Solid-phase extraction device capable of realizing multi-column series connection through online switching and extraction method of solid-phase extraction device
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 convenient installation
Inactive Publication Date: 2016-10-12
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 in conjunction with the accompanying drawings and embodiments.
[0022] see figure 1 , the solid-phase extraction device that can be switched online to realize multi-column series in the present invention is composed of multiple groups of parallel passages, and each passage includes a sample / solvent supply unit (i.e. sample / solvent pool 6, for holding The sample or the required solvent, specifically, a medical syringe), the first flow direction switching unit (specifically, the switching valve 7 can be used), the solid phase extraction unit, the second flow direction switching unit (specifically, the switching valve 7 can be used) and the receiving unit (specifically, the switching valve 7 can be used) Can adopt receiving bottle 10), all connect with the conduit 8 that contains interface between each unit, can disassemble and replace. The solid-phase extraction unit can adopt a solid-phase extraction disc or a sol...
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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 capable of switching on-line 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 used for separation, purification and concentration. The core devices 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 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. Contents of the invention [0003] The object of the present invention is to provi...
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Login to View More IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/062G01N2030/009G01N2030/027
Inventor 傅强陈国宁郭鹏琦徐欣雅罗智敏杜玮常春
Owner XI AN JIAOTONG UNIV