Solid-phase extraction instrument and use method

Abstract

The invention discloses a solid-phase extraction instrument and a use method. The solid-phase extraction instrument comprises a main machine and a solvent barrel lowest liquid level detection system, the main machine comprises a shell, a plurality of extraction units and a public liquid adding unit, the extraction units and the public liquid adding unit are located in the shell, and the structures of the extraction units are the same; each extraction unit sequentially comprises a purification column, a purification column rotating manipulator and a tetrafluoro cock of the purification column which are clamped together from bottom to top, a glass tube is fixed by a purification column fixing clamp, and a receiving cup device is placed at the lower part of a liquid outlet of the purification column; the public liquid adding unit comprises a metering pump, a multi-channel switching valve, a liquid adding waste liquid bottle and a liquid adding transmission device. According to the solid-phase extraction instrument and the use method, the accuracy and the working efficiency of experiments are improved, in addition, the solid-phase extraction instrument integrates activation, balancing, sample loading, cleaning, dehydration drying and elution, can be widely applied to analysis and experiments of samples such as food, medicines and environmental samples, and is particularly suitable for the purification process of detection of samples such as semi-volatile organic compounds and petroleum hydrocarbons.

Description

technical field [0001] The invention relates to the technical field of extractors, in particular to a solid-phase extractor and a method for using it. Background technique [0002] At present, there is no automatic solid-phase extraction experimental device for self-filling purification materials. In addition, many analytical laboratories are temporary and simple experimental devices, which take up a lot of space, have low automation, and are inconvenient to operate, resulting in low test work efficiency. [0003] For example, such as Shimadzu ASPE900 automatic solid phase extraction instrument, its commercialized purification column can only be used once, and the volume is too small to meet the experimental requirements of some unclean samples, and it cannot be filled with sufficient quality fillers. The solution still has problems such as residual color, and the receiver flow rate cannot be adjusted. [0004] Therefore, it is necessary to improve the defects of the above-...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a solid phase extraction instrument and its use method to solve the problem that it can only be used once in the above background technology, and the volume is too small to meet the experimental requirements of some unclean samples, and it cannot be filled with fillers of sufficient quality. , there are problems such as the residual color of the solution after the purification is completed, and the problem that the flow rate of the receiving liquid cannot be adjusted

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