Portable ion trap mass spectrometer with metal hydride container as source of hydrogen buffer gas
AssigneeScience & Engineering Services, Inc.
InventorsAlexander Misharin, Vladimir M. Doroshenko
Life of this patent
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Abstract
A mass spectrometry (MS) method which includes generating in a vicinity of the quadrupole ion trap hydrogen molecules, directing at least part of the hydrogen molecules into the quadrupole ion trap cell, applying AC and DC voltages to quadrupole ion trap cell electrodes to create a combined AC/DC trapping field, placing sample ions inside the quadrupole ion trap cell, cooling at least part of said ions using said hydrogen molecules as a buffer gas, changing the combined AC/DC trapping field to eject the ions from the quadrupole ion trap cell, and detecting the ejected ions.
Claims24
A mass spectrometry method using a quadrupole ion trap, comprising:
- generating in a vicinity of the quadrupole ion trap hydrogen molecules;
- directing at least part of said hydrogen molecules into the quadrupole ion trap cell;
- applying AC and DC voltages to quadrupole ion trap cell electrodes to create a combined AC/DC trapping field;
- placing sample ions inside the quadrupole ion trap cell;
- cooling at least part of said ions using said hydrogen molecules as a buffer gas;
- changing the combined AC/DC trapping field to eject said ions from the quadrupole ion trap cell;
- detecting the ejected ions.
A quadrupole ion trap mass spectrometer system for mass-analyzing sample ions, comprising:
- an ion trap cell;
- a hydrogen gas generator disposed in a vicinity of the quadrupole ion trap mass spectrometer system, and which has the capability to generate hydrogen molecules to be supplied as a buffer gas to the ion trap;
- and
- gas-handling mechanisms which supply said hydrogen molecules into the ion trap cell.
Dependencies are inferred from the claim text.