Method and apparatus for ionizing gases using UV radiation and electrons and identifying said gases

US8742363B2 · kind B2 · utility

Assignee

• Airsense Analytics GmbH · DE

Inventors

• Wolf Münchmeyer · Wittingen, DE
• Bert Ungethüm · Schwerin, DE
• Andreas Walte · Schwerin, DE

Key dates

• Filing date: Aug 11, 2011
• Grant date: Jun 3, 2014
• Expiry date: Aug 11, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/68
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method for ionizing and identifying gases, wherein the gases to be identified are ionized in a reaction chamber and the product ions are measured, wherein the measurement of the product ions takes place via electrical fields acting on the product ions and the detection is performed with a detector for ions. It is provided that ionization takes place via UV radiation, and that simultaneously or sequentially ionization by electrons takes place. The invention further relates to a device for ionizing and identifying gases, which includes an ion source chamber having an ion source and an ion mobility spectrometer. For this purpose, a partition between the ion source chamber and the ion mobility spectrometer has a UV-transparent window and a window permeable for electrons, wherein UV radiation and electron radiation can be generated in the ion source chamber with the ion source.