Mass spectrometer and ion source used therefor
AssigneeHitachi High-Technologies Corporation
InventorsHiroyuki Satake, Hideki Hasegawa, Masuyuki Sugiyama, Yuichiro Hashimoto
Life of this patent
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Abstract
The quantitative accuracy of analysis is improved without reducing the dynamic range for measurement of concentrations by performing stable ionization through electrospray or the like which repeats sampling and ionization using a movable probe electrode. A voltage is applied from a high-voltage power source 4 to a sample transport electrode 7 having a plurality of probe electrodes 1 and a driving section 3 drives the sample transport electrode 7 to rotate. The plurality of probe electrodes 1, to which a sample solution 5 is adhered, are sequentially transported to an inlet 21 of a mass spectrometer 20, thus electrospray ionization is continuously performed.
Claims17
A mass spectrometer comprising:
- an ion source;
- a mass spectrometer section having a counter electrode provided with an inlet through which an ionized sample is introduced;
- and a control section that controls the ion source, wherein
- the ion source includes:
- a sample retaining section that retains a sample;
- a sample transport electrode that has a plurality of probe electrodes;
- a power source that applies a voltage between the sample transport electrode and the counter electrode;
- and
- a driving section that drives the sample transport electrode such that the plurality of probe electrodes sequentially pass by the sample retaining section and the inlet.
An ion source used for a mass spectrometer, comprising:
- a sample retaining section that retains a sample;
- a sample transport electrode that has a plurality of probe electrodes;
- a power source that applies a voltage between the sample transport electrode and a counter electrode of a mass spectrometer section;
- and
- a driving section that drives the sample transport electrode, wherein
- the driving section drives the sample transport electrode such that the plurality of probe electrodes sequentially pass by the sample retaining section and the inlet provided in the counter electrode.
Dependencies are inferred from the claim text.