206nm紫外光降解水相中的氯化三苯基锡  

PHOTODEGRADATION OF AQUEOUS TRIPHENYLTIN CHLORIDE(TPT) USING 206nm UV

作　　者：何锦丛[1] 曹长青[1] 顾丁红[1] 叶招莲[1] 侯惠奇[1] 

机构地区：[1]复旦大学环境科学研究所,上海200433

出　　处：《环境化学》2008年第6期712-715,共4页Environmental Chemistry

基　　金：上海市科技发展基金资助(02312116)

摘　　要：研究了氯化三苯基锡不同初始浓度、光照时间、初始pH值和添加H2O2等因素对光降解效果的影响.结果表明,弱酸条件更有利于氯化三苯基锡的降解;当pH=2.0时,120mg·l-1氯化三苯基锡溶液光照75min后,其降解率约为89.4%;氯化三苯基锡浓度愈低,其光降解效果愈好.在氯化三苯基锡水溶液中加入双氧水后,光照75min后光降解率基本能达到100%.根据产物GC-MS分析结果,初步探讨了氯化三苯基锡光降解的机理.The photodegradation of triphenyhin chloride （TPT） in an acidic aqueous solution was studied using a microwave electrodeless UV lamp （206nm）. Different initial concentration of TPT, irradiation time, initial pH and adding hydrogen peroxide influenced the degradation ratio of TPT. A weak acidic condition was preferred for the degradation of TPT. For 120mg ·l^-1 TPT at pH =2. 0, the degradation ratio of TPT was nearly 89. 4% after irradiation for 75min. The lower of the initial concentration of TPT, the higher of the degradation ratio. When added hydrogen peroxide in the solution of TPT, Based on the analysis of photoproduct for GC-MS, disscuss the the degradation ratio reached 100% nearly. degradation mechanism of TPT.

关 键 词：氯化三苯基锡 双氧水 降解 

分 类 号：X132[环境科学与工程—环境科学]