Solid-phase extraction device capable of on-line switching to realize multi-column series connection and extraction method thereof
An extraction device and extraction technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as difficulties in series operation, and achieve the effects of strong adaptability, convenient operation, and low production cost
Inactive Publication Date: 2018-12-07
XI AN JIAOTONG UNIV
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Problems solved by technology
The channels of the traditional SPE extraction device are mostly connected in parallel, and each channel works independently. It is difficult to realize the series operation between each channel. However, in practice, some samples can often be obtained by multi-column serial extraction. Recovery and extraction efficiency, therefore, it is necessary to develop a solid phase extraction device with multi-channel series function
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[0021] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0022] see figure 1 , the solid-phase extraction device of the present invention that can be switched online to realize multi-column series is composed of multiple groups of parallel channels, and each channel sequentially includes a sample / solvent supply unit (that is, a sample / solvent pool 6, which is used to hold the sample / solvent pool 6 from top to bottom). sample or required solvent, specifically a medical syringe), a first flow direction switching unit (specifically, a switching valve 7), a solid phase extraction unit, a second flow direction switching unit (specifically, a switching valve 7) and a receiving unit (specifically, a switching valve 7) A receiving bottle 10) can be used, and each unit is connected by a conduit 8 containing an interface, which can be disassembled and replaced. The solid-phase extraction unit can use a solid-phase ext...
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The invention discloses a solid-phase extraction device capable of realizing multi-column series connection through online switching and an extraction method of the solid-phase extraction device. The device comprises multiple parallel channels, wherein each channel is provided with a sample / solvent unit, a switching unit I, a solid-phase extraction unit, a switching unit II and a receiving unit from top to bottom, and the units are connected through guide tubes and can be dismounted and replaced; the working mode of each of the parallel channels is controlled by the two switching units, each solid-phase extraction unit can adopt a solid-phase extraction disc or a solid-phase extraction column and is connected between the two switching units, and the whole device is powered by a pressure reducing pump. According to the device, the channels can work independently, and further, series-connection work of different channels can be realized through simple switching as required, so that multi-stage solid-phase extraction of a sample is realized and the extracted sample can be subjected to leaching and eluting with different solvents through switching. The device has the advantages of being simple in mounting structure, convenient to use, low in production cost, high in adaptability and the like.
Description
technical field [0001] The invention relates to a solid-phase extraction device, in particular to a solid-phase extraction device that can be switched online to realize multi-column series connection and an extraction method thereof. Background technique [0002] Solid-phase extraction (Solid-Phase Extraction, SPE) is a sample pretreatment method for separation, purification and concentration. The core components used include SPE extraction device and SPE cartridge. The channels of the traditional SPE extraction device are mostly connected in parallel, and each channel works independently. It is difficult to realize the series operation between each channel. However, in practice, some samples can be extracted with multiple columns in series. Therefore, it is necessary to develop a solid-phase extraction device with multi-channel tandem function. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a solid-phase extraction device and an extr...
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IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/009G01N2030/027G01N2030/062
Inventor 傅强陈国宁郭鹏琦徐欣雅罗智敏杜玮常春
Owner XI AN JIAOTONG UNIV