Title:
QUADRUPOLAR MASS ANALYSIS DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/125399
Kind Code:
A1
Abstract:
Disclosed is a quadrupolar mass analysis device provided with direct-current voltage sources (62, 63) having response characteristics wherein the response time of the direct-current voltage is shorter than the time required when an ion having the maximum mass-to-charge ratio among ions introduced to a quadrupolar mass filter (2) passes through the quadrupolar mass filter (2). Main rod electrodes (31-34) and front rod electrodes (41-44) are connected via primary differentiation circuits (65, 66). Thus, in the transient state of voltage variation in association with the changing of mass-to-charge ratios, among ions entering the quadrupolar mass filter (2), ions having a low m/z can be eliminated in a front electrode portion (4), and ions having a high m/z can be eliminated in a main electrode portion (3). Accordingly, a large amount of ions can be prevented from passing through the quadrupolar mass filter (2) and entering an ion detector (5).
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| WO/2006/008537 | MASS SPECTROMETER |
| WO/2009/087402 | LINEAR ION TRAP |
| WO/2004/107388 | ALL-MASS MS/MS METHOD AND APPARATUS |
Inventors:
MIZUTANI, Shiro (1 Nishinokyo-Kuwabara-cho, Nakagyo-ku, Kyoto-sh, Kyoto 11, 〒6048511, JP)
Application Number:
JP2011/054922
Publication Date:
October 13, 2011
Filing Date:
March 03, 2011
Export Citation:
Assignee:
Shimadzu Corporation (1 Nishinokyo-Kuwabara-cho, Nakagyo-ku Kyoto-sh, Kyoto 11, 〒6048511, JP)
株式会社島津製作所 (〒11 京都府京都市中京区西ノ京桑原町１番地 Kyoto, 〒6048511, JP)
株式会社島津製作所 (〒11 京都府京都市中京区西ノ京桑原町１番地 Kyoto, 〒6048511, JP)
International Classes:
H01J49/42
Attorney, Agent or Firm:
Kyoto International Patent Law Office (Hougen-Sizyokarasuma Building, 37 Motoakuozi-tyo, Higasinotouin Sizyo-sagaru, Simogyo-ku, Kyoto-s, Kyoto 91, 〒6008091, JP)
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Claims:
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