东江水中典型致嗅物质的调查  

Typical odorant component of Dongjiang River in China—a survey.

作　　者：李勇[1] 陈超[1] 张晓健[1] 张晓慧[2] 朱晓辉[2] 戴吉胜 许欢 

机构地区：[1]清华大学环境科学与工程系,北京100084 [2]兰州交通大学环境与市政工程学院,甘肃兰州730070 [3]东莞市东江水务有限公司,广东东莞523112

出　　处：《中国环境科学》2008年第11期974-978,共5页China Environmental Science

基　　金：国家自然科学基金资助项目(50778097);国家科技支撑计划项目(2007BAC26B03)

摘　　要：为去除由于运河排洪造成的东江饮用水中的嗅味,利用臭氧氧化-活性炭吸附中试装置,分别对东江水、运河水、装置进水和出水取样,进行吹扫捕集–GC-MS谱图分析,通过水样的臭阈值和吹扫捕集-GC-MS谱图对比,确定了东江夏季排洪时的致嗅物质,并分析了该江水中致嗅物质的组成特点.结果表明,东江水中致嗅物质来源于市内运河,其组成随季节不同变化较大,除了土嗅素和2-甲基异莰醇微生物代谢产物类致嗅物质外,以1-丙烯基-1-硫醇为主的硫醇、硫醚类厌氧分解产物是其夏季饮用水中主要的致嗅物质.To remove the odor in drinking water caused by a flood drain canal in one city of China, a pilot-scale ozone-activated carbon was established. Samples collected from raw water, canal, influent and effluent of ozone-activated carbon were analysised by Purge Trap-GC-MS. Based on Threshold Odor Number （TON） and P＆T-GC-MS spectrums of these samples, the odorant and character of odorant component in raw water were studied. The odorant composing in raw water varied in seasons, which was correlated with that in canal. Besides of geosmin and 2-MIB, thiol or thioether contributed to the seasonal odor of the river and drinking water. Researches on the removal technology of thiol and thioether should be performed as soon as possible.

关 键 词：嗅味 致嗅物质 1-丙烯基-1-硫醇 硫醇 硫醚 

分 类 号：X522[环境科学与工程—环境工程] TU991.21[建筑科学—市政工程]