Automatic solid phase extraction equipment

A technology of extraction equipment and solid-phase extraction column, which is applied in the field of automatic solid-phase extraction equipment, can solve problems such as poor liquid addition accuracy, lower test results, and easy volatilization of reagents, so as to improve separation speed, improve working environment, and reduce labor intensity. Effect

Active Publication Date: 2014-07-23
BEIJING CHUXIANGFEI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Manual operation is used to add liquid, the accuracy of liquid addition is poor, and the test effect is poor;
[0006] (2) The reagents used in the extraction process are volatile and have high requirements for operators;
[0007] (3) In the experiment, to test a batch of diesel oil, it is necessary to take multiple samples and perform repeated operations. The labor intensity of the operator is high, and the stability of manual repeated operations is poor, which further reduces the test effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figures 1 to 8 As shown, the automatic solid-phase extraction equipment of the present invention includes: a frame 10, a sampling device 1, a sample turntable 2, an extraction column turntable 3, a liquid addition device 6, a pressurizing device 5, an extract solution turntable 4 and a control device (not shown).

[0043] The frame 10 is welded with alloy materials. The sample carousel 2, the extraction column carousel 3 and the extract carousel 4 are arranged in order from high to low, and are respectively installed on the frame 10 through the rotating bracket 7, so that the sample carousel 2, the extraction column carousel 3 and the extract carousel 4 can be rotated horizontally. The outer circumference of the extraction column turntable 3 is provided with a plurality of extraction column support holes 301 for supporting the solid phase extraction column 9. The solid phase extraction column 9 is a prior art, and is placed on the extraction column support ho...

Embodiment 2

[0056] This embodiment is basically the same as Embodiment 1, except that the moving mechanism of the liquid adding device is not limited to the swing assembly, and can be any mechanism capable of moving the liquid adding head to a position above the solid phase extraction column.

Embodiment 3

[0058] This embodiment is basically the same as Embodiment 1, the difference is that the liquid feeding device of this embodiment includes a liquid feeder, a liquid feeding head and a positioning mechanism, the liquid feeder is connected to the liquid feeding head through a pipeline, and the liquid feeding head passes through The positioning mechanism is arranged above the hole of the extraction column holder. When working, the turntable of the extraction column rotates, turning the solid phase extraction column to the bottom of the liquid filling head, and the liquid supplier injects solvent into the solid phase extraction column through the liquid filling head, and continues the solid phase extraction column to the bottom of the gas filling head, Moving down, the gas source injects pressurized gas into the solid phase extraction column to complete the extraction.

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Abstract

The invention belongs to the field of extraction equipment for pretreatment of samples, and discloses automatic solid phase extraction equipment. The automatic solid phase extraction equipment comprises a stand, a sample injection device, a sample turntable, an extraction column turntable, a liquid feeding device, a pressure device, an extraction liquid turntable and a control device, wherein the sample turntable, the extraction column turntable and the extraction liquid turntable are successively mounted on the stand from high to low in a horizontal rotation manner; multiple extraction column support holes are formed in the circumference of the outer edge of the extraction column turntable; multiple sample support holes and one liquid injection through holes are formed in the circumference of the outer edge of the sample turntable; multiple extraction liquid pipe support holes are formed in the circumference of the outer edge of the extraction liquid turntable; the sample injection device is used for extracting samples from a sample tube and injecting samples into the solid phase extraction column through a liquid injection through hole; the pressure device is used for feeding solvent into the solid phase extraction column; the control device is used for controlling operation of the whole extraction equipment. By adopting the equipment, the difficulty of labor operation can be lowered, and the testing effect can be improved.

Description

technical field [0001] The invention relates to the field of extraction equipment for sample pretreatment, in particular to an automatic solid-phase extraction equipment. Background technique [0002] Diesel is a complex mixture of hydrocarbons with about 10-22 carbon atoms. Among them, the content of saturated hydrocarbons and aromatics is an important index to measure the characteristics of diesel oil. In order to detect the content of saturated hydrocarbons and aromatics in diesel, the saturated hydrocarbons and aromatics are generally separated from diesel for detection. [0003] The existing measurement methods generally use solid-phase extraction to extract and separate saturated hydrocarbons and aromatics in diesel oil, add internal standards to the saturated hydrocarbon solution and aromatics solution after extraction and separation, and use instruments for gas chromatography analysis. To obtain content data of saturates and aromatics. The existing experimental me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/10B01D15/14G01N30/06
Inventor 刘德泉王丁津赵华江
Owner BEIJING CHUXIANGFEI TECH DEV
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