Sealed sample pool for laser high-temperature molten carbonate sample and use method thereof

Abstract

The invention provides a sealed sample cell for laser high-temperature molten carbonate samples and a use method thereof, a sealed clamping groove is formed in the lower surface of a sample cell upper seat, a sample cell base adopts a convex structure, the tail end of the sample cell upper seat is inserted into the head end of the sample cell base, and the tail end of the sample cell upper seat is inserted into the head end of the sample cell base. A center counter bore is formed in the center of the upper surface of the sample pool base, a stepped center hole penetrating through the sample pool upper base is formed in the sealing clamping groove and composed of a sample containing hole and a sealing hole, a sample limiting step is formed in the connecting position of the sample containing hole and the sealing hole, and a sample is arranged at the sample limiting step. A glass sheet and a spring are arranged between the lower surface of the sample and the upper surface of the sample cell base, an air inlet penetrating through the side wall of the sample cell upper base is formed in the side wall of the sample cell upper base positioned in the sample placing hole, and an air outlet penetrating through the side wall of the sample cell upper base is formed in the side wall of the sample cell upper base positioned in the sealing hole. The sealed sample pool is good in reproducibility and sealing performance.

Description

technical field [0001] The invention relates to the technical field of sealed sample pools, in particular to a sealed sample pool for laser high-temperature molten carbonate samples and a usage method thereof. Background technique [0002] Laser CO 2 The high-energy laser beam emitted by the melting system is focused by the laser lens (the beam spot is about 100 μm) on the thin slice with the determined carbonate micro-domain structure, and the carbonate micro-domain structure is heated with sufficient energy at high temperature to decompose it. produce CO 2 Gas, CO after dehydration, purification, chromatographic column separation and purification 2 The gas is sent to the isotope mass spectrometer to measure the C and O isotope values ​​(δ 13 C PDB and δ 18 o PDB ). In the above process, how to convert CO 2 Gas enrichment in a confined space is an important step. [0003] At present, laser carbonate carbon and oxygen isotope technology, by laser CO 2 It consists o...

AI Technical Summary

Problems solved by technology

[0006] The invention overcomes the deficiencies in the prior art. The existing sample pool has the problems of gas path leakage, cover falling off and falling to the ground, and poor reproducibility, and provides a sealing for laser high-temperature molten carbonate samples. The sample cell and its use method, the zinc sulfide window lens of the sealed sample cell is in a fixed state, will not affect the focus, and has good reproducibility

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