硫酸钛光度法测定O_3/H_2O_2体系中低浓度H_2O_2  

Spectrophotometric Determination of Low Concentration of Hydrogen Peroxide in O_3/H_2O_2 System Using Titanium Sulfate

作　　者：刘小为[1] 陈忠林[1] 沈吉敏[1] 叶苗苗[1] 陈文辉[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《中国给水排水》2010年第16期126-129,共4页China Water & Wastewater

基　　金：国家高技术研究发展计划(863)项目(2007AA06Z339)

摘　　要：基于在酸性介质中过氧化氢(H2O2)与钛离子(Ti4+)生成橙色络合物的原理,采用硫酸钛光度法测定含强氧化剂(O3)体系中的低浓度H2O2。考察了硫酸钛用量、显色时间、溶液酸度、共存无机离子和氧化剂等因素对测定结果的影响,并在以实际水体(滤后水)为本底的O3/H2O2高级氧化体系中,对DPD法和硫酸钛光度法测定H2O2进行了对比试验。结果表明:与DPD法相比,硫酸钛光度法能有效克服体系中残留氧化剂带来的影响,可作为O3/H2O2高级氧化体系中低浓度H2O2的快速测定方法。Based on the principle of forming an orange complex by hydrogen peroxide （ H2O2 ） and titanium ion in acidic media, the titanium sulfate spectrophotometry was used for determination of low concentration of hydrogen peroxide in the ozone-containing system. The influencing factors such as titanium sulfate dosage, coloration time, solution acidity, coexisting inorganic ions and strong oxidants like ozone on the measurement results were investigated. The titanium sulfate speetrophotometry was compared with N, N-diethyl-p-phenylenediamine （DPD） method in the O3/H2O2 advanced oxidation reaction system with real water background （filtrated water）. The result shows that the titanium sulfate spectrophotometry can overcome the effect brought about by residual strong oxidants compared to DPD method. The titanium sulfate spectrophotometry is considered to be a rapid determination method of low concentration of hydrogen peroxide in the O3/H2O2 reaction system.

关 键 词：过氧化氢 硫酸钛 DPD法 高级氧化 臭氧 

分 类 号：TU991.21[建筑科学—市政工程]