Mixed matrix capillary electrochromatography monolithic column
A technology of capillary electrochromatography and mixed matrix, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of limited types of silanization reagents and limit the wide application of monolithic columns of capillary electrochromatography, and achieve simple column preparation process and conditions , easy introduction, long life effect
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Embodiment 1
[0059]60 μL of γ-MPS and 40 μL of 0.1 mol / L hydrochloric acid were hydrolyzed and condensed for 20 min under the condition of ultrasound, and after cooling to room temperature, 350 μL of toluene, 30 μL of methyl methacrylate (MMA), 0.01 g of AIBN were added to the mixture after ultrasound, and ultrasonic Mix for 20min. Stand still until clarification, use a syringe to suck the supernatant into the pretreated 52cm long capillary tube under microscope observation, control the length of the inhaled mixed solution to 40cm, seal both ends of the capillary tube with silica gel plugs, and place at 60°C Reaction under the oven for 24h. Take out the capillary, remove the silica gel plugs at both ends of the capillary, then place the capillary in an oven at 60°C to continue the reaction for 12 hours, and finally rinse with methanol for 12 hours to remove monomers, porogens and low-molecular compounds that did not participate in the reaction in the chromatographic column , followed by n...
Embodiment 2
[0061] 60 μL γ-MPS and 40 μL 0.1 mol / L hydrochloric acid were hydrolyzed and condensed for 20 min under the condition of ultrasound, after cooling to room temperature, 350 μL toluene, 25 μL butyl methacrylate (BMA), 0.01 g AIBN were added in sequence to the mixture after ultrasound. Mix for 20min. Stand still until clarification, use a syringe to suck the supernatant into the pretreated 52cm long capillary tube under microscope observation, control the length of the inhaled mixed solution to 40cm, seal both ends of the capillary tube with silica gel plugs, and place at 60°C React under constant temperature water bath for 24h. Take out the capillary, remove the silica gel plugs at both ends of the capillary, and then place the capillary in a 60°C constant temperature water bath to continue the reaction for 12 hours, and finally wash it with methanol for 8 hours to remove the unreacted monomers, porogens and low Molecular compounds were then purged with nitrogen in a gas chroma...
Embodiment 3
[0063] 50 μL of γ-MPS and 30 μL of 0.1 mol / L hydrochloric acid were hydrolyzed and polymerized for 20 min under ultrasonication, and after cooling to room temperature, 300 μL of toluene, 20 μL of dodecyl methacrylate (DMA), 0.01 g of AIBN were sequentially added to the mixture after ultrasonication, Mix by sonication for 20 min. Let it stand until clarified, use a syringe to suck the supernatant into the pretreated 52cm long capillary tube under microscope observation, control the length of the inhaled mixed solution to 40cm, seal both ends of the capillary tube with silica gel plugs, and place in a 60°C oven Under reaction 12h. Take out the capillary, remove the silica gel plugs at both ends of the capillary, then place the capillary in an oven at 60°C to continue the reaction for 12 hours, and finally rinse with methanol for 12 hours to remove monomers, porogens and low-molecular compounds that did not participate in the reaction in the chromatographic column , followed by ...
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