| 亚甲蓝分光光度法测定氧化降解瓦斯的羟基自由基 |
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| 引用本文： | 戴俊,王政锦,宋会磊.亚甲蓝分光光度法测定氧化降解瓦斯的羟基自由基[J].焦作工学院学报,2013(6):663-667. |
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| 作者姓名： | 戴俊 王政锦 宋会磊 |
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| 作者单位： | [1]河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地,河南焦作454000 [2]河南理工大学安全科学与工程学院,河南焦作454000 |
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| 基金项目： | 国家自然科学基金资助项目（51074067）;河南省基础与前沿研究项目（102300413220）;河南省瓦斯地质与瓦斯治理重点实验室开放基金资助项目（WS2012A08）. |
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| 摘 要： | 建立一种亚甲蓝作显色剂分光光度法测定Fenton试剂氧化降解瓦斯反应体系中·OH含量的方法,所产生的羟基自由基与亚甲蓝作用后使其吸光度降低,利用吸光度值的变化可间接测定·OH表观生成率,系统研究了H2O2浓度c(H2O2),Fe2+浓度c(Fe2+),初始pH值、反应温度等因素对·OH表观生成率的影响;同时,研究了异丙醇对·OH表观生成率和甲烷降解率的影响规律.结果不仅找出Fenton试剂氧化降解瓦斯反应体系中的·OH表观生成规律,而且为矿井瓦斯的绿色治理技术提供了重要的基础数据.
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| 关 键 词： | 分光光度法 亚甲蓝 羟基自由基 瓦斯 |
Spectrophotometric determination of hydroxyl radical of decomposing coal-mine gas by methylene blue decoloration |
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| DAI Jun,WANG Zheng-jin,SONG Hui-lei.Spectrophotometric determination of hydroxyl radical of decomposing coal-mine gas by methylene blue decoloration[J].Journal of Jiaozuo Institute of Technology(Natural Science),2013(6):663-667. |
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| Authors: | DAI Jun WANG Zheng-jin SONG Hui-lei |
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| Affiliation: | 1. State Key Laboratory Cultivation Base for Gas Geology and Gas Control( Henan Polytechnic University) , Jiaozuo 454000, Henan, China ; 2 School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China ) |
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| Abstract: | A method was developed for the determination of the hydroxyl radicals in the degradation of coal- mine gas with fenton reagent by spectrophotometry. Methylene Blue reacted with the produced hydroxyl radi- cals and the absorption decreased. With the change of absorption, it can be used to determine the apparent production efficiency of hydroxyl radical indirectly. The effects of H202 concentration, Fe2 ＋ concentration, in- itial pH value, and the reaction temperature on the apparent production efficiency of hydroxyl radical were in- vestigated, respectively. The influence of isopropanol on the apparent production efficiency of hydroxyl radical and the degradation efficiency of methane were also studied. The experimental results provide the important basic data for the green treatment technology of coal-mine gas disasters. |
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| Keywords: | spectrophotometry methylene blue hydroxyl radical coal-mine gas |
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