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A kind of micro gas chromatography column chip and preparation method thereof

A micro gas chromatography and chromatography technology, applied in the field of micro gas chromatography column chips and their preparation, can solve the problems of large volume and high power consumption of the chromatographic column chips, and achieve the effects of improving efficiency and reducing volume

Active Publication Date: 2020-10-30
苏州感闻环境科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0004] An object of the present invention is to solve the technical problems of large volume and high power consumption of the chromatographic column chip in the prior art when separating multi-component and multi-type environmental samples

Method used

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  • A kind of micro gas chromatography column chip and preparation method thereof
  • A kind of micro gas chromatography column chip and preparation method thereof

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Embodiment Construction

[0036] figure 1 A schematic structural diagram of a micro gas chromatography column chip 1 according to the first embodiment of the present invention is shown. Such as figure 1 As shown, the micro gas chromatographic column chip 1 includes two mutually independent chromatographic channels, a connecting channel and a solenoid valve 40 . The two chromatographic channels are respectively the first chromatographic channel 10 and the second chromatographic channel 20 . The first chromatographic channel 10 is filled with a solid stationary phase, and the second chromatographic channel 20 is filled with a liquid or colloidal stationary phase. The connecting channel is arranged between the first chromatographic channel 10 and the second chromatographic channel 20 , and is used to communicate with the first chromatographic channel 10 and the second chromatographic channel 20 . The solenoid valve 40 is located in the connecting passage for opening or closing the connecting passage. ...

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Abstract

The invention provides a minisized gas-chromatographic-column chip and a preparation method thereof. The chip comprises at least two mutually-independent chromatographic channels, which are filled with stationary phases in different phase states; at least one connecting channel, which is connected with and located between two adjacent chromatographic channels and used for realizing communication between two adjacent chromatographic channels; and at least one solenoid valve, which is arranged in one connecting channel and used for opening or closing the connecting channel to enable gas to flowthrough the two chromatographic channels communicating with each other via the connecting channel when the connecting channel is opened. According to a scheme of the invention, usage of a single chromatographic channel or combined usage of a plurality of chromatographic channels can be realized through opening or closing of the solenoid valves, so active selection can be performed according to ambient gas; i.e., the chromatographic channels can be filled with a plurality of stationary phases; and thus, the variety of separated gas is greatly increased, and combined usage of a plurality of chromatographic columns is not needed for mixed gas with complicated background, which enables the size of a system to be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of gas separation, in particular to a micro gas chromatography column chip and a preparation method thereof. Background technique [0002] Ambient air quality, fixed-point pollution sources, sudden environmental pollution and other fields have a large impact on polluting gases, such as various VOCs and CO, CO 2 , SO 2 and H 2 Permanent gases such as S all have the demand for rapid detection. Due to the complex and diverse background gas components, and most of the detectors on the market have the characteristics of poor anti-interference ability, therefore, it is often necessary to combine chromatographic techniques. [0003] The chromatographic separation technology is used to realize the separation of mixed pollutant gases, so as to solve the technical bottleneck of poor detector resolution. However, the existing separation chromatographic columns are limited in their ability to separate gas species du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/60
CPCG01N30/606G01N30/6095
Inventor 孙建海史志存孙旭辉
Owner 苏州感闻环境科技有限公司
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