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Polydiethylene glycol succinate quartz capillary column and preparation method thereof

A quartz capillary and polysuccinate technology, which is applied in the field of chromatographic separation column and analytical chemistry, can solve the problems of limited use length, separation effect of packed chromatographic column, service life not as good as that of quartz capillary column, poor permeability of packed chromatographic column, etc. Achieve the effect of long service life, low cost and strong separation ability

Inactive Publication Date: 2011-05-18
GUIZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the permeability of the packed chromatographic column is poor, and the length of use is limited, generally not exceeding 10m
The amount of stationary phase consumed in the preparation of packed chromatographic columns is much larger than that consumed in the preparation of quartz capillary columns, and the separation effect and service life of packed chromatographic columns are not as good as those of quartz capillary columns

Method used

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  • Polydiethylene glycol succinate quartz capillary column and preparation method thereof
  • Polydiethylene glycol succinate quartz capillary column and preparation method thereof
  • Polydiethylene glycol succinate quartz capillary column and preparation method thereof

Examples

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Effect test

Embodiment 1

[0017] (1) Take a commercially available quartz capillary tube with an inner diameter of 0.32 mm and a length of 30 m, put it in an aging box, pass nitrogen gas through the tube, keep it at 280°C for 2 hours, and then take out the column tube after cooling down to room temperature, and insert a silicone rubber pad at both ports Sealed for later use.

[0018] (2) Weigh 90 mg of diethylene glycol polysuccinate stationary phase and 10 mg of polyethylene glycol stationary phase with a 25 mL volumetric flask. Then add diethyl ether and dichloromethane with a volume ratio of 2:1 in a mixed solvent to dissolve, and set to volume for later use.

[0019] (3) Use high-pressure homogenizer to fill the fixed liquid into the pretreated quartz capillary empty column, seal one end of the chromatographic column with a silicone rubber gasket, put the chromatographic column as a whole in a constant temperature water bath at 25°C, and connect the other end to the The solvent was evaporated in t...

Embodiment 2

[0023] (1) Take a commercially available quartz capillary tube with an inner diameter of 0.32 mm and a length of 30 m, put it in an aging box, pass nitrogen gas through the tube, keep it at 280°C for 2 hours, and then take out the column tube after cooling down to room temperature, and insert a silicone rubber pad at both ports Sealed for later use.

[0024] (2) Weigh 90 mg of diethylene glycol polysuccinate stationary phase and 10 mg of polyethylene glycol stationary phase with a 50 mL volumetric flask. Then add diethyl ether and dichloromethane with a volume ratio of 2:1 in a mixed solvent to dissolve, and set to volume for later use.

[0025] (3) Use high-pressure homogenizer to fill the fixed liquid into the pretreated quartz capillary empty column, seal one end of the chromatographic column with a silicone rubber gasket, put the chromatographic column as a whole in a constant temperature water bath at 25°C, and connect the other end to the The solvent was evaporated in t...

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Abstract

The invention relates to a polydiethylene glycol succinate quartz capillary column and a preparation method thereof, and belongs to the technical field of chromatographic separation columns in the field of analytical chemistry. The polydiethylene glycol succinate quartz capillary column consists of a quartz capillary and polydiethylene glycol succinate which is fixed on the inner wall of the quartz capillary by a chemical bonding method. The preparation method of the polydiethylene glycol succinate quartz capillary column comprises the following four processes of: pretreating the quartz capillary column, preparing chromatographic fixing solution, coating a fixed phase and ageing. Compared with the conventional polydiethylene glycol succinate packed chromatographic column, the polydiethylene glycol succinate quartz capillary column has higher theoretical plate number and separating capacity, is not limited by column length, and has long service life. The preparation method has the advantages of high repeatability and low cost and is simple.

Description

Technical field: [0001] The invention relates to a diethylene glycol polysuccinate quartz capillary column and a preparation method thereof, belonging to the technical field of chromatographic separation columns in the field of analytical chemistry. Background technique: [0002] Gas chromatography analysis is an important part of modern analysis technology, widely used in organic matter analysis, chemical product quality control, food testing, drug testing, environmental testing and other fields. Gas chromatographic column is the core component for separation and analysis. The quality of the chromatographic column is directly related to the separation and determination of complex substances. The packed chromatographic column with diethylene glycol polysuccinate as the stationary phase has been applied (GB / T 17377-2008 / ISO 5508: 1990). The advantage of the packed chromatographic column is that the column capacity is large, and the requirements for the sampling system, dete...

Claims

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Application Information

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IPC IPC(8): G01N30/60B01J20/285B01J20/30
Inventor 张明时秦樊鑫李存雄林野方志青
Owner GUIZHOU NORMAL UNIVERSITY
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