Hydroxyl radical measurements in a photochemical reactor by laser-induced fluorescence

✍ Scribed by C. H. Wu; Charles C. Wang; S. M. Japar; L. I. Davis JR.; M. Hanabusa; D. Killinger; H. Niki; B. Weinstock

• Publisher: John Wiley and Sons
• Year: 1976
• Tongue: English
• Weight: 640 KB
• Volume: 8
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550080511

✦ Synopsis

Abstract

Measurements of hydroxyl radical (HO) concentrations in ambient air by the technique of laser‐induced fluorescence have been recently reported. The present study was undertaken to provide an independent test of the validity of those measurements. A photochemical reactor was used to provide a source of HO, and the concentration of HO in the reactor was determined by the laser‐induced fluorescence technique. The HO concentration was also deduced from measured hydrocarbon decay rates in the reactor. There was agreement between the HO concentrations obtained by these two different methods, thus providing further validation of the fluorescence method. Some studies of HO fluorescence efficiency as well as of possible interferences with the fluorescence measurements are reported.