System for automatic separation of inert gas in small gas quantity environment sample

Abstract

The invention discloses a system for automatic separation of inert gases in a small gas quantity environment sample. The system comprises a vacuum device, a control device, a water removing device, asponge titanium high-temperature adsorption device, a gas chromatography separation device, and an inert gas collecting and measuring device. The vacuum device is used for enabling the system to be ina vacuum state. The control device is used for realizing automatic control of the whole inert gas separation. The water removing device is used for removing water and carbon dioxide from the small gas quantity environment sample gas under the control of the control device. The sponge titanium high-temperature adsorption device is used for removing active gases in the small gas quantity environment sample gas under the control of the control device. The gas chromatography separation device is used for separating argon gas and krypton gas in the small gas quantity environment sample gas under the control of the control device. The inert gas collecting and measuring device is used for collecting and measuring the argon gas and the krypton gas separately. According to the system for automaticseparation of the inert gases in the small gas quantity environment sample, automatic simultaneous extraction and separation of the krypton gas and the argon gas in the small gas quantity environmentsample can be realized, and problems that an inert gas extraction and separation is long in time consumption and complex in operation, complex samples of components cannot be processed, sample processing efficiency is low, and manual operation error rate is high are solved.

Description

technical field [0001] The present application relates to the technical field of inert gas separation, in particular to a system for automatic separation of inert gas in small-volume environmental samples. Background technique [0002] Noble Gas Radioactive Isotopes 85 Kr, 81 Kr, 39 Ar is a good isotope for dating. The isotope trace analysis method based on laser cooling atoms has important applications in geohydrology. The efficient separation and extraction of inert gases from a small amount of environmental sample gas is a key part of its application. . Environmental sample gases mainly refer to dissolved gases in air, groundwater, seawater, and glaciers. The gas components include reactive gases such as nitrogen, oxygen, water, carbon dioxide, and methane, and inert gases such as krypton and argon. Usually, the content of argon is a few percent. , krypton is lower, only a few parts per million. [0003] At present, the inert gas separation and extraction method main...

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Problems solved by technology

[0008] In view of this, this application provides a system for automatic separation of inert gas in small-volume environmental samples, which can realize automatic simultaneous separation and extraction of krypton and argon in small-volume environmental samples, and solves the problem of waste in the extraction and separation of inert gas. It takes a long time, the operation is complicated, the samples with complex components cannot be processed, the sample processing efficiency is low, and the error rate of manual operation is high.

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