Microfluid chromatographic separation system and separation method thereof

Abstract

The invention relates to a microfluid chromatographic separation system and a separation method thereof. The system comprises: a module plate, wherein a first side portion and a second side portion are arranged on the two sides of the module plate respectively, an air path system is further arranged on the wall face of the first side portion, a circuit connecting module is further arranged on the wall face of the second side portion, a sealing closing module is further arranged on each independent plate of the module plate, and the sealing closing module is connected with the circuit connection module; a plurality of gas chromatography separation parts, wherein the first side part comprises an upper buckle plate and a lower buckle plate which are matched with each other; and a flow velocity control module which is used for controlling at least one of the gas chromatography separation parts. The system is high in practicability, the sample injection flow rate can be effectively controlled, meanwhile, the needed manual learning cost is reduced, and the detection error and the cost are synchronously reduced.

Description

technical field [0001] The invention relates to the technical field of air detection, in particular to a microfluid chromatographic separation system and a separation method thereof. Background technique [0002] With the development of society and the improvement of residents' environmental awareness, people often live indoors, and the demand for indoor environment is also increasing. At the same time, due to the increasing airtightness of buildings, the circulation of indoor air is reduced. Composite materials, which will lead to a large accumulation of volatile organic compounds in composite materials, which will affect the living environment. Professionals often use gas chromatography devices to perform qualitative and quantitative analysis of complex gas-liquid mixtures. [0003] When the gas chromatographic device conducts quantitative analysis of mixed gas and liquid, the main cause of analysis errors during sample injection and delivery pipelines, and the principle\s...

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Problems solved by technology

[0002] With the development of society and the improvement of residents' environmental awareness, people often live indoors, and the demand for indoor environment is also increasing. At the same time, due to the increasing airtightness of buildings, the circulation of indoor air is reduced. Composite materials, which will lead to a large accumulation of volatile organic compounds in composite materials, which will affect the living environment. Professionals often use gas chromatography devices to perform qualitative and quantitative analysis of complex gas-liquid mixtures.

[0003] When the gas chromatographic device conducts quantitative analysis of mixed gas and liquid, the main cause of analysis errors during sample injection and delivery pipelines, and the principle\structure\injection speed\sampling tools of the sampling system will affect the repeatability of the gas chromatograph. It has a direct impact. Referring to the air quality detection method described in the patent document CN201910355504.8, such a detection scheme cannot control the quantitative intake air, and the sample gas pipe body is easily deformed due to expansion or adjustment, resulting in an unbalanced sample injection and affecting the measurement results;

[0004] In the actual analysis, due to the different gas, liquid, solid and states of the samples, the analysis purposes are different, the requirements are different, and the testing equipment required is also different. The replacement of different testing equipment will greatly increase the basic cost of materials, and at the same time improve artificial learning cost

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