Automatic capture digester for trace metal elements in high-purity gas

Abstract

The invention relates to the technical field of gas test analysis, in particular to an automatic capture digester for trace metal elements in high-purity gas, which comprises a capture box, a collection bottle, a metal capture column, an electromagnetic six-way selector valve, an operation mechanism, a treatment box, a liquid storage box, a first constant flow pump and a second constant flow pump, a connecting plate is fixedly mounted at the top of the metal capturing column, a through groove is formed in the top of the capturing box in a penetrating mode, and the connecting plate is slidably connected with the inner wall of the through groove. The trace metal impurities in the high-purity gas can be intensively captured, so that experimenters can conveniently extract and analyze the metal impurities in the high-purity gas, interference of the metal impurities on experiments is eliminated, experimental results are more accurate, and the problem that the existing high-purity gas is usually filled in a metal gas cylinder, and in the transportation and long-term storage and use processes, the high-purity gas is easily mixed with metal impurities such as iron, copper and aluminum, so that the purity of the high-purity gas is reduced, and the experimental analysis result is seriously influenced.

Description

technical field [0001] The invention relates to the technical field of gas test analysis, in particular to an automatic capture and digestion device for trace metal elements in high-purity gas. Background technique [0002] High-purity gases usually refer to gases with a certain level of purity that can be achieved using modern purification technologies. High-purity gases have different purity indicators for different types of gases. In the semiconductor industry, high-purity nitrogen, hydrogen, argon, and helium can be used as carrier gases And protective gas, high-purity gas can be used as the base gas for preparing mixed gas, and in the laboratory, some high-purity gases can also be used in experiments, such as sulfur dioxide or nitrogen dioxide. [0003] The current high-purity gas is usually packed in metal cylinders. During transportation and long-term storage, high-purity gas is easily mixed with metal impurities such as iron, copper, and aluminum, resulting in a decr...

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Problems solved by technology

[0003] The current high-purity gas is usually packed in metal cylinders. During transportation and long-term storage, high-purity gas is easily mixed with metal impurities such as iron, copper, and aluminum, resulting in a decrease in the purity of the high-purity gas, which seriously affects the results of experimental analysis. Therefore, we propose a method that can centrally capture trace metal impurities in high-purity gas, so that experimenters can extract metal impurities in high-purity gas for analysis, and eliminate the interference of metal impurities to the experiment, so that the experimental results are more accurate. Accurate and objective trace metal automatic capture digester to solve this problem

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