scholarly journals Miniaturized high-performance drift tube ion mobility spectrometer

2019 ◽  
Vol 22 (2) ◽  
pp. 77-83 ◽  
Author(s):  
André Ahrens ◽  
Moritz Hitzemann ◽  
Stefan Zimmermann
Keyword(s):  
Ion Mobility ◽  
Drift Tube ◽  
High Performance ◽  
Ion Mobility Spectrometer

scholarly journals Novel ion drift tube for high-performance ion mobility spectrometers based on a composite material

2020 ◽  
Vol 23 (2) ◽  
pp. 75-81 ◽  
Author(s):  
André Ahrens ◽  
Janina Möhle ◽  
Moritz Hitzemann ◽  
Stefan Zimmermann
Keyword(s):  
Composite Material ◽  
Ion Mobility ◽  
Drift Tube ◽  
High Performance ◽  
Resolving Power ◽  
Continuous Increase ◽  
Ion Mobility Spectrometer ◽  
Ion Drift ◽  
Single Piece ◽  
Metal Sheets

Abstract Ion mobility spectrometers (IMS) are able to detect pptV-level concentrations of substances in gasses and in liquids within seconds. Due to the continuous increase in analytical performance and reduction of the instrument size, IMS are established nowadays in a variety of analytical field applications. In order to reduce the manufacturing effort and further enhance their widespread use, we have developed a simple manufacturing process for drift tubes based on a composite material. This composite material consists of alternating layers of metal sheets and insulator material, which are connected to each other in a mechanically stable and gastight manner. Furthermore, this approach allows the production of ion drift tubes in just a few steps from a single piece of material, thus reducing the manufacturing costs and efforts. Here, a drift tube ion mobility spectrometer based on such a composite material is presented. Although its outer dimensions are just 15 mm × 15 mm in cross section and 57 mm in length, it has high resolving power of Rp = 62 and detection limits in the pptV-range, demonstrated for ethanol and 1,2,3-trichloropropane.

scholarly journals Determination of ethylene by field asymmetric ion mobility spectrometry

2020 ◽  
Vol 23 (2) ◽  
pp. 161-166
Author(s):  
Nattapong Chantipmanee ◽  
Peter C. Hauser
Keyword(s):  
Standard Deviation ◽  
Ion Mobility ◽  
Drift Tube ◽  
Limit Of Detection ◽  
Rectangular Pulse ◽  
Kiwi Fruit ◽  
Ion Mobility Spectrometer ◽  
Climacteric Fruit ◽  
Relative Standard

Abstract The determination of ethylene with a field asymmetric ion mobility spectrometer, which can easily be constructed in-house, is described. The device makes use of a Krypton lamp for ionization. A rectangular pulse of 500 Vpp at 1 MHz was employed as separation waveform in the drift tube rather than the commonly used less efficient bisinusoidal waveform. The calibration curve for the range from 670 ppb(V/V) to 67 ppm(V/V) was found to be highly linear with a correlation coefficient of r = 0.9999. The limit of detection was determined as 200 ppb(V/V). The reproducibility was 4% (relative standard deviation). The device was found to be suitable for the determination of ethylene given off by fruit; 6 types of climacteric fruit were tested, namely apples, bananas, kiwi fruit, nectarines, pears and plums.

scholarly journals Transmission of a Drift Tube Ion Mobility Spectrometer, Connected with a Mass Spectrometer

2015 ◽  
Vol 72 ◽  
pp. 278-282 ◽  
Author(s):  
D.M. Chernyshev ◽  
S.S. Poteshin ◽  
A.V. Karpov ◽  
Alexey A. Sysoev ◽  
Alexander A. Sysoev
Keyword(s):  
Mass Spectrometer ◽  
Ion Mobility ◽  
Drift Tube ◽  
Ion Mobility Spectrometer
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