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Single-walled carbon nanotubes quartz capillary column and its preparing process

A single-walled carbon nanotube and quartz capillary technology, which is applied in the field of chromatographic separation columns in chromatographic analyzers, can solve the problems of difficult direct separation of mixtures and poor chromatographic separation performance of capillary columns, and achieve the effect of strengthening chromatographic separation capabilities

Inactive Publication Date: 2007-05-30
YUNNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above gas chromatography, liquid chromatography and high performance capillary electrophoresis can basically meet the needs of chromatographic analysis and measurement, but there are still some deficiencies such as difficult direct separation of some mixtures and poor chromatographic separation performance of some capillary columns.

Method used

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  • Single-walled carbon nanotubes quartz capillary column and its preparing process
  • Single-walled carbon nanotubes quartz capillary column and its preparing process
  • Single-walled carbon nanotubes quartz capillary column and its preparing process

Examples

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Effect test

Embodiment 1

[0019] Take a commercially available capillary column with an inner diameter of 0.25 mm and a length of 7.5 m, and make a single-walled carbon nanotube quartz capillary column according to the preparation process of the single-walled carbon nanotube quartz capillary column described in the Summary of the Invention. Use the single-walled carbon nanotube quartz capillary column to directly separate the gas mixture in gas chromatography. The mixed gas is: 1. Methane; 2. Ethylene; 3. Acetylene, at 30°C column temperature and 15.9cm / s carrier gas linear velocity conditions The gas chromatographic separation diagram (Fig. 3) is obtained below.

Embodiment 2

[0021] A commercially available capillary column with an inner diameter of 0.25mm×10m in length was used to prepare a single-walled carbon nanotube quartz capillary column according to the preparation procedure of the single-walled carbon nanotube quartz capillary column described in the Summary of the Invention. The volatile mixture was separated in gas-liquid chromatography after statically coating the ionic liquid stationary solution on a single-walled carbon nanotube quartz capillary column. The mixture is: 1. decane; 2. undecane; 3. n-octanol; 4. methyl caprate; The gas chromatographic separation diagram (Fig. 4) was obtained under the condition of gas linear velocity.

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Abstract

It relates to a single wall carbon nanometer quartz capillary column in the field of chromatographic separation of the analytical chromatograph. It is made of quartz capillary, and single wall carbon nanometer tube formed on the quartz capillary tube wall through chemical bonding method. It comprises three making processes: pretreatment of the quartz capillary column, amino propyl bonding, and the making of single wall carbon nanometer quartz capillary tubes. It is simple, easy for operation, with increased separation performance of the fixing liquid of inside the capillary gas chromatography.

Description

Technical field: [0001] The invention relates to a single-walled carbon nanotube quartz capillary column and a preparation method thereof, belonging to the technical field of chromatographic separation columns in chromatographic analyzers. Background technique; [0002] Those skilled in the art know that the quality of the chromatographic separation column in the chromatographic analyzer is directly related to whether complex substances can be separated and determined. Nowadays, gas chromatography, liquid chromatography and high performance capillary electrophoresis have been widely used in the analysis and measurement of complex substances. The above gas chromatography, liquid chromatography and high performance capillary electrophoresis can basically meet the needs of chromatographic analysis and measurement, but there are still some deficiencies such as difficult direct separation of some mixtures and poor chromatographic separation performance of some capillary columns. ...

Claims

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Application Information

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IPC IPC(8): B01D15/22G01N30/60
Inventor 袁黎明任朝兴李莉艾萍严志宏字敏李正宇
Owner YUNNAN NORMAL UNIV
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