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A chromatographic column and its preparation method and application

A chromatographic column and column tube technology, applied in the field of analytical chemistry, can solve problems such as the difficulty of boron nitride coating, the failure of molecular sieve chromatographic column separation effect, etc., to avoid irreversible adsorption and adsorption of water, to solve the problem of poor separation effect, to solve Difficult to apply effects

Active Publication Date: 2021-02-09
武汉谱立科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The technical problem to be solved by the present invention is to provide a chromatographic column to solve the technical problem of difficult coating of boron nitride in the capillary chromatographic column in the prior art, the technical problem of molecular sieve chromatographic column failure after repeated use, and the technical problem of porous polymer The technical problem of the poor separation effect of oxygen and methane in non-methane total hydrocarbons by chromatographic column

Method used

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  • A chromatographic column and its preparation method and application
  • A chromatographic column and its preparation method and application
  • A chromatographic column and its preparation method and application

Examples

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Embodiment 1

[0060] A chromatographic column, comprising a chromatographic column tube and a stationary phase coating coated on the inner wall of the chromatographic column tube, the chromatographic column tube is a quartz capillary column tube, and the stationary phase coating is composed of a porous polymer and a boron nitride inorganic adsorbent. Porous polymers are produced by reacting styrene and divinylbenzene as polymer monomers. The boron nitride inorganic adsorbent in this embodiment is encapsulated in the pores of the porous polymer.

[0061] Preparation of the column:

[0062] Pretreatment quartz capillary column tube: Prepare a quartz capillary column tube with a length of 30m and an inner diameter of 0.53mm, rinse the inner wall of the quartz capillary column tube with 3mol / L hydrofluoric acid solution, and then rinse the inner wall of the quartz capillary column tube with distilled water At least once, until it is cleaned, then place the quartz capillary column tube in an ag...

Embodiment 2

[0081] A chromatographic column, comprising a chromatographic column tube and a stationary phase coating coated on the inner wall of the chromatographic column tube, the chromatographic column tube is a quartz capillary column tube, and the stationary phase coating is composed of a porous polymer and a boron nitride inorganic adsorbent. Porous polymers are produced by reacting styrene and divinylbenzene as polymer monomers. The boron nitride inorganic adsorbent in this embodiment is encapsulated in the pores of the porous polymer. The boron nitride inorganic adsorbent used in this example is porous boron nitride.

[0082] Preparation of the column:

[0083] Pretreatment quartz capillary column tube: Prepare a quartz capillary column tube with a length of 50m and an inner diameter of 0.32mm, rinse the inner wall of the quartz capillary column tube with 2mol / L hydrofluoric acid solution, and then rinse the inner wall of the quartz capillary column tube with distilled water for ...

Embodiment 3

[0096] A chromatographic column, comprising a chromatographic column tube and a stationary phase coating coated on the inner wall of the chromatographic column tube, the chromatographic column tube is a quartz capillary column tube, and the stationary phase coating is composed of a porous polymer and a boron nitride inorganic adsorbent. Porous polymers are produced by reacting styrene and divinylbenzene as polymer monomers. The boron nitride inorganic adsorbent is encapsulated in the pores of the porous polymer. The boron nitride inorganic adsorbent used in this example is porous boron nitride.

[0097] Preparation of the column:

[0098] Pretreatment quartz capillary column tube: Prepare a quartz capillary column tube with a length of 40m and an inner diameter of 0.25mm, rinse the inner wall of the quartz capillary column tube with 3mol / L hydrofluoric acid solution, and then rinse the inner wall of the quartz capillary column tube with distilled water At least once until it...

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Abstract

The invention provides a chromatographic column and its preparation method and application. The chromatographic column comprises: a chromatographic column tube and a stationary phase coating coated on the inner wall of the chromatographic column tube; the chromatographic column tube is a quartz capillary column tube; the chromatographic column tube is a quartz capillary column tube; The mixed stationary phase coating is composed of a porous polymer and a boron nitride inorganic adsorbent; the porous polymer is produced by reacting styrene and divinylbenzene as polymer monomers. The inventor unexpectedly found in experiments that boron nitride can be firmly coated on the chromatographic column by combining with porous polymer, and meanwhile, the combination of boron nitride and porous polymer can well separate methane and oxygen. Therefore, compared with the prior art, the chromatographic column provided by the present invention solves the technical problem that boron nitride is difficult to coat in the capillary chromatographic column in the prior art, the technical problem that the molecular sieve chromatographic column fails after multiple uses, and the porous polymer The technical problem of the poor separation effect of the chromatographic column on the oxygen and methane in the non-methane total hydrocarbons.

Description

technical field [0001] The invention relates to the field of analytical chemistry, in particular to a chromatographic column and its preparation method and application. Background technique [0002] Boron nitride is a new type of inorganic synthetic material, among which porous boron nitride is a new type of porous non-oxide material. It has excellent adsorption performance, stable chemical performance, insulation performance, acid and alkali corrosion resistance and hydrophobicity. Compared with traditional porous supports, porous boron nitride materials also have special hydrogenation properties and selective adsorption properties. Therefore, boron nitride has great potential in the field of chromatography analysis. [0003] Chromatography is a method of separation and analysis, and an important detection method in analytical chemistry. The core of chromatography is the chromatographic column, which is directly related to the separation effect and detection accuracy. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/22G01N30/02G01N30/60
CPCB01D15/22G01N30/02G01N30/6078
Inventor 雷晓强赵全友于永庆陆书云刘媚媚李莹
Owner 武汉谱立科技有限公司
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