| 光谱学与光谱分析 |
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| FAIMS of Trace Volatile Organic Compounds |
| LI Zhuang1, 2，LIN Bing-tao1, 2，KONG De-yi1*，CHEN Chi-lai1，CHENG Yu-peng1，2，WANG Huan-qin1，MEI Tao1 |
1. Institute of Intelligent Machines, Chinese Academy of Sciences, State Key Laboratory of Transducer Technology, Hefei 230031，China
2. Department of Automation, University of Science and Technology of China, Hefei 230027，China |
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Abstract FAIMS is a fast and high sensitive technique for detecting trace volatile organic compounds. Spectra of acetone, benzene and toluene were obtained on a homemade high-field asymmetric waveform ion mobility spectrometer and they can be easily separated in the spectra. Three xylene isomeric compounds were also successfully separated in FAIMS. Effect of carrier gas flow rate on the ion intensity was analyzed, and the optimal flow rate of carrier gas was 220 L·h-1 which can be used for the optimization of FAIMS instrument. The detection limit for acetone is 100 ng·L-1 that is an order of magnitude lower than the foreign traditional IMS.
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Received: 2010-01-13
Accepted: 2010-04-21
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Corresponding Authors:
KONG De-yi
E-mail: kongdy@iim.ac.cn
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