Because of its simplicity, reliability, and sensitivity, the drift tube ion mobility spectrometer (IMS) has been recognized as the equipment of choice for the on-site monitoring and identification of volatile organic compounds (VOCs). However, the performance of handheld IMS is often limited by the size, weight, and drift voltage, which heavily determine the sensitivity and resolving power that is crucial for the detection and identification of VOCs. In this work, we present a low-cost, miniaturized drift tube ion mobility spectrometer incorporated with a miniaturized UV ionization lamp and a relatively low drift voltage. The sensitivity and resolving power are boosted with the implementation of Fourier deconvolution multiplexing compared to the conventional signal averaging data acquisition method. The drift tube provides a high resolving power of up to 52 at a drift length of 41 mm, 10 mm ID dimensions, and a drift voltage of 1.57 kV. Acetone, benzene, dimethyl methyl phosphonate, methyl salicylate, and acetic acid were evaluated in the developed spectrometer and showed satisfactory performance.

中文翻译：

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用于检测挥发性有机化合物的小型化光电离傅里叶反卷积离子淌度谱仪

由于其简单性、可靠性和灵敏度，漂移管离子淌度谱仪 (IMS) 已被公认为挥发性有机化合物 (VOC) 现场监测和鉴定的首选设备。然而，手持式 IMS 的性能通常受到尺寸、重量和漂移电压的限制，这在很大程度上决定了对 VOC 检测和识别至关重要的灵敏度和分辨率。在这项工作中，我们提出了一种低成本、小型化的漂移管离子淌度谱仪，它配备了小型化的紫外电离灯和相对较低的漂移电压。与传统的信号平均数据采集方法相比，傅里叶反卷积复用的实施提高了灵敏度和分辨率。漂移管在 41 mm 漂移长度、10 mm ID 尺寸和 1.57 kV 漂移电压下提供高达 52 的高分辨率。丙酮、苯、甲基膦酸二甲酯、水杨酸甲酯和乙酸在开发的光谱仪中进行了评估，并显示出令人满意的性能。