Solid phase extraction column capable of achieving negative pressure suction and using method
A solid-phase extraction column and negative pressure suction technology, applied in separation methods, chemical instruments and methods, selective adsorption, etc., can solve the problems of complicated operation steps, high equipment cost, slow extraction speed, etc., and achieve small volume and cost. Inexpensive, solvent-reduced effects
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Example Embodiment
[0022] Specific embodiment 1: This embodiment is a negative pressure suction solid phase extraction column, including a liquid storage bottle 1, an adsorption packing column 2 and a collection bottle 3; the liquid storage bottle 1 and the adsorption packing column 2 A threaded connection is adopted between the two, and a threaded connection is adopted between the adsorption packing column 2 and the collection bottle 3;
[0023] The liquid storage bottle 1 includes a liquid storage bottle scale portion 1-1, a filter device 1-2 and an external thread portion 1-3 of the liquid storage bottle;
[0024] The liquid storage bottle 1 is a conical bottle body. The lower end of the liquid storage bottle 1 is provided with a liquid storage bottle external thread portion 1-3 for threaded connection with the adsorption packing column 2, and the surface of the liquid storage bottle 1 is engraved There is a liquid storage bottle scale part 1-1 used to characterize the liquid volume in the liquid ...
Example Embodiment
[0034] Embodiment 2: The difference between this embodiment and the first embodiment is: the filter device 1-2 is formed by superimposing a filter mesh on the upper filter membrane, and the filter mesh is a stainless steel filter mesh. The filter membrane is microfiltration membrane, ultrafiltration membrane or nanofiltration membrane. Others are the same as the first embodiment.
Example Embodiment
[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the top of the external thread portion 1-3 of the liquid storage bottle is provided with a sealing gasket, and the sealing gasket is a rubber O-ring. Others are the same as the first or second embodiment.
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