MASS SPECTROMETRY DEVICE AND ION DETECTION METHOD THEREFOR
First Claim
1. A mass spectrometry device which performs a channel scan measurement by changing a voltage to be applied to a mass separation unit to selectively extract a desired ion, the device comprising:
- an ion detection unit which detects an ion separated by the mass separation unit and outputs an electric signal;
an ion amount measuring unit which measures an ion amount from the output of the ion detection unit; and
anion amount correction unit which corrects a detection amount of ion from an output of the ion amount measuring unit, whereinin a process of a channel scan, the ion amount correction unit performs correction of a detection amount of ion detected in a present channel based on a detection amount of ion in a previous channel.
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Abstract
An object of the invention is to provide a mass spectrometry device and an ion detection method therefor in which an ion amount can be detected with high accuracy.
In order to achieve the object described above, a mass spectrometry device is provided which performs a channel scan measurement by changing a voltage to be applied to a mass separation unit to selectively extract a desired ion. The mass spectrometry device includes: an ion detection unit which detects an ion separated by the mass separation unit and outputs an electric signal; an ion amount measuring unit which measures an ion amount from the output of the ion detection unit; and an ion amount correction unit which corrects a detection amount of ion from an output of the ion amount measuring unit. In a process of a channel scan, the ion amount correction unit performs correction of a detection amount of ion detected in a present channel based on a detection amount of ion in a previous channel.
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Citations
10 Claims
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1. A mass spectrometry device which performs a channel scan measurement by changing a voltage to be applied to a mass separation unit to selectively extract a desired ion, the device comprising:
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an ion detection unit which detects an ion separated by the mass separation unit and outputs an electric signal; an ion amount measuring unit which measures an ion amount from the output of the ion detection unit; and anion amount correction unit which corrects a detection amount of ion from an output of the ion amount measuring unit, wherein in a process of a channel scan, the ion amount correction unit performs correction of a detection amount of ion detected in a present channel based on a detection amount of ion in a previous channel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An ion detection method for a mass spectrometry device which performs a channel scan measurement by measuring an ion extracted by a mass separation, the method comprising:
correcting a detection amount of ion detected in a present channel of the ion extracted by the mass separation based on a detection amount of ion in the previous channel in a process of the channel scan.
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8. A mass spectrometry device which performs a channel scan measurement by measuring an ion extracted by a mass separation, the device comprising:
a set value input screen for selecting a measurement time of one channel and an interval time. - View Dependent Claims (9, 10)
Specification