紫外光降解吲哚的研究

Research on UV Degradation of Indole

摘要: 本文首次对吲哚溶液进行紫外光降解研究，主要考查了紫外辐射强度、pH值、羟基自由基、自由基抑制剂、水中常见无机阴离子、碱度及腐殖酸等因素对吲哚降解的影响。结果表明，紫外辐射强度、羟基自由基和碱度都会促进吲哚降解，自由基抑制剂和腐殖酸起抑制作用，而常见无机阴离子对吲哚降解影响不大。对于pH值而言，当pH ≤ 7时其影响不大，当pH > 7时会加速吲哚降解。

Abstract: The effects of UV intensity, pH value, hydroxyl radical, hydroxyl radical inhibitor, ordinary orga-nicanions, alkalinity, and humic acid on the degradation efficiency of indole by ultraviolet light were studied for the first time. The results show that UV intensity, hydroxyl radical, and alkalinity can accelerate degradation efficiency, and hydroxyl radical inhibitor and humic acid inhibit it, while ordinary organic anion has little influence on it. For pH value, the degradation efficiency of indole increases when pH > 7, while it almost remains unchanged when pH ≤ 7.