Peak Profile Analysis in High Field Asymmetric Wave Ion Mobility Spectrometry |
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| Authors: | Chi-lai Chen De-yi Kong Xiao-hua Wang Huan-qin Wang Feng Shuang Tao Mei |
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| Affiliation: | 1.Institute of Intelligent Machines, Chinese Academy of Sciences, State Key Laboratory of Transducer Technology, Hefei 230031, China;Department of Precision Machine and Precision Instrument, University of Science and Technology of China, Hefei 230027, Chin2.Institute of Intelligent Machines, Chinese Academy of Sciences, State Key Laboratory of Transducer Technology, Hefei 230031, China |
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| Abstract: | High field asymmetric wave ion mobility spectrometry (FAIMS) is a powerful tool to detect and characterize gas-phase ions, while the unsolvable partial differential equation of ions moving in ion drift tube poses a big challenge to FAIMS spectral peak analysis. In this work, a universal and effective model of FAIMS spectral peak profile has been proposed by introducing ion trajectory and loss height. With this model, the influence of the structure of ion drift tube, dispersion voltages, compensation voltages, and carrier gas flow rate on the FAIMS spectral peak characteristics like peak shape, full width at half maximum and peak height is analyzed and discussed. The results show that the influence of different factors on the FAIMS spectral peak profile can be qualitatively described by the model which agrees with the experimental data. |
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| Keywords: | High field asymmetric wave ion mobility spectrometry Loss height Ion tra-jectory Spectral peak profile model Parameter optimization |
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