Method of preparing and reconditioning an electrode of mass spectrometer
AssigneeShimadzu Corporation
InventorsManabu Shimomura, Hiroto Itoi
Life of this patent
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Abstract
In a mass spectrometer, an ion of a sample gas is produced in an ion source by colliding the gas with an electron beam, and is introduced into a magnetic field or an electric field. The ion is separated based on the mass number, and the sample is analyzed from a mass spectrum. The ion source has an electrode made of stainless steel, which is baked at a temperature in a range from 200° C. to 700° C. in an air atmosphere.
Claims4
A method of preparing and reconditioning an electrode of a mass spectrometer for analyzing a sample gas, comprising:
- making the electrode of the mass spectrometer, to be exposed to sample gas molecules, by stainless steel, and
- baking the electrode at a temperature in a range of 200° C. to 700° C. in an air atmosphere to form an oxide layer on the electrode.
A method of preparing and reconditioning an electrode of a mass spectrometer for analyzing a sample gas, comprising:
- making the electrode of the mass spectrometer, to be exposed to sample gas molecules, by stainless steel,
- baking the electrode at a temperature in a range of 200° C. to 700° C. in an air atmosphere to form an oxide layer on the electrode,
- using the electrode in the mass spectrometer to be exposed to the sample gas molecules, and
- reconditioning the electrode by baking at a temperature in a range of 200° C. to 700° C. to reuse the electrode in the mass spectrometer.
Dependencies are inferred from the claim text.