A device for removing crystallization from a mass spectrometer

Abstract

The invention discloses a device for removing sample introduction crystallization of a mass spectrometer. The device comprises a carrier gas sample introduction pipe, a liquid sample introduction pipe, a three-way cavity body and a connection mass spectrometer sample introduction pipe, wherein the carrier gas sample introduction pipe is connected with the three-way cavity body; the liquid sample introduction pipe is connected with the three-way cavity body; one end of the connection mass spectrometer sample introduction pipe is connected with the three-way cavity body, and the other end is connected with a vacuum cavity body of the mass spectrometer; the liquid sample introduction pipe is used for conveying a liquid sample to be detected; the carrier gas sample introduction pipe is used for conveying carrier gas; the carrier gas blows an outlet of the liquid sample introduction pipe, the included angle among extension lines of the carrier gas sample introduction pipe, the liquid sampleintroduction pipe and the connection mass spectrometer sample introduction pipe ensures that the liquid sample can be blown into the connection mass spectrometer sample introduction pipe by the carrier gas, and enters into the vacuum cavity body of the mass spectrometer by penetrating through the connection mass spectrometer sample introduction pipe. The device can effectively prevent and removeliquid sample introduction crystallization, prevent pipeline blockage, so that the sample introduction efficiency is improved. Intermediate products generated by reacting of the carrier gas and the liquid sample are detected to detect some substances which are not easy to directly detect.

Description

technical field [0001] The invention relates to the field of analytical instruments, in particular to a device for removing crystallization from a mass spectrometer. Background technique [0002] Mass spectrometry has the characteristics of high sensitivity, high accuracy, fast analysis speed and strong qualitative ability, and is one of the most widely used analytical techniques. The sampling system is one of the important technologies in substance detection, and it is also an important part of mass spectrometry. The quality of the sampling system directly affects whether the sample can smoothly enter the testing instrument and be detected by the testing instrument. [0003] At present, in the process of mass spectrometry detection, due to the phase change of the liquid sample entering the vacuum environment from the atmospheric pressure, there will be crystallization problems at the injection nozzle, which will cause the pipeline to be blocked for a long time, and some sa...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a device for removing crystallization from mass spectrometer injection so that the sample to be tested can be ionized smoothly into the mass spectrometer, and to solve the problem of crystallization blockage in the traditional sample injection method to improve the efficiency of sampling; realize the detection of some substances that are not easy to detect directly by detecting the intermediate products of the reaction

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