Science Inventory

RAPID MEASUREMENT OF AQUEOUS HYDROXYL RADICAL CONCENTRATIONS IN STEADY-STATE HO· FLUX SYSTEMS

Citation:

Ireland*, J C. AND J. Valinieks*. RAPID MEASUREMENT OF AQUEOUS HYDROXYL RADICAL CONCENTRATIONS IN STEADY-STATE HO· FLUX SYSTEMS. doi:10.1016/0045-653, H. Fiedler, L.L. Needham (ed.), CHEMOSPHERE. Elsevier BV, AMSTERDAM, Netherlands, 25(3):383-396, (1992).

Impact/Purpose:

to present information

Description:

The spin-trap compound a-(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.

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Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Product Published Date: 08/01/1992
Record Last Revised: 07/30/2008
OMB Category: Other
Record ID: 128953

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

TECHNOLOGY TRANSFER AND SUPPORT DIVISION

TECHNICAL OPERATIONS BRANCH