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Peak Profile Analysis in High Field Asymmetric Wave Ion Mobility Spectrometry
Chi-lai Chen*1,2, De-yi Kong1, Xiao-hua Wang1, Huan-qin Wang1, Feng Shuang1, Tao Mei1
1.Institute of Intelligent Machines, Chinese Academy of Sciences, State Key Laboratory of Transducer Technology, Hefei 230031, China;2.Department of Precision Machine and Precision Instrument, University of Science and Technology of China, Hefei 230027, Chin
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.
Key words:  High field asymmetric wave ion mobility spectrometry, Loss height, Ion tra-jectory, Spectral peak profile model, Parameter optimization
FundProject:
高场不对称波形离子迁移谱谱图峰分析方法研究
陈池来*1,2, 孔德义1, 汪小华1, 王焕钦1, 双丰1, 梅涛1
1.中国科学院合肥智能机械研究所传感技术国家重点实验室, 合肥230031;2.中国科学技术大学精密机械与精密仪器系,合肥230027
摘要:
从离子运动轨迹入手,引入损耗高度,建立了高场不对称波形离子迁移谱(FAIMS)的谱图峰模型. 该模型将流场分布、离子迁移管结构、分离电压以及补偿电压等FAIMS关键参数与FAIMS谱图峰形、峰高、半高宽联系起来,得到了清晰的量化关系,与实验数据符合较好.
关键词:  高场不对称波形离子迁移谱,离子运动轨迹,损耗高度,谱图峰模型,参数优化
DOI:10.1088/1674-0068/24/03/325-329
分类号: