Gas chromatograph/mass spectrometer system
AssigneeShimadzu Corporation
InventorHiroto Itoi
Life of this patent
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Abstract
Conventionally, the mass spectrometer unit is placed beside the gas chromatograph unit when the gas chromatograph unit is coupled with a mass spectrometer unit, whereas the normal detector is placed on the top of the gas chromatograph unit when it is coupled with a normal detector. This requires different structure of the gas chromatograph unit. In the gas chromatograph/mass spectrometer (GC/MS) system of the present invention that uses a suitably modified and re-designed mass spectrometer, the mass spectrometer unit is mounted on the top of the casing of the gas chromatograph unit. Thus a common gas chromatograph unit can be used whether it is coupled with a normal detector or with a mass spectrometer unit. Another advantage of the GC/MS system of the present invention is that it occupies less table-top or floor space.
Claims8
A gas chromatograph/mass spectrometer system comprising:
- a gas chromatograph unit for sample gas analysis contained in a first casing including an oven for heating a gas chromatographic column;
- and
- a mass spectrometer unit contained in a second casing mounted on a top of the first casing to economize usage of available table top or floor space, where said mass spectrometer unit is designed with a base plate for supporting thereon internal components of said mass spectrometer unit so that said sample gas passing through from said gas chromatograph unit to said mass spectrometer unit flows through a minimum path, thereby yielding sharp chromatograph peaks by a resultant reduced amount of dispersion effected within said sample gas, and where said mass spectrometer has a removable top cover for allowing easy access, replacement and maintenance of said internal components.
Dependencies are inferred from the claim text.