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Multichannel positive pressure solid phase micro-extraction device

An extraction device, multi-channel technology, which is applied in the separation of solid adsorbent liquid, preparation of samples for testing, chemical instruments and methods, etc. Sample transfer steps, increased efficiency, wide-ranging effects

Pending Publication Date: 2018-09-25
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Not conducive to realization, in order to extract enough organic matter, the volume of the extraction membrane disc is relatively large, which is not conducive to carrying in the field

Method used

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  • Multichannel positive pressure solid phase micro-extraction device

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Experimental program
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Embodiment

[0022] First start the micro motor 1 with adjustable speed, which drives gear Ⅰ2 to rotate, gear Ⅰ2 drives gear Ⅱ3 and gear Ⅲ4 to rotate respectively, connecting rod Ⅰ5 and connecting rod Ⅱ6 drive power shaft 8 to move upward in slideway 7, push rod Ⅱ10 pulls Piston 12 moves upward to draw the sample in sample bottle 15 into glass cylinder 11. When power shaft 8 moves downward in slideway 7, push rod II10 pushes piston 12 to move downward, and the sample in glass cylinder 11 is pressed through branch pipe I16. into the piston II18, and then the sample enters the chromatography column 17 through the micropore of the piston II18, and after being adsorbed by the packing material 21, it is discharged from the water outlet at the bottom of the chromatography column 17 through the sand core 22.

[0023] The one-way check valve I13 can ensure that the liquid in the chromatography column 17 will not be drawn out when the piston I12 is lifted up.

[0024] The one-way check valve II14 c...

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Abstract

Disclosed is a multichannel positive pressure solid phase micro-extraction device. The device includes a micro motor, a mechanical transmission device, glass cylinders, pistons I, needle type small chromatography columns, and pistons II. The output shaft of the micro motor with adjustable rotating speed is connected to a gear I. The gear I is connected to a gear II and a gear III. The gear II is connected to a power shaft through a connecting rod I. The gear III is connected to the power shaft through a connecting rod II. The power shaft is arranged in a slideway. Push rods I on the power shaft are connected to push rods II on the pistons I. The pistons I are arranged in the glass cylinders. The glass cylinders communicate with the needle type small chromatography columns through branch pipes I. The glass cylinders communicate with sample bottles through branch pipes II. The device of the invention adopts the reusable needle type small chromatography columns, filling materials can be freely selected and filled in a laboratory according to the experiment requirements, and the transportation procedure does not affect the enrichment efficiency of the device. Therefore, the efficiencyof field work is improved, and the cost is saved.

Description

technical field [0001] The invention relates to the field of glaciology, in particular to a multi-channel positive pressure solid-phase microextraction device. Background technique [0002] The content of pollutants in snow and ice in alpine regions is often lower than the detection limit of existing laboratory analysis instruments. In order to accurately measure the content of ultra-trace pollutants in carriers such as snow and ice, it is necessary to enrich the pollutants in carriers such as snow and ice. The solid-phase microextraction method is an effective enrichment method. Chromatographic columns and solid-phase microextraction systems for solid-phase microextraction have gradually appeared, as well as solid-phase extraction membrane disk devices suitable for the extraction of organic matter in snow and ice. It is not conducive to realization. In order to extract enough organic matter, the volume of the extraction membrane disc is relatively large, which is not cond...

Claims

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Application Information

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IPC IPC(8): G01N1/34B01D15/22
CPCB01D15/22G01N1/34
Inventor 武小波李全莲王宁练贺建桥
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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