Efficient simple molecules/ions reaction mass spectrometry apparatus and operation method therefor

Abstract

The invention provides an efficient simple molecules / ions reaction mass spectrometry apparatus and an operation method therefor. The efficient simple molecules / ions reaction mass spectrometry apparatus comprises a set of apparatuses, including an ion trap mass analyzer, an accurate control system for controlling reagent molecules to be introduced to the ion trap, an accurate control system for introducing buffer air flow, a vacuum gauge and an ion trap air pressure automatic regulation functional module. In addition, the invention also provides an operation method for the system for performing efficient molecules / ions reaction, and accurate measurement for molecules / ions reaction products.

Description

technical field [0001] The present invention relates to a system for rapid and accurate on-line identification of molecular / ion high-efficiency reactions in a gaseous environment, in particular to a molecular / ion reaction mass spectrometry device system based on ion trap technology for orderly regulating the content of reagent molecules and buffer gas in the ion trap. Background technique [0002] The conventional chemical reaction is the reaction between chemical reagents in the laboratory, which is usually called "wet experiment", which has problems such as large sample volume and difficulty in timely detection and identification of process products. Molecular ion reactions in a gaseous environment can effectively solve these problems, not only using a small amount of reagents, but also quickly and in time to detect intermediate products. However, molecular ion reactions in a gaseous environment require a set of equipment to realize, at least molecular reagents need to be l...

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Problems solved by technology

Therefore, a compromise strategy is often adopted, that is, filling a buffer gas with a compromise flow rate, taking into account both ion implantation and ion detection, but it is difficult to achieve the best performance in both ion implantation and ion detection.

[0013] Due to the inherent problems brought about by the ion trap operation mode, there is a significant problem in the current molecular ion reaction mass spectrometry system using a linear ion trap as a container and a mass analyzer: the amount of molecular reagents introduced is not easy to control

[0018] 1. The vacuum degree in the ion trap is not easy to measure directly, and the vacuum degree in the ion trap is often estimated indirectly by measuring the vacuum degree in the vacuum chamber (the air pressure in the ion trap is slightly higher than that in the chamber)

[0019] 2. It is easier to input a buffer gas into the ion trap to form a vacuum gradient, but it is not easy to form a specified vacuum gradient.

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