《Compact and Sensitive Dual Drift Tube Ion Mobility Spectrometer with a New Dual Field Switching Ion Shutter for Simultaneous Detection of Both Ion Polarities》 was published in Analytical Chemistry (Washington, DC, United States) in 2020. These research results belong to Lippmann, Martin; Kirk, Ansgar T.; Hitzemann, Moritz; Zimmermann, Stefan. Recommanded Product: Methyl Salicylate The article mentions the following:
Ion mobility spectrometers (IMS) with field switching ion shutters are an excellent choice for trace gas detection, being extremely sensitive while having fast response times. However, as different target mols. may form pos., neg., or even ions of both polarities, it is beneficial to simultaneously detect both ion polarities. Here, we present a dual drift tube IMS with a new dual field switching ion shutter for gating both ion polarities and an X-ray ionization source in orthogonal configuration. The dual field switching ion shutter allows significantly improved ion gating and ion accumulation due to improved shielding of the ionization region from the drift field. Equipped with two 75 mm long high-performance drift tubes, the dual IMS reaches high resolving power of R = 90 with detection limits in the lower pptv range for different ketones, chlorinated hydrocarbons and Me salicylate that forms ions in both polarities. The experimental process involved the reaction of Methyl Salicylate(cas: 119-36-8Recommanded Product: Methyl Salicylate)
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