Woven aromatic ring polymer-based open tubular capillary column and application thereof
An open-tube capillary column and capillary column technology, which is applied in the field of chromatographic columns, can solve problems such as low column capacity, and achieve the effects of low cost, good separation effect and easy operation.
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Embodiment 1
[0025] A 33.5 cm long quartz capillary (50 µm i.d. × 375 µm o.d.) was first washed with 1 M NaOH solution for 2 h, and then sequentially washed with H 2 O, 1 M HCl solution rinsed for 10 min, H 2 O was rinsed for 30 min, blown dry with nitrogen, and finally dried in an oven at 100 °C for 1 h. The isopropanol solution (50%, v / v) of trimethyloxyphenylsilane was continuously passed into the quartz capillary with a syringe for 10 min, then both ends of the capillary were sealed with a Teflon tube, and placed in a 70 °C water bath for reaction 10 h, repeat this operation step again. Then the capillary column was rinsed with methanol for 30 min, and dried with nitrogen to obtain a capillary column with a phenyl-terminal modified inner wall. The obtained capillary column was flushed with 1,2-dichloroethane solution for 10 min, and dried with nitrogen. Prepare a solution of 50 mg / mL anhydrous ferric chloride in 1,2-dichloroethane, dissolve it by ultrasonication for 10 min, centrifu...
Embodiment 2
[0027] A 33.5 cm long quartz capillary (50 µm i.d. × 375 µm o.d.) was first washed with 1 M NaOH solution for 2 h, and then sequentially washed with H 2 O, 1 M HCl solution rinsed for 10 min, H 2 O was rinsed for 30 min, blown dry with nitrogen, and finally dried in an oven at 100 °C for 1 h. The isopropanol solution of trimethyloxyphenylsilane (50%, v / v) was continuously passed into the quartz capillary with a syringe for 10 min, then both ends of the capillary were sealed with a Teflon tube, and placed in a water bath at 80°C for reaction 10 h, repeat this operation step again. Then the capillary column was rinsed with methanol for 30 min, and dried with nitrogen to obtain a capillary column with a phenyl-terminal modified inner wall. The obtained capillary column was flushed with 1,2-dichloroethane solution for 30 min, and dried with nitrogen. Prepare a solution of 50 mg / mL anhydrous ferric chloride in 1,2-dichloroethane, dissolve it by ultrasonication for 10 min, centri...
Embodiment 3
[0029] A 33.5 cm long quartz capillary (50 µm i.d. × 375 µm o.d.) was first washed with 1 M NaOH solution for 2 h, and then sequentially washed with H 2 O, 1 M HCl solution rinsed for 10 min, H 2 O was rinsed for 30 min, blown dry with nitrogen, and finally dried in an oven at 100 °C for 1 h. The isopropanol solution of trimethyloxyphenylsilane (50%, v / v) was continuously passed into the quartz capillary with a syringe for 10 min, then both ends of the capillary were sealed with a Teflon tube, and placed in a water bath at 80°C for reaction 12 h, repeat this operation step again. Then the capillary column was rinsed with methanol for 30 min, and dried with nitrogen to obtain a capillary column with a phenyl-terminal modified inner wall. The obtained capillary column was flushed with 1,2-dichloroethane solution for 30 min, and dried with nitrogen. Prepare a solution of 100 mg / mL anhydrous ferric chloride in 1,2-dichloroethane, dissolve it by ultrasonication for 10 min, centr...
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