Gas quantity method measuring device with function of acquiring pure gas

Abstract

The invention relates to a gas quantity method measuring device with a function of acquiring pure gas. The gas quantity method measuring device comprises a reaction bottle, a quantifying device and a gas collecting device, wherein the reaction bottle is connected with the quantifying device through a conduit. The gas quantity method measuring device is characterized by further comprising a buffer bottler for containing the reaction bottle; a sealing cover is arranged at the top part of the buffer bottle; a gas three-way outlet and a separable sample bottle are arranged on the sealing cover; the sample bottle enters the reaction bottle after being separated; a liquid outlet which is connected with one port of the liquid three-way outlet is arranged in the bottom of the buffer bottle; and another port of the liquid three-way outlet is connected with the quantifying device through another conduit. The gas quantity method measuring device has the beneficial effects that the reaction bottle is put into the sealed buffer bottle (which is filled with inert gases) to be reacted, so that the generated gas can be quantified simply and conveniently; and moreover, a pure isotope analysis gas sample can be obtained, so that a later isotope analysis step is simplified, and the test efficiency is improved.

Description

technical field [0001] The invention relates to a gas volume measurement device in a laboratory, in particular to a gas volume measurement device capable of obtaining pure gas. Background technique [0002] In the study of soil inorganic carbon, it is often necessary to measure both the content of inorganic carbon and the abundance of carbon isotopes at the same time. At present, the determination of inorganic carbon content is generally carried out by the gas volume method, and the measurement of isotope abundance is by the phosphoric acid method. The gas volume method has a simple structure and is easy to operate. Advantages It is widely used in the determination of gas production in various chemical reactions and biological processes. The current measuring device is to connect the gas reaction bottle with the U-shaped quantitative tube, and calculate the gas production or gas consumption according to the height of the liquid level in the U-shaped tube. However, there is ...

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Problems solved by technology

However, there is air in the reaction bottle, which cannot produce pure gas samples, so it cannot be used for analysis and testing of isotopes and other later projects; The purpose of pure gas samples, but expensive vacuum equipment must be used in the test, and it is time-consuming and cannot quantify the generated gas

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