Method for conducting efficient and rapid analysis in ion trap mass analyzer

A mass analyzer and rapid analysis technology, applied in the field of mass analysis, which can solve the problems of unstable ion motion and gaps.

Inactive Publication Date: 2015-07-08
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is obviously a gap for the actual needs such as high-speed,

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  • Method for conducting efficient and rapid analysis in ion trap mass analyzer
  • Method for conducting efficient and rapid analysis in ion trap mass analyzer
  • Method for conducting efficient and rapid analysis in ion trap mass analyzer

Examples

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Embodiment 1

[0053] This technical solution uses a digital square wave voltage to drive the ion trap, and realizes efficient and rapid analysis by scanning the frequency of the digital radio frequency operating voltage and quickly adjusting the operating voltage on the front and rear end cover electrodes of the ion trap mass analyzer. This scheme has been verified experimentally, and the details are as follows.

[0054] The ion trap in this scheme selects the rectangular ion trap for testing. Instrument experiment platform such as figure 2 Shown is an electrospray ionization source-rectangular ion trap mass spectrometer system (ESI-RIT-MS). The instrument is composed of a three-stage differential vacuum system, and the vacuum degree in the third-stage vacuum chamber where the ion trap is located can reach 3×10 -3 Pa. The ions generated by the electrospray ionization source enter the secondary vacuum chamber through the sampling cone, and then enter the rectangular ion trap through a qu...

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Abstract

The invention belongs to the technical field of mass spectrum analytical testing, and particularly relates to a method for conducting efficient and rapid analysis in an ion trap mass analyzer. According to the method, when ions enter an ion trap, a dipole voltage is utilized to conduct resonance extrusion on the ions, and the ion mass analysis working process is achieved. Particularly, the frequency of a digital radio frequency working voltage is scanned, working voltages of a front end cover electrode and a back end cover electrode of the ion trap mass analyzer are rapidly adjusted, four timing sequence phases which are needed in mass analysis conducted by conventional ion trap spectra are not needed, the mass analysis of the ions can be rapidly completed only by conducting the ion resonance extrusion phase, the analysis time of the whole ion trap mass spectrometer can be shortened, and the testing efficiency is improved. By means of the method for conducting the efficient and rapid analysis in the ion trap mass analyzer, additional hardware change is not needed, and the rapid analysis can be achieved efficiently only through software control.

Description

technical field [0001] The invention belongs to the technical field of mass analysis, and specifically relates to a method for realizing high-efficiency and rapid mass analysis in an ion trap mass spectrometer. By scanning the frequency of a digital radio frequency operating voltage and quickly adjusting the operating voltage on the front and rear end cover electrodes of an ion trap mass analyzer, only Performing one of the ion resonance ejection phases quickly completes the mass analysis of the ions. Background technique [0002] Mass spectrometer is currently one of the most important analytical scientific instruments in the field of analysis and testing. It is widely used in modern scientific research and production activities. It plays an indispensable role in the field of trace substance detection, and has become an indispensable analytical tool in the development of modern science and technology and in daily life. [0003] Ion trap mass spectrometer is one of many mas...

Claims

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Application Information

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IPC IPC(8): H01J49/42H01J49/02G01N27/62
Inventor 徐福兴陈银娟党乾坤汪源源方向丁传凡
Owner FUDAN UNIV
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