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.
Um trotz steigender Flexibilitätsanforderungen eine hohe Qualität sicherzustellen, müssen Mitarbeitende kompetenzgerecht eingesetzt und gezielt weitergebildet werden. Als Lösungsansatz wird im Projekt „reQenrol“ ein Assistenzsystem zur kompetenzbasierten Einsatzplanung und arbeitsgebundenen Schulung entwickelt. Das System unterstützt eine kompetenzgerechte Allokation von Mitarbeitenden zu Tätigkeiten und stellt Schulungsunterlagen für ein arbeitsgebundenes Lernen über Smart Devices bereit.
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