Portable solid phase extracting device

Abstract

The invention provides a portable solid phase extracting device which comprises a support (4), a solid phase extracting column (3) and a segmented air pressurizer (2), wherein the upper part of the support (4) is provided with a panel; the panel is a solid phase extraction column baffle plate (1) which is provided with a plurality of first through holes; the solid phase extracting column (3) is a through pipe which is filled with absorbent fillers; the top end of the through pipe is provided with an outer edge; through the outer edge, the solid extracting column (3) is arranged in the first through holes in a suspended manner; the segmented air pressurizer (2) is positioned above the solid phase extracting column (3), and comprises an air cylinder (10) and a piston push rod (9); the air cylinder (10) is sleeved out of the piston push rod (9) in a penetrating manner, the bottom outer diameter of the piston push rod (9) is matched with the inner diameter of the top end of the solid extraction cylinder (3); and the piston push rod (9) is sleeved on the solid phase extraction column (3) in the penetrating manner. The portable solid phase extracting device is simple and convenient to use, low in cost, free from energy consumption, and safe and environment-friendly.

Description

technical field [0001] The invention relates to a solid phase extraction device which uses a solid adsorbent to pretreat samples, in particular to a detachable and convenient solid phase extraction device. Background technique [0002] Modern analysis technology is developing towards fast, micro, trace, multi-component, and high selectivity. Various new precision instruments emerge in an endless stream, and higher and higher requirements are put forward for the sample pretreatment process. However, 60% or more of the analysis operation time is spent on sample pretreatment, and most of the experimental errors come from the sample pretreatment process. Solid phase extraction (SPE) is an effective means of separation and purification of trace or trace substances. Most of the current commercial extraction columns use granular packing (about 30-60 μm) in liquid chromatography, and the column materials are mostly plastic. (usually polypropylene), glass and stainless steel, with p...

AI Technical Summary

Problems solved by technology

The solid phase extraction column is usually a cylindrical or disc-shaped object filled with micron-sized particle adsorbents. The solid phase extraction device generally adopts a suction-type working mode. Therefore, in addition to the main part that can withstand negative pressure, a vacuum pump, blower Auxiliary components such as dry device, inert gas source, large-capacity sampler and buffer bottle, these supporting devices are various and complex, and require power support

In recent years, a solid-phase extraction column (Packed-Fiber Solid-Phase Extraction, PFSPE, disclosed in Patent No. 200510123148.5) with nanomaterials as the adsorbent has appeared. Nanomaterials are different from commonly used micron-scale granular fillers. Now Some solid phase extraction devices are not suitable, so it is necessary to develop an economical, practical, environmentally friendly and efficient solid phase extraction device for nanomaterial solid phase extraction columns

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