TiO2光催化氧化-分光光度法测定总磷的研究  

Investigation on spectrophotometric determination of total phosphorus by nano titanium photocatalytic oxidation

作　　者：陈国松[1] 杨瑾[1] 洪颖[1] 张之翼[1] 陆小华[2] 

机构地区：[1]南京工业大学应用化学系,南京210009 [2]南京工业大学化工学院,南京210009

出　　处：《分析试验室》2008年第2期19-21,共3页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(20246002,20236010);江苏省2003年环保科技计划(2003025)项目资助

摘　　要：借助自行设计并制作的微型高效光催化氧化反应器，采用超细TiO2光催化氧化法对有机磷样品进行氧化处理，测定了有机磷水处理剂及循环冷却水中总磷量。以2-磷酸基丁烷-1，2，4．三羧酸（PBTC）为样本，研究了多种催化反应条件对降解率的影响。本法加标回收率为95．4％～99．1％，相对标准偏差（RSD）0．93％。将测定结果与国标法进行比较，证明此法是一种适宜的总磷分析方法。Total Phosphorus in water treatment and circular water were determined by nano titanium photocatalytic oxidation using micro photocatalytic reactor and spectrophotometry. It was based on the fact that organic phosphorous in various compounds could be transformed into phosphate. Several effects on the efficiency of catalytic degradation were discussed using 2-phosphonobutane-1, 2, 4-tricarboxylic acid as a model. The recoveies were 95.4% -99.1% and RSD was 0.93 %. By comparing the results of this method with those of the national standard method, it was proved that it was a simple, quick and accurate method for the total phosphorus determination.

关 键 词：TIO2 光催化氧化 分光光度 总磷 

分 类 号：O657.32[理学—分析化学]