Simple methane gas preparation and collection device and method for laboratory

Abstract

The invention belongs to the technical field of laboratory gas preparation, and discloses a simple methane gas preparation and collection device and method for a laboratory, and the simple methane gas preparation and collection device for the laboratory is provided with a gas preparation structure for generating gas through a reaction of a liquid experimental sample in a conical flask; the gas transition structure is used for realizing circulation transition of gas through two glass guide pipes and an elastic rubber pipe; and the gas collection structure is used for collecting gas in the sample through a vacuum aluminum foil gas bag by utilizing a drainage gas collection method. The gas preparation structure is provided with a conical flask and a silica gel plug, and the silica gel plug is plugged into a bottle opening of the conical flask. The device is used for researching the concentration change of gas such as methane generated by collecting a bacterial liquid sample in a laboratory. The gas preparation and collection device can be self-made by using conventional equipment in a laboratory, the operation is simple, the cost is low, and the preparation and collection of a required gas sample can be effectively realized.

Description

technical field [0001] The invention belongs to the technical field of laboratory gas preparation, and in particular relates to a simple methane gas preparation and collection device and method for laboratory use. Background technique [0002] Microorganisms can act on some special metabolic substrates such as methylphosphonic acid to produce methane gas. Methane is an important greenhouse gas in the atmosphere, and its greenhouse effect is 28 times that of carbon dioxide. It can directly or indirectly affect the global climate and contribute about 20% to global warming. It is of great significance to study the concentration and production mechanism of methane gas for the study of the greenhouse effect and global climate change. In order to detect the methane gas concentration, it is necessary to collect the gas generated in the bacterial liquid sample. [0003] Traditional laboratory gas preparation devices include: solid-liquid normal temperature device, solid-liquid hea...

AI Technical Summary

Problems solved by technology

The above devices and methods are easy to cause leakage or contamination of the sample gas and it is difficult to control the content of the collected gas

[0004] Traditional gas collection methods and equipment, including the use of gas storage tanks, adsorption boxes, etc. to liquefy or absorb and pressurize the gas to collect, are not easy to operate and the specifications are too large, the cost is high, and the production and inspection process is cumbersome

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