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Some Impact Factors of Generation Rules of Hydroxyl Radicals in O3/UV System

WU Di1, LIU Miao1, DONG De-ming1, DIAO Wei-li1, JIAO Xin-qian1, WANG Li1,QIAN Jin2   

  1. 1.College of Environment and Resources, Jilin University ,Changchun 130021,China；2.Environmentel Supervision Group,Economic & Technological Development Ozone of Changchun,Changchun 130033,China
  • Received:2006-04-15 Revised:1900-01-01 Online:2007-01-26 Published:2007-01-26
  • Contact: LIU Miao

Abstract: O3/UV process is a kind of AOPs, which combined O3 with ultraviolet radiation, under the radiation of UV, O3 is accelerated its decompounding course remarkably, and generated the strong oxidant hydroxyl radicals in solution. High performance liquid chromatography (HPLC) and fluorescence detector was used to determine salicylic acid (SA) and one of its hydroxylated products, 2,5-dihydroxybenzoic acid (2,5-DHBA), in this way, hydroxyl radicals was determined indirectly. Through the determination of the 2,5-DHBA at different reacting times, pH values and initial concentrations of SA, effect of these factors on the generation rules of hydroxyl radicals were investigated in O3/UV process.

Key words: high performance liquid chromatograph, hydroxyl radicals, O3/UV system

CLC Number: 

  • X52
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