藻有机物在含溴离子条件下氯化消毒HAAs的生成种类  

Haloacetic acids species from the chlorination of algal organic matter in the presence of bromide

作　　者：魏源源[1] 刘燕[1] 刘翔[1] 代瑞华[1] 

机构地区：[1]复旦大学环境科学与工程系,上海200433

出　　处：《中国科技论文在线》2011年第12期901-905,共5页

基　　金：高等学校博士学科点专项科研基金资助项目(20090071110005);国家自然科学基金资助项目(51078091);国家高技术研究发展(863)计划资助项目(2008AA062501);污染控制与资源化国家重点实验室基金资助项目(PCRRF09003);同济大学高廷耀环保基金资助项目

摘　　要：藻类污染和溴离子存在是影响沿海地区水库水源消毒副产物形成的重要因素。在有/无溴离子存在条件下,以藻细胞模拟生化成分(BSA、鱼油和淀粉),铜绿微囊藻细胞及其胞外有机物为前躯物进行氯化消毒对比实验,从藻细胞生化成分的角度探究藻有机物作为消毒副产物前躯物时,且水中存在溴离子的条件下,氯化消毒形成卤乙酸(HAAs)的种类情况。结果表明,3种模拟生化成分在溴离子存在条件下,形成的溴代HAAs仅为溴氯乙酸或二溴乙酸的1种或2种。与BSA和淀粉为前躯物时形成溴代HAAs的产物种类相比,溴离子对鱼油为前躯物时形成溴代HAAs产物种类的影响更大。模拟生化成分预测的HAAs副产物种类与具体藻种形成的HAAs副产物种类之间具有较好的吻合度。Bromide and algal pollution are important factors influencing disinfection byproducts （DBPs） formation and speciation in reservoir water in coastal areas. The chlorination of model algal cellular compounds （bovine serum albumin, fish oil and starch）, Microcystis aeruginosa and its extra-cellular organic matters （EOMs） were conducted in the absence and presence of bromide. The main aim of the present study is to explore their potential as precursors for haloacetic acids （HAAs） speciation upon chlorination in the presence of bromide. The results showed that bromochloroacetic acid （BCAA） or/and dibromoacetic acid （DBAA） was/were produced as for brominated HAAs （Br-HAAs） from the three model compounds in the presence of bromide. The effect of bromide on Br-HAAs speciation upon fish oil chlorination was more evident than with BSA and starch. There was a good correlation between the species predicted from the model compounds and those obtained from specific algal species.

关 键 词：环境科学 模拟生化成分 铜绿微囊藻 溴离子 氯化消毒 HAAs 

分 类 号：X501[环境科学与工程—环境工程]