The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2021
Filed:
Nov. 11, 2015
Danmarks Tekniske Universitet, Kgs. Lyngby, DK;
Daniel Bøndergaard Trimarco, Valby, DK;
Peter Christian Kjærgaard Vesborg, Charlottenlund, DK;
Thomas Pedesen, Valby, DK;
Ole Hansen, Hørsholm, DK;
Ib Chorkendorff, Birkerød, DK;
DANMARKS TEKNISKE UNIVERSITET, Lyngby, DK;
Abstract
The invention relates to a device () for extracting volatile species from a liquid () connected to an inlet of an analysis instrument, such as a mass spectrometer (MS). The device has a chamber (), a membrane () forming a barrier for the liquid at zero differential pressure between the inside and the outside of the chamber, and allowing passage of the volatile species at zero differential pressure between the inside and the outside of the chamber. The device has an inlet capillary channel () to feed in a carrier gas and prevent back-diffusion from the chamber, and an outlet capillary channel () which provides a significant pressure reduction, e.g. from atmospheric pressure in the chamber () to near-vacuum suitable for an MS. The invention combines the best of two worlds, i.e. the fast time-response of a DEMS system and the high sensitivity of a MIMS system, since a differential pumping stage is not needed.