A solution treatment device based on negative pressure suction and solid phase extraction

Abstract

This invention discloses a solution processing device based on negative pressure filtration and solid-phase extraction (SPE). It solves the technical problems of separate processing of the test solution using SPE and filtration, which leads to increased purification costs and lower purification efficiency. It also addresses the issue that existing SPE instruments use a negative pressure space throughout the container, resulting in uneven negative pressure on each liquid guide tube, causing inconsistent separation speeds and even incomplete separation of some liquids. The device includes a filter cup support platform, a sample tray, a vacuum pump, a filtration assembly, and a sealing assembly. By placing the solid-phase extraction resin and the filtration assembly at the bottom of the solution container in the filter cup, negative pressure filtration of the sample solution and solid-phase extraction separation of interfering substances can be achieved simultaneously, minimizing separation steps, shortening purification time, and improving purification efficiency.

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