便携式气相色谱-质谱联用仪的研制及应用  

Development and Application of Portable Gas Chromatograph-Mass Spectrometer

作　　者：李晓旭[1,2] 刘立鹏 马乔 俞建成[1,2] 郑毅 吴文明 王健 

机构地区：[1]杭州电子科技大学电子信息学院,杭州310018 [2]聚光科技(杭州)股份有限公司,杭州310052

出　　处：《分析化学》2011年第10期1476-1481,共6页Chinese Journal of Analytical Chemistry

基　　金：国家科技支撑计划资助项目(No.2009BAK60B03)

摘　　要：将双曲面三维离子阱质谱技术与低热容气相色谱技术相结合,研制了便携式气相色谱-质谱联用仪(GC-MS)。此仪器主要由进样系统、低热容气相色谱模块、气质接口以及小型化离子阱质谱模块等构成,其主机重量小于14kg,体积为44cm×36cm×22cm,功耗小于100W。该仪器中的离子阱质谱仪系统具有15～550amu的质量范围,在全质量范围内质量分辨率优于0.5amu(FWHM),最高扫描速率可达10000amu/s,此系统还具有三级质谱分析功能。采用此便携式GC-MS分别测试环境标准样品EPA TO-14和EPA 624,结果表明,仪器具有定性能力强、分析速度快、检测灵敏度高、功耗小以及便携性能优等特点,可对空气、水体、固态废弃物中的有毒有害物质进行现场分析和检测。A portable gas chromatograph-mass spectrometer（GC-MS） was developed based on a quadrupole ion trap（IT） mass analyzer and a low thermal mass GC.The portable GC-MS system,mainly composed of a sample system,a low thermal mass GC module,a GC-MS interface and a miniaturized ITMS system,has a dimension of 44 cm×36 cm×22 cm and weighs of 14 kg.The power consumption during sample analysis is about 100 W.The ITMS system has a mass range of m/z 15-550 and can give a mass resolution at full-width half-maximum（FWHM） of less than 0.5 amu at a high scan rate up to 10,000 amu/s.Furthermore,the ITMS system has the ability of performing three-stage tandem mass spectrometry.The performance of the portable GC-MS system was investigated by testing the volatile organic compounds（VOCs） standard including EPA TO-14 and EPA-624 by this system.The portable GC-MS system can be used for in situ analysis of hazard compounds in a variety of complex and harsh environments with portability,rapid response,low detection limit and high specificity.

关 键 词：便携式 气相色谱-质谱联用仪 离子阱质谱 低热容气相色谱 多级质谱 

分 类 号：TH843[机械工程—仪器科学与技术] O657.63[机械工程—精密仪器及机械]