上海市饮用水中痕量土臭素和二甲基异冰片年变化规律及来源研究  

Source and Fluctuation of Trace Geosmin and(2-MIB) in Drinking Water of Shanghai

作　　者：马晓雁[1] 高乃云[1] 李青松[1] 刘成[1] 顾国芬 

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]上海市杨树浦水厂水质分析室,上海200092

出　　处：《环境科学》2008年第4期902-908,共7页Environmental Science

基　　金：国家高技术研究发展计划(863)项目(2002AA601130);国家科技攻关计划重大项目(2003BA808A17);污染控制与资源化研究国家重点实验室开放课题项目(PCRRF05007)

摘　　要：采用液液微萃取-气相色谱/质谱联用测定饮用水中痕量异嗅物质——土臭素（geosmin,GSM）和二甲基异冰片（2-Methylisoborneol,2-MIB或MIB）.对上海市饮用水水源以及某水厂工艺出水进行调查发现,土霉味的来源主要为2-MIB,异嗅问题暴发季节为7-10月,7、8月份达到顶峰,原水中2-MIB的最高检出浓度可达152.82 ng/L,水厂出水中最高检出浓度为97.94 ng/L.初步的来源分析推断2-MIB为水中颤藻的代谢产物.Liquid-liquid microextraction/GC/MS analysis method was employed in detecting trace odorants in drinking water.A-year-long investigation on odor chemicals was carried out in source water and drinking water in a certain waterworks of Shanghai.The results showed that 2-MIB was the main contaminant which induce disgusting odor to drinking water of Shanghai in July,August,September and October in a year with the peak concentration of 2-MIB 152.82ng/L in raw water and 97.94ng/L in finished water from waterworks.Oscillatoria was suspected as the resource of 2-MIB.

关 键 词：异嗅物质 土臭素 二甲基异冰片 气相色谱-质谱 饮用水 

分 类 号：X131.2[环境科学与工程—环境科学] TU991.25[建筑科学—市政工程]