To provide a mass spectroscope capable of obtaining detailed structural information on components as an object for analysis, while realizing restraint of jumboizing of a device and shortening of measurement time.
A 3DQ part is formed with an end-cap electrode 2, a ring electrode 3, and an insulator 4, and a gas lead-in port 8 is formed at the insulator 4. A gas lead-in path 7 branched into a plurality of tubes is connected to the gas lead-in port 8. Each branched tube is connected to a collision gas generating device 5 through a mass-flow meter 6. Each collision gas generating device 5 has different kinds of collision gas sealed, a mixed-gas flow volume is set by the mass-flow meter 6, the gas is mixed in the path 7, and then led into the 3DQ. First, xenon is picked up as the gas, and an MS/MS measurement is started. Since a molecular volume of the object for analysis is diminished with the lapse of time, helium is mixed in the led-in gas and a gas-kind ratio is graded. With one time of the MS/MS method using a single collision cell, polymers down to low-molecule components are efficiently cleft, and a structural information of each molecule can be obtained.
COPYRIGHT: (C)2006,JPO&NCIPI
Shinji Yoshioka
Koda
Master Fawn Tsukasa
| JP2005243426A | ||||
| JP5082080A | ||||
| JP61292847A |
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