Extraction structure and liquid pretreatment device

An extraction and liquid technology, applied in the fields of extraction structures and liquid pre-treatment devices, can solve the problems of cumbersome operation steps, inaccurate detection results, and excessive waste generation, and achieve the effects of simple operation steps and accurate component detection results.

Active Publication Date: 2016-07-20
张少玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an extraction structure and a liquid pretreatment device to solve the technical problems of cumbersome operation steps, inaccurate detection results, and excessive waste generation in the prior art

Method used

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  • Extraction structure and liquid pretreatment device
  • Extraction structure and liquid pretreatment device
  • Extraction structure and liquid pretreatment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] figure 1 Schematic diagram of the structure of the extraction structure provided for the embodiments of the present invention; as figure 1As shown, the extraction structure provided in this embodiment includes an extraction structure body 3, a cavity 33 and a first hole 31 are arranged inside the extraction structure body 3, and a first filter 333 and an extraction agent layer 332 are arranged in sequence inside the cavity 33 And porous filter disc 331;

[0045] The inside of the first filter sheet 333 is provided with an expansion agent to form a filter sheet that is sealed with water. The filter sheet can pass through an organic solvent. cannot pass;

[0046] The extraction structure can achieve the effects of water blocking, purification and filtration through the arrangement of the first filter 333 , extractant layer 332 and porous filter 331 , and can realize the process of liquid-liquid distribution and solid-phase extraction in one step.

[0047] In the option...

Embodiment 2

[0062] figure 2 Schematic diagram of the structure of the liquid pretreatment device provided by the embodiment of the present invention; image 3 for figure 2 An exploded view of the liquid pretreatment device; as Figure 2-3 As shown, the liquid sample pretreatment device provided in this embodiment includes a storage tank 4 and a transfer device 1, the transfer device 1 is clamped with the extraction structure, the extraction structure extends into the storage tank 4, and the storage tank 4 has been injected with an organic solvent and water, the organic solvent and water are immiscible and layered; by pressing the transfer device 1, the upper layer organic solvent inside the storage tank 4 enters the extraction structure, and the pressure is continued. When the water layer contacts the first filter sheet 333 that is sealed with water, the second Once the filter sheet 333 is blocked, the aqueous solution cannot pass through, which facilitates the liquid transfer of the ...

Embodiment 3

[0071] Figure 4 A schematic structural view of a liquid pretreatment device provided in another embodiment of the present invention; as Figure 4 As shown, the liquid pretreatment device provided in this embodiment includes a storage tank 4 and a transfer device 1. The transfer device 1 is clamped with the extraction structure, and the extraction structure extends into the storage tank 4. The storage tank 4 has been injected with organic solvents and Water, organic solvents and water are immiscible and stratified; by pressing the transfer device 1, the upper organic solvent inside the storage tank 4 enters the extraction structure, and the pressing is continued. When the water layer touches the first filter sheet 333 that is sealed with water, the first When the filter sheet 333 is blocked, the aqueous solution cannot pass through, which facilitates the liquid transfer of the organic solvent containing the components to be measured; the four steps of liquid-liquid extraction,...

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Abstract

The invention relates to the technical field of detection of ingredients in liquid, in particular to an extraction structure and a liquid pretreatment device. The extraction structure comprises a cavity and a first pore passage, wherein a first filtering sheet, an extraction agent layer and a porous filtering sheet are sequentially arranged inside the cavity; an expanding agent is arranged inside the first filtering sheet, so that the filtering sheet capable of realizing sealing when meeting water is formed; the water solution passing can be prevented; the processes of liquid-liquid distribution and solid phase extraction can be realized in one step. The liquid pretreatment device using the extraction structure comprises a storage tank and a transferring device, wherein a filtering membrane used for filtering and support is arranged between the transferring device and the extraction structure; an organic solvent is filtered for many times, so that the detecting result of the ingredients of the collected organic solvent is more accurate; all steps of liquid-liquid distribution extraction, solid-phase extraction purification, microfiltration membrane filtering and transferring of liquid samples containing ingredients to be detected of the ingredients to be detected of the liquid samples can be realized in one step.

Description

technical field [0001] The invention relates to the technical field of liquid component detection, in particular to an extraction structure and a liquid pretreatment device. Background technique [0002] The traditional processing methods of liquid samples to be tested before detection usually include sampling, sample preparation, weighing, liquid-liquid distribution extraction, solid phase extraction agent purification, sample filtration, sample transfer and other steps. At present, these steps are operated independently step by step: for example, after the liquid sample sampling, sample preparation, and weighing steps are completed, a separate appliance and step are required for liquid-liquid distribution and extraction, and then replaced with another appliance or equipment for solidification. The steps of phase extraction and purification, and then the steps of sample filtration that need to use additional equipment and utensils, and the final sample transfer is the same....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34G01N35/00
CPCG01N1/34G01N35/00B01D17/085G01N1/405G01N2001/4016G01N2001/4088B01D33/015B01D33/42B01D33/74
Inventor 张起香
Owner 张少玉
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