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
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[0016] Example 1:
[0017] (1) Take a commercially available quartz capillary tube with an inner diameter of 30m and a length of 0.32mm, put it in an aging box, pass nitrogen into the tube, and keep it at 280℃ for 2h. When it is cooled to room temperature, take out the column tube and insert silicone rubber pads into both ports Seal for use.
[0018] (2) Weigh 90 mg of diethylene glycol polysuccinate stationary phase and 10 mg of polyethylene glycol stationary phase in a 25 mL volumetric flask. Then add a mixed solvent of diethyl ether and dichloromethane with a volume ratio of 2:1 to dissolve, and set the volume for use.
[0019] (3) Use high-pressure homogenization to fill the fixed liquid into the pretreated empty quartz capillary column, seal one end of the chromatographic column with a silicone rubber gasket, put the entire chromatographic column into a constant temperature water bath at 25℃, and connect the other end to the The solvent was evaporated in the vacuum system for ...
Example Embodiment
[0022] Example 2:
[0023] (1) Take a commercially available quartz capillary tube with an inner diameter of 30m and a length of 0.32mm, put it in an aging box, pass nitrogen into the tube, and keep it at 280℃ for 2h. When it is cooled to room temperature, take out the column tube and insert silicone rubber pads into both ports Seal for use.
[0024] (2) Weigh 90 mg of diethylene glycol polysuccinate stationary phase and 10 mg of polyethylene glycol stationary phase in a 50 mL volumetric flask. Then add a mixed solvent of diethyl ether and dichloromethane with a volume ratio of 2:1 to dissolve, and set the volume for use.
[0025] (3) Use high-pressure homogenization to fill the fixed liquid into the pretreated empty quartz capillary column, seal one end of the chromatographic column with a silicone rubber gasket, put the entire chromatographic column into a constant temperature water bath at 25℃, and connect the other end to the The solvent was evaporated in the vacuum system for ...
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