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搅拌棒萃取-热脱附/气质联用法测定水中2-MIB和土臭素
引用本文:范苓,张晓赟,秦宏兵,顾海东.搅拌棒萃取-热脱附/气质联用法测定水中2-MIB和土臭素[J].环境监测管理与技术,2013,25(6):24-27.
作者姓名:范苓  张晓赟  秦宏兵  顾海东
作者单位:苏州市环境监测中心站;苏州市环境监测中心站;苏州市环境监测中心站;苏州市环境监测中心站
基金项目:苏州市社会发展科技支撑基金资助项目(SS201243)
摘    要:采用搅拌棒萃取-热脱附/气质联用法测定水中2-甲基异莰醇和土臭素,优化了搅拌棒萃取和热脱附进样的条件。试验表明:两种目标化合物在1.00 ng/L~200 ng/L范围内线性良好,2-甲基异莰醇的相关系数为0.9993,土臭素的相关系数为0.9997,方法检出限分别为0.31 ng/L和0.15 ng/L;空白和实际样品的加标回收率为82.4%~116%,测定结果的RSD<10%。

关 键 词:2-甲基异莰醇  土臭素  搅拌棒萃取  气质联用法  水质

Determination of 2-Methylisoborneol and Geosmin in Water Using Stir Bar Sorptive Extraction-Thermal Desorption/Gas Chromatography Coupled with Mass Spectrometry
FAN Ling,ZHANG Xiao-yun,QIN Hong-bing,GU Hai-dong.Determination of 2-Methylisoborneol and Geosmin in Water Using Stir Bar Sorptive Extraction-Thermal Desorption/Gas Chromatography Coupled with Mass Spectrometry[J].The Administration and Technique of Environmental Monitoring,2013,25(6):24-27.
Authors:FAN Ling  ZHANG Xiao-yun  QIN Hong-bing  GU Hai-dong
Affiliation:(Suzhou Environmental Monitoring Center, Suzhou , Jiangsu 215004, China)
Abstract:A method using stir bar sorptive extraction ( SBSE)-thermal desorption ( TD)/gas chromatogra-phy coupled with mass spectrometry ( GCMS) was developed to determinate ultra-trace level of 2-methylisoborneol (2-MIB) and geosmin in water .SBSE and TD parameters were optimized through blank spiked sample .The method showed good linearity ( r〉0 .999 ) over concentration range from 1 ng/L to 200 ng/L and high sensitivity ( the MDL of 2-MIB and geosmin were 0 .31 ng/L and 0 .15 ng/L respectively ) .The spiked recovery of blank and real samples ranged from 82 .4%to 116%with RSD 〈10%.
Keywords:2-Methylisoborneol  Geosmin  Stir bar sorptive extraction (SBSE)  Gas chromatography coupled with mass spectrometry  Water quality
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