Carrier coating device and coating method for capillary chromatography substrate

Abstract

The invention discloses a carrier coating device of a capillary chromatography base pipe. The carrier coating device comprises an air inlet, an air inlet valve, a flow speed control valve and a copper pressure-resisting pipe which are in sealed connection in sequence through pipelines, wherein the pipeline between the flow speed control valve and the copper pressure-resisting pipe is further connected with an exhausting valve and a pressure gauge; the copper pressure-resisting pipe is provided with a cavity and a sealing cover; and the sealing cover is provided with a leading-in pipe for inserting the capillary chromatography base pipe. The invention further provides a method for coating the capillary chromatography base pipe with a carrier, so that ion liquid coating is well performed, and the coating effect of the ion liquid with middle and strong polarities is enhanced, and furthermore, the separation capability of fixed phases for some complicated samples is improved.

Description

technical field [0001] The invention relates to the technical field of analysis, in particular to a capillary chromatography substrate coating device and a method for coating barium sulfate with the device. Background technique [0002] Gas chromatography has become a very popular analysis method during the development of more than half a century. More than 1,000 stationary phases have been used in research and practical applications, and hundreds of stationary phases have become commercial products. Therefore, understanding the structure of gas chromatography stationary phases , performance and application, it is very necessary for gas chromatography experiment and research. The core of chromatographic separation is the chromatographic column, and the soul of the chromatographic column is the stationary phase. To establish a gas chromatography method, the most important thing is to choose a suitable stationary phase. Therefore, since the advent of gas-liquid chromatography...

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Problems solved by technology

The column capacity of the existing commercially available capillary chromatographic base tubes is small and cannot adapt to high temperature, which limits its application range and separation ability, and cannot meet the needs of existing scientific research and life

[0004] The invention patent with the patent application number 200510135589.7 discloses a quartz capillary chromatographic column and its preparation method. phase and the crystal particle layer between the inner surface of the capillary column; its disadvantages are: 1. the patent utilizes a known dynamic coating device, which is only suitable for the coating of dilute solutions, and has a large resistance to coating The suspension is not applicable; ② the patent only mentions the application of barium sulfate, but the specific preparation process and coating method of barium sulfate microcrystals are not given in the technical proposal;

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