三维荧光分析O_3和UV-C处理铜绿微囊藻过程  

3-D fluorescence spectroscopy studies on degradation of microcystic aeruginosa by O_3 and UV-C irradiation

作　　者：王昊[1] 高乃云[1] 欧桦瑟[1] 戎文磊 周圣东 陆纳新 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092 [2]无锡自来水公司,江苏无锡214031

出　　处：《中南大学学报（自然科学版）》2012年第2期763-768,共6页Journal of Central South University:Science and Technology

基　　金：国家科技重大专项基金资助项目(2008ZX07421-002);国家高技术研究发展计划("863"计划)项目(2008AA06A412);住房和城乡建设部研究开发项目(2009-K7-4)

摘　　要：采用三维荧光色谱(EEM)研究O3和UV-C处理铜绿微囊藻(Microcystic Aeruginosa)过程中胞外溶解性有机物(EDOM)及胞内溶解性有机物(IDOM)的荧光特性变化,并对其进行定性和定量分析。研究结果表明:未处理的铜绿微囊藻的胞外荧光物质以类蛋白质物质为主,胞内以类蛋白质和类氨基酸物质为主;定量分析采用区域积分方法,经过处理之后,胞内、外类蛋白质峰和类腐殖质峰强度均有变化,不同氧化剂处理过程中各个特征荧光峰的变化趋势不同,存在不同的反应机理,其中,中等强度UV-C对藻类荧光有机物降解效果显著,低浓度的O3对藻类荧光有机物降解效果不佳。3-D excitation emission matrix fluorescence（EEM） spectroscopy was used for degradation studies of Microcystic Aeruginosa by O3 and UV-C irradiation.Extracellular dissolved organic matter（EDOM） and intracellular dissolved organic matter（IDOM） of algal suspension were analyzed by EEM and quantified by fluorescence regional integration（FRI） methods.Protein-like matter was determined to be the major fluorescence component of EDOM,while amino acid-like and protein-like matter was found to constitute IDOM.The results show that the variation tendency of protein-like matter and humus-like matter are different as a result of specific disinfection and degradation mechanisms of O3 and UV-C.Medium intensity UV-C irradiation is confirmed to be an efficient cyanobacterial inactivation method with high purifying effect of dissolved fluorescence organic matter,while low-dosage O3 has limited effect on cyanobacterial-based matter removal.

关 键 词：三维荧光色谱 铜绿微囊藻 UV-C 臭氧氧化 藻类控制 区域积分 

分 类 号：X703.1[环境科学与工程—环境工程]