H-type array ion trap and method for carrying out ion-ion reaction in trap

Abstract

The invention provides an H-type array ion trap design. The H type array ion trap comprises a left ion trap, a right ion trap and a central ion trap in which an X parallel electrode couple, a Y parallel electrode couple and a Z parallel electrode couple respectively form an ion trap; the left ion trap, the right ion trap and the central ion trap form an H-type array; the left ion trap and the right ion trap are arranged in parallel, the X parallel electrode couple of the left ion trap and the X parallel electrode couple of the right ion trap are opposite; and the central ion trap is arranged between the left ion trap and the right ion trap, and the Z parallel electrode couple of the central ion trap is opposite to the X parallel electrode couple of the left ion trap and the X parallel electrode couple of the right ion trap respectively. The invention provides a method for carrying out ion-ion reaction in the H type array ion trap. Ion loss in the transmission process can be effectively reduced and the ion transmission reliability in the ion traps can be ensured through the H-type array ion trap and the method.

Description

technical field [0001] The invention relates to an ion trap, in particular to an H-type array ion trap used in a miniaturized mass spectrometer, and the ion trap can realize ion-ion reaction. Background technique [0002] Mass spectrometry is a method used to analyze what kind of atoms or groups a substance molecule is composed of. Mass spectrometry is also the only method that can give the molecular weight and determine the molecular formula, and the determination of the molecular formula is crucial to the structural identification of the compound. First, it breaks material molecules into charged atoms or groups (that is, ions, which are essentially atomic groups with special properties composed of certain atoms), and then separate and detect charged particles according to their mass-to-charge ratios. Finally, the composition of substances can be analyzed qualitatively or quantitatively. The so-called mass-to-charge ratio is the ratio of the mass of a particle to its char...

AI Technical Summary

Problems solved by technology

Traditional mass spectrometers are mostly used in laboratories, generally have high performance indicators, and can achieve high-level qualitative and quantitative analysis, but their weight and volume are relatively large, and they have strict requirements on the working environment, so they are not easy to carry On-site detection requires professional operation and use, and usually requires pretreatment of the sample to be tested. The analysis procedure is cumbersome and time-consuming, and it is difficult to achieve real-time detection and analysis.

In addition, such instruments are usually expensive and difficult to popularize

Although the miniaturized mass spectrometer has a discount in performance compared with the traditional mass spectrometer, it has irreplaceable advantages in terms of detection efficiency, portability, easy operation, price, etc.

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