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| 捕获法测定介质阻挡放电降解甲苯中产生的羟基自由基 | |
| 引用本文： | 郭玉芳,廖晓斌,王筱虹,刘永慧,叶代启. 捕获法测定介质阻挡放电降解甲苯中产生的羟基自由基[J]. 广州大学学报(自然科学版), 2011, 10(1): 85-89 |
| 作者姓名： | 郭玉芳 廖晓斌 王筱虹 刘永慧 叶代启 |
| 作者单位： | 1. 广州大学环境科学与工程学院,广东,广州,510006 2. 广州大学环境科学与工程学院,广东,广州,510006;华南理工大学环境科学与工程学院,广东,广州,510006 3. 华南理工大学环境科学与工程学院,广东,广州,510006 |
| 基金项目： | 国家自然科学基金项目，华南理工大学"污染控制与生态修复"广东省高等学校重点实验室开放基金项目资助 |
| 摘 要： | 用水杨酸浸渍膜捕集-高效液相色谱(HPLC)法测定介质阻挡放电降解甲苯中羟基自由基(·OH)的生成量.考察了能量密度(S1E)、相对湿度(RH)、背景气氛、催化剂对·OH产生量的影响.实验表明,·OH量随能量密度的增大而增加,能量密度从140J·L-1增至320J·L-1时,·OH量从5.9×1013个·cm-3增加到... |
| 关 键 词： | 介质阻挡放电 羟基自由基 水杨酸 低温等离子体 甲苯 |
Detection of hydroxyl radical produced in DBD system during toluene decomposition with capture method |
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| GUO Yu-fang,LIAO Xiao-bin,WANG Xiao-hong,LIU Yong-hui,YE Dai-qi. Detection of hydroxyl radical produced in DBD system during toluene decomposition with capture method[J]. Journal og Guangzhou University:Natural Science Edition, 2011, 10(1): 85-89 | |
| Authors: | GUO Yu-fang LIAO Xiao-bin WANG Xiao-hong LIU Yong-hui YE Dai-qi |
| Affiliation: | 1 School of Environmental Science and Engineering,Guangzhou University,Guangzhou 510006,China; 2 College of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,China) |
| Abstract: | A film impregnated with salicylic acid coupled with high performance liquid chromatography(HPLC) was developed to determine hydroxyl radicals formed in DBD reactor.Effect of trapping time,specific input energy(SIE),relative humidity(RH),various background gases as well as catalyst on the quantities of OH were investigated.It was found that the quantities of OH increased with the increase of SIE.When SIE increased from 140 J·L-1 to 320 J·L-1,the amount of OH increased from 5.9×1013 radicals·cm-3 to 4.36×1014 radicals·cm-3.In the reaction RH of 20% was optimal.By changing the background gases,water vapor was identified to be the main source of OH.Moderate amount of O2 was favorable to the generation of OH,but the role of it was less important than water.Argon could enhance the formation of OH.The addition of catalyst greatly reduced the generation of OH in the gas stream. |
| Keywords: | dielectric barrier discharge OH radical salicylic acid non-thermal plasma toluene |
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