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.
出处
《分析测试学报》
CAS
CSCD
北大核心
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)
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
Odorants
Geosmin
2-Methylisoborneol
Gas chromatography
Programmed temperature vaporizer （PTV） system
