A pretreatment device for carbon and hydrogen isotope analysis of gas and liquid inclusions in minerals

Abstract

The present invention relates to a carbon and hydrogen isotope analysis pre-treating device for gas and liquid inclusion in minerals. The analysis pre-treating device comprises a high-temperature bursting system, an oxidization system, a separating purifying system, a carbon dioxide collecting pipe, a reduction system, a hydrogen collecting pipe and a vacuum system which are in sealing connection in turn, wherein the high-temperature bursting system comprises a quartz pyrolysis tube and a first vacuometer; a copper oxide furnace is used as the oxidization system; the separating purifying system comprises a fifth cold trap, a second vacuometer and a first cold trap which are in sealing connection in turn; the reduction system comprises a second cold trap, a first vacuum measurement device, a zinc furnace, a second vacuum measurement device and a third cold trap; and the vacuum system comprises a mechanical pump and a diffusion pump. The first vacuometer of the analysis pre-treating device provided is utilized to monitor the bursting degree of a sample, so as to determine the bursting temperature and the bursting time of various samples. Due to the design of the first vacuum measurement device and the second vacuum measurement device, the analysis pre-treating device can be used for monitoring the reduction degree of water.

Description

technical field [0001] The invention relates to a carbon and hydrogen isotope analysis pretreatment device for gas and liquid inclusions in minerals, in particular to a mineral inclusions that can grasp the bursting degree of mineral inclusions and can quickly reach the standard for the vacuum degree of the entire system. Carbon and hydrogen isotope analysis pretreatment device for gas and liquid inclusions. Background technique [0002] The analysis of carbon and hydrogen isotopes in the inclusions is to open the inclusions to extract the compounds containing carbon and hydrogen under vacuum conditions, and convert them into carbon dioxide and water respectively through the oxidation of high-temperature copper oxide. trap (-196°C), then replace the liquid nitrogen cold trap with a dry ice-alcohol cold trap (-80°C), separate pure carbon dioxide for carbon isotope analysis, and finally remove the dry ice-alcohol cold trap to make the thawed water Through a high-temperature z...

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Problems solved by technology

[0003] The methods of opening inclusions include vacuum ball milling, crushing and high-temperature bursting. At present, the high-temperature bursting method is widely used, but there are certain defects in the current domestic high-temperature bursting method.

Firstly, it is difficult to quantify the degree of bursting of inclusions, which may be caused by isotope fractionation due to insufficient bursting time; secondly, there are many types of mineral inclusions, and it is difficult to determine the bursting temperature of various inclusions; thirdly, due to the complexity of traditional sample preparation devices, metal furnaces More, if the atmosphere brought into the system by the next sample to be prepared passes through the high-temperature metal furnace, it will make it extremely difficult for the system to reach the vacuum level, which will not only waste a lot of time, but also affect the accuracy of the analysis results

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