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:
May. 03, 2022
Filed:
May. 31, 2018
Shimadzu Corporation, Kyoto, JP;
Tasuku Murata, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
The probe drive unit () collects a sample () at the tip of the probe () by lowering and raising the probe () under the control of the control unit (). After that, the high voltage generating unit () applies a high voltage whose voltage value increases in a slope shape to the probe (), and meanwhile, the mass spectrometry unit behind the capillary tube () performs product ion scan measurements on the two-step probe voltage, and the mass spectrum data obtained in each measurement is stored in the first and the second probe voltage corresponding data storage units (and). When the ionization efficiencies of the plurality of types of components contained in the sample () have a probe voltage dependence, ion peaks derived from different types of components appear in the two mass spectra. Thus, a plurality of types of components contained in the sample can be roughly separated, and the identification performance based on the mass spectrum and the quantitative performance based on the chromatogram can be improved.