
Chemical analysis ;
Water pollution detection ;
Oxidation ;
Steady state ;
Aqueous solutions ;
Water treatment ;
Gas chromatography ;
Mass spectroscopy ;
Nitrogen organic compounds ;
Water pollution sampling ;
Oxidation ;
Electrophoresis ;
Reprints ;
Nitrone/(pyridyl-oxide)-N-butyl
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB93-131779 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
16p |
| Abstract |
In recent years the hydroxyl radical (HO.) has become the focus of a significant body of research concerning the chemical oxidation of anthropogenic organic compounds in the environment. The spin-trap compound alpha-(4-pyridyl-1-oxide)-N-tert-butyl-nitrone (4-POBN) is utilized for the detection and quantitation of the hydroxyl radical (HO) in aqueous solution. Capillary electrophoresis enables rapid analysis of the probe compound. The thermally unstable HO radical adduct of 4-POBN can be unequivocally identified by gas chromatography / mass spectrometry analysis of it's pentafluorobenzyl ether. The minimum steady-state flux of HO. is determined in several advanced oxidation systems including photo-Fenton, ozone, and titanium dioxide based radical generators. |
