O_3/H_2O_2降解Atrazine效能研究  

Efficiency of Atrazine Degradation by O_3 /H_2O_2

作　　者：李绍峰[1] 梁媛[2] 张荣全[3] 叶非[2] 

机构地区：[1]深圳职业技术学院建筑与环境系,深圳518055 [2]东北农业大学理学院,哈尔滨150030 [3]山东省农药检定所,济南250100

出　　处：《环境科学》2009年第5期1425-1429,共5页Environmental Science

基　　金：深圳市科技局项目(06KJD036)

摘　　要：利用O3/H2O2降解莠去津,对氧化产物进行了色谱分析,以评价该体系降解莠去津效能.莠去津初始浓度2 mg/L,7.5mg/L的O3单独氧化去除率为27.2%;相同O3投量下,H2O2/O3摩尔比0.75时,5 min莠去津的去除率最高可达96.5%,表明H2O2/O3体系对莠去津的去除效果良好,降解速度快.以离子色谱对产物的离子进行分析,莠去津浓度下降的同时,硝酸根和氯离子浓度增高.GC-MS检测的产物和对LC-MS谱图的分析表明,有机产物中存在脱乙基、脱异丙基和脱氯莠去津,说明H2O2/O3并不能彻底氧化莠去津,因此工程中作为主要去除单元或突发性污染事件的应急手段可能还需要与活性炭等单元联用.The endocrine disrupter Atrazine was oxidized by O3/H2O2 system and the products were analyzed to assess the degradation efficiency of Atrazine. When it＇s initial content was 2 mg/L and 03 dosage was 7.5 mg/L, Atrazine was removed about 27.2% after 5 minutes. Under the same condition, H2O2/O3 molar ratio was 0.75, Atrazine maximum removal rate reached 96.5 %, which suggested that Atrazine could be degraded by O3/H2O2 system effectively. Ion Chromatography （IC） analysis showed that concentrations of chloride and nitrate ions were increasing along with the Atrazine content decreasing. Gas Chromatography-Mass spectrometry （GC-MS） and Liquid Chromatography-Mass spectrometry chromatograms （LC-MS） analyzing illuminated the existence of de-ethyl-atrazine, de-isopropyl-atrazine and de-chloro-atrazine, which indicated the Atrazine could not be destroyed completely by O3/H2O2 system. Consequently, it should be combined with GAC （Granular Activated Carbon） or other techniques while used as primary treatment unit or emergency measure.

关 键 词：内分泌干扰物 莠去津 产物 

分 类 号：X52[环境科学与工程—环境工程]