气相色谱法测定饮用水中痕量土臭素和二甲基异冰片  

Determination of Trace Geosmin and 2-Methylisoborneol in Drinking Water by Gas Chromatography

作　　者：马晓雁[1] 高乃云[1] 李青松[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]上海市杨树浦水厂分析中心,上海200092

出　　处：《分析测试学报》2007年第2期267-269,273,共4页Journal of Instrumental Analysis

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

摘　　要：对液液微萃取-气相色谱法测定饮用水中异嗅物质——土臭素(geosmin,GSM)和二甲基异冰片(2-methylisoborneol,2-MIB)的方法进行了探讨,确定了最佳萃取条件,搅拌时间为10 min,搅拌速率为1 200r/min,NaCl加入量为20 g,pH值为5左右。利用该法对上海市原水及某水厂水样进行检测,检出GSM和2-MIB含量为10 ng/L左右。A method for the detection of odorants——geosmin and 2-methylisobomeol in drinking water with liquid - liquid microextration by gas chromatography was developed. The extraction was carried out in a solution of pH 5 with a dosage of 20 g NaCl. The optimum stirring time and rate were 10 min and 1 200 r/min, respectively. The linear ranges of the calibration curves for GSM and 2-MIB were 5 - 1 000 ng/L. The method has been used for the detection of GSM and 2-MIB in Huangpu River and waterworks of Shanghai.

关 键 词：异嗅物质 土臭素 二甲基异冰片 气相色谱 程序升温进样口 

分 类 号：O657.71[理学—分析化学] P641.12[理学—化学]