Solid-phase extraction device

An extraction device and extraction unit technology, applied in the field of analytical chemistry, can solve problems affecting the accuracy of experimental analysis results, changes in water sample characteristics, inconvenient transportation, etc., and achieve the effects of saving experimental costs, prolonging service life, and facilitating collection and analysis

Active Publication Date: 2015-07-15
BEIJING POLYTECH INSTR
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  • Claims
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Problems solved by technology

Obviously, there are at least two disadvantages in this method of operation: on the one hand, it is not only troublesome to operate, but also inconvenient to transport; on the other hand, due to the influence of light and temperature during transportation, it is easy to cause water sample characteristics changes, which in turn affect the accuracy of the experimental analysis results

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "first", "second" and so on are only used for the purpose of description, and should not be understood as indicating or implying relative importance.

[0014] like figure 1 , figure 2 As shown, the solid phase extraction device of the present invention comprises a sampling pump 1, a pressure gauge 2, a flow meter 3 and a vertically arranged solid phase extraction unit 4; the sampling pump 1, the pressure gauge 2 and the flow meter 3 pass through the pipe The roads are connected in series successively; the solid-phase extraction unit 4 comprises an external adapter 41, an external adapte...

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Abstract

The invention relates to a solid-phase extraction device. The solid-phase extraction device comprises a sampling pump, a pressure meter, a flow meter and a vertically arranged solid-phase extraction unit which are connected with one another in series, wherein the solid-phase extraction unit comprises a lower external adapter, an upper external adapter, a connector and two filtration tanks; the top of the lower external adapter is fixedly connected with the bottom of a first filtration tank; the top of the first filtration tank is detachably connected with the bottom of the connector; the top of the connector is detachably connected with the bottom of a second filtration tank; the top of the second filtration tank is fixedly connected with the bottom of the upper external adapter; the bottom of the lower external adapter and the top of the upper external adapter penetrate through a flow guide pipe; the first filtration tank, the second filtration tank and the connector are internally connected with one another; annular limiting slots are formed in the periphery of the inner wall of the connector; a non-return pressing sheet, a solid-phase extraction film and a support screen plate are arranged in sequence from top to bottom of each limiting slot. The solid-phase extraction device is easy to operate and convenient to transport, and is capable of preprocessing water samples on sampling sites.

Description

technical field [0001] The invention relates to the field of analytical chemistry, in particular to a solid phase extraction device. Background technique [0002] In the sample pretreatment technology, the analysis of trace organic matter in surface water and groundwater is usually: first, collect 1 to 5 liters of water samples into water sample bottles; then, transport the water sample bottles to the laboratory; finally, The water sample is filtered, precipitated, and the trace organic matter in the water sample is enriched by solid phase extraction technology. Obviously, there are at least two disadvantages in this method of operation: on the one hand, it is not only troublesome to operate, but also inconvenient to transport; on the other hand, due to the influence of light and temperature during transportation, it is easy to cause water sample characteristics changes, which in turn affect the accuracy of the experimental analysis results. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/10
Inventor 田莉娟李东旭王斌王军
Owner BEIJING POLYTECH INSTR
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