Rare gas determination system based on quadrupole mass spectrometer

Abstract

The invention discloses a rare gas determination system based on a quadrupole mass spectrometer. A laser sample room of the system is connected with a first port of a first four-way pipe through a valve B, a second port of the first four-way pipe is connected with a first impurity absorber through a valve D, a third port is connected with a first port of a first three-way pipe through a valve G, and a fourth port is connected with a molecular vacuum pump and a mechanical pump in sequence; a vacuum gage is installed between the molecular vacuum pump and the fourth port of the first four-way pipe, and a rare gas standard tank is connected between the valve G and the third port of the first four-way pipe; a second port of the first three-way pipe is connected with an ion pump through a valve J, and a third port is connected with a second impurity absorber and the quadrupole mass spectrometer in sequence. The components and the connecting pipes are connected by metal interfaces, and electric heater bands are installed on the outer surfaces of the connecting pipes of the components. The system can realize rare gas mass spectrometry under the premise of ensuring identical precision and accuracy, and has the advantages of low cost and high cost performance.

Description

Technical field: [0001] The invention of this product relates to a rare gas measurement system, in particular to a rare gas measurement system based on quadrupole mass spectrometry. Background technique: [0002] Rare gases include six elements including helium, neon, argon, krypton, xenon, and radon. Due to the unique origin, chemical inertness and relatively low abundance of rare gases, the discovery, research and application of rare gases are relatively late. However, since the trace changes of rare gas components and isotopic compositions can be preserved in geological history, revealed in current research, and can trace the represented geological and geochemical processes, rare gas geochemistry is the current international geology and geochemistry The hotspots and frontiers of geochemical research mainly focus on the basic theory of rare gases and its application in the origin of natural gas, gas source tracing, crust-mantle interaction, tectonics, and terrestrial heat...

AI Technical Summary

Problems solved by technology

The system's ultra-high vacuum acquisition and rare gas purification system are complex in structure, and the routine maintenance process is cumbersome and expensive

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