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:
Sep. 19, 2017
Filed:
Apr. 21, 2016
Msp Corporation, Shoreview, MN (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Siqin He, Qianjiang, CN;
Chris Hogan, Minneapolis, MN (US);
Lin Li, Arden Hills, MN (US);
Benjamin Y. H. Liu, North Oaks, MN (US);
Amir Naqwi, Eden Prairie, MN (US);
Francisco Romay, Vadnais Heights, MN (US);
MSP Corporation, Shoreview, MN (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
A device and method are disclosed to apply ESI-based mass spectroscopy to submicrometer and nanometer scale aerosol particles. Unipolar ionization is utilized to charge the particles in order to collect them electrostatically on the tip of a tungsten rod. Subsequently, the species composing the collected particles are dissolved by making a liquid flow over the tungsten rod. This liquid with dissolved aerosol contents is formed into highly charged droplets, which release unfragmented ions for mass spectroscopy, such as time-of-flight mass spectroscopy. The device is configured to operate in a switching mode, wherein aerosol deposition occurs while solvent delivery is turned off and vice versa.