摘要
Fenton体系是H2O2与Fe(II)反应产生.OH的过程。本文主要研究了二甲基亚砜对Fenton体系产生的.OH的捕获,通过分析产物HCHO的浓度,确定.OH的生成量。同时,建立了DMSO捕获Fenton体系产.OH过程的化学反应模型,考察了DMSO初始浓度、pH值对Fenton体系的影响。结果表明DMSO浓度达到246 mmol/L时能够基本完全捕获Fenton体系所产生的.OH;pH值小于5时,Fenton体系受到H+激发释放较多的.OH,pH值不大于5时,H+对Fenton体系的激发能力不足。
Fenton was a reaction between H2O2 with Fe（II） in solution,which could produce ·OH radical.The scavenging of hydroxyl radical produced from Fenton reaction using dimethyl sulfoxide（DMSO） was mainly investigated.Through analysis of the generation of the intermediate by-product of HCHO,the amount of produced hydroxyl radical could be estimated.Besides,the chemical reaction modeling of the reaction between DMSO with Fenton reagents was also performed to investigate the effects of DMSO initial concentration and solution pH on production of hydroxyl radical.The results were that ·OH was completely scavenged by 246 mmol/L of DMSO,when pH5,the oxidation potential of Fenton system was enhanced through increasing H＋,and when pH5,the oxidation potential of Fenton system was weakened.
出处
《广州化工》
CAS
2012年第3期46-49,共4页
GuangZhou Chemical Industry
基金
中国博士后科学基金(20100480018)
