羟基自由基的测定及其对过氧化氢漂白的影响  

The Measurement of Hydroxyl Radicals and Its Effects on Hydrogen Peroxide Bleaching

作　　者：张树滨[1] 邱玉桂[1] 陈春霞[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室植物资源研究室,广州510640

出　　处：《造纸科学与技术》2004年第6期24-27,43,共5页Paper Science & Technology

基　　金：国家自然科学基金 (2 98760 12 );广东省自然科学基金 (0 2 0 93 5;980 5 96)资助课题

摘　　要：用化学荧光法研究四种填料对H2 O2 漂白过程中羟基自由基 (·OH)的行为及对H2 O2 漂白的效果的影响。结果表明 ,用邻苯二甲酰肼 (即PtH)作为羟基自由基的稳定剂是可行的。反应时间为 40min时羟基自由基的相对浓度为最高 ,各种填料对H2 O2 的稳定性及漂白效果等的影响不同。By means of chemiluminescence, the production of hydroxyl radicals(·OH) and its effect on bleaching result in the hydrogen peroxide bleaching with the addition of fillers are studied. The results reveal that it's feasible to use phthalhydrazide(PtH) as the stabilizing reagent of hydroxyl radicals. The relative concentration of hydroxyl radicals attains to the highest when the reaction time is 40min. The effects of the four kinds of fillers on bleaching results and stability of hydrogen peroxide are different.

关 键 词：过氧化氢漂白 漂白效果 H2O2漂白 羟基自由基 稳定剂 填料 测定 OH 反应时间 浓度 

分 类 号：TS745[轻工技术与工程—制浆造纸工程] X703[环境科学与工程—环境工程]