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Fabrication and characterization of an ion mobility spectrometer device for volatile organic compounds detection

机译：挥发性有机化合物检测离子迁移光谱仪装置的制造与表征

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This work proposes a new geometry for an Ion Mobility Spectrometer (IMS) in order to detect toluene, 2-propanol and water vapor. The IMS system was designed with a compact ionization chamber followed by another capable of selectively discriminate the range radius of the charged ions that collides to lateral sensing electrodes under a bidimensional distribution of high electric fields (0.0 to 27kV/cm) and under a stationary flow regime of ions, without turbulence, using a vacuum pump coupled to the chamber. The MATLAB platform was employed to solve the equations that describes the ion trajectories as a function of their mass and the Quickfield6.3 program was employed to simulate the bidimensional distribution of high electric fields under a stationary flow regime of ions without turbulence. The results showed a good fit of the range radius of the ionized species with the position of the lateral sensing electrodes after measuring the current intensity associated to the different ionic masses obtained from the ionization of toluene, 2-propanol and water, respectively.
机译：该工作提出了用于离子迁移率光谱仪（IMS）的新几何形状，以检测甲苯，2-丙醇和水蒸气。 IMS系统设计有紧凑的电离室，其次是另一个能够选择性地区分带电离子的范围半径，该光环在高电场（0.0至27kV / cm）的偏压下和静止流动下的横向感测电极上碰撞。使用耦合到腔室的真空泵，离子的制度无湍流。采用MATLAB平台来解决描述作为其质量的函数的离子轨迹的等式，并且采用了QuickField6.3程序来模拟在没有湍流的固定流动状态下的高电场的偏压分布。结果表明，在测量与从甲苯，2-丙醇和水的电离中获得的不同离子质量相关的电流强度后，电离物质的范围半径的良好拟合。

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