Device for relieving sample introduction capillary pollution by mass spectrometry

Abstract

The invention discloses a device for relieving sample introduction capillary pollution through mass spectrometry. The device comprises a sample storage device, a mass spectrometry detector, a four-waycontrol valve and a filter sand core; the four-way control valve is at least provided with four connectors, every two connectors form a group, the filter sand core is rotatably mounted in the four-way control valve, and the filter sand core is rotatably communicated with any group of connectors; the sample storage device and the mass spectrometry detector are respectively connected to the connectors, and the filter sand core purifies a sample entering from the sample storage device; besides, a purge gas source is connected with connectors; and a tail gas treatment device is connected with theconnectors, and the tail gas treatment device is used for treating waste materials discharged from the filter sand core; a sample to be detected is conveniently filtered and then submitted to be detected, the filtering part is conveniently cleaned subsequently, the service life of the filtering part is prolonged, meanwhile, the structure is stable, and the operation is simple.

Description

technical field [0001] The invention relates to the field of mass spectrometry analysis instruments and equipment, in particular to a device for mass spectrometry to reduce contamination of a sampling capillary tube. Background technique [0002] Mass spectrometry has the advantages of high sensitivity, strong qualitative ability, and good versatility, and has gradually become one of the main technologies for rapid analysis of complex samples. [0003] The sampling system is a key component to ensure that the sample molecules to be tested enter the ionization source efficiently under the premise of ensuring the vacuum of the mass spectrometer. Generally speaking, capillary (quartz capillary, metal capillary) sampling and membrane online enrichment sampling are used. , Atmospheric pressure sampling several main sampling methods. The structure of the capillary sampling method is simple. According to the requirements of the vacuum degree of the ionization area, a capillary wit...

AI Technical Summary

Problems solved by technology

The inner diameter of the commonly used sampling capillary is 50-200 μm, and there are a large number of fine granular impurities in the operating environment of the instrument, which can easily enter the sampling capillary and cause pipeline blockage, thus affecting the high-sensitivity detection of the sample to be tested

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