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:
Jan. 05, 2016
Filed:
Apr. 23, 2014
Bruker Daltonik Gmbh, Bremen, DE;
Thorsten Benter, Haan, DE;
Sonja Klee, Wuppertal, DE;
Other;
Abstract
The invention relates to the production of water cluster ions ('hydronium clusters') at atmospheric pressure for the chemical ionization of analyte molecules. It is proposed that a corona discharge at the Taylor cone of an aqueous liquid, preferably pure or slightly acidified pure water, is used instead of corona discharges on metal tips, which have been the usual method up to now. The hydronium clusters of the form [H(HO)]can be produced in a discharge chamber, which is separate from the ionization chamber, and introduced into the ionization chamber through a capillary. In the ionization chamber, the hydronium clusters can be heated and reduced in size by means of electrical acceleration and gas collisions, and thus made more reactive in order that analyte molecules of low proton affinity can also be ionized.