Silica microballoon solid phase extract column

A technology of solid-phase extraction small column and solid-phase extraction column, which is applied in the field of chemical analysis and testing equipment, can solve problems such as enrichment differences, and achieve the effects of good enrichment, wide application range, and easy-to-obtain materials

Inactive Publication Date: 2010-11-17
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many solid-phase extraction agents developed, but because different extraction agents have great differences in the enrichment of compounds with different polarities, and in addition, there are many types of pollutants in the environment, it is necessary to develop more solid-phase extraction agents. Extractants, laying the foundation for better, more convenient sample handling techniques
Preliminary experiments on silica microspheres as a solid-phase extraction agent show that it has great potential in the enrichment of organic pollutants in the environment, and related studies based on silica microspheres as a solid-phase extraction agent Related research has not been reported in the literature

Method used

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  • Silica microballoon solid phase extract column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] 1. Place a porous sieve plate at the bottom of the solid phase extraction column, weigh 300mg of silica microspheres into the solid phase extraction column tube, and then place another porous sieve plate on the silica microsphere Ball top, compacted. Obtain silica microsphere solid phase extraction column.

[0021] 2. Prepare a mixed solution of fenpropathrin, cyhalothrin, fenvalerate and bifenthrin with a concentration of 10 μg / mL as a standard stock solution.

[0022] 3. Take lake water, river water, reservoir water and other environmental water samples for the application test of the present invention. After the water sample was passed through a 0.45 micron microporous membrane, the acidity was adjusted to pH7, and then the standard stock solution was added to a concentration of 1 μg / L for fenpropathrin, cyhalothrin, fenvalerate and bifenthrin as The sample solution was used for the examination of the application of the present invention.

[0023] 4. Before extrac...

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Abstract

The invention belongs to the field of chemical test instruments and equipment and relates to a solid phase extraction column based on a silica microballoon substrate. The extraction column has low cost, simple preparation and better enrichment capacity on various organic pollutants and inorganic ions; and the performance index of the extraction column is tested by using fenpropathrin, cyhalothrin, fenvalerate, bifenthrin and the like as target pollutants, therefore, the extraction column has better stability and repeatability and is suitable for rapid enrichment of various pollutants. Silica microballoons have no document reports on the aspect of enriching the environment pollutants. An environment sample is introduced into a preparation technology, and an effective enrichment technology of the pollutants in the environment sample is established, therefore, the invention provides a new better sample treatment path for effectively monitoring the environment pollutants.

Description

1. Technical field [0001] The invention belongs to the field of chemical analysis testing instruments and equipment, and relates to a solid-phase extraction column based on silica microspheres, which uses silica microspheres as an environmental sample pretreatment material for organic pollution in environmental water samples Accumulation of pollutants and inorganic pollutants. 2. Background technology [0002] The background and development status of this technical field are roughly as follows: the matrix of environmental samples is very complex, and the concentration of target pollutants is usually relatively low. In order to obtain better analytical test results, pre-enrichment and purification of samples has become a key link. Solid-phase extraction has become the main technical method for the enrichment of organic pollutants in environmental water samples due to its advantages of simple operation, rapidity, ease of automation, and less use of organic solvents. The perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10
Inventor 周庆祥高园园
Owner HENAN NORMAL UNIV
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