Sample pretreatment and detection integrated device for determining various indices of soil based on micro-fluidic chip technology

A microfluidic chip, sample pretreatment technology, applied in the preparation of test samples, material analysis by observing the effect on chemical indicators, color/spectral property measurement, etc. It solves the problems of real-time detection, complicated pretreatment steps and centrifugal devices, and achieves the effect of realizing automation and micro-quantification, realizing reaction micro-quantification, and simplifying the detection process.

Active Publication Date: 2018-10-09
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The pretreatment steps of soil samples are complicated and the volume of the centrifuge device makes it difficult for the test personnel to make some instant tests conveniently and effectively

Method used

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  • Sample pretreatment and detection integrated device for determining various indices of soil based on micro-fluidic chip technology
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  • Sample pretreatment and detection integrated device for determining various indices of soil based on micro-fluidic chip technology

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Embodiment 1

[0030] Such as figure 1 , figure 2 and image 3 As shown, a sample pretreatment and detection integrated device based on microfluidic chip technology for measuring various indicators of soil includes a bracket 1, a peristaltic pump 2 and an analysis detection area 3. It is a transparent glass tube 4 with a diameter of 100 mm. The upper end of the transparent glass tube 4 is provided with a hard tube 5 with a diameter of 13 mm and a length of 50 mm. The top of the hard tube 5 is provided with a cover with a tee pipe 6 and the bottom runs through it. The outside of the hard tube 5 is sleeved with a non-woven filter bag 7 with a length of 80 mm, and the lower end of the transparent glass tube 4 is sleeved with a cock 8 through a threaded connection, and the inside of the cock 8 is sequentially provided with a gasket 9, A filter paper 10 with a diameter of 10mm and a filter membrane 11 with a diameter of 5mm, the bottom of the cock 8 is provided with an outlet 12, and the outle...

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Abstract

The invention relates to a sample pretreatment and detection integrated device for determining various indices of soil based on a micro-fluidic chip technology, and belongs to the technical field of soil detection. The device integrates soil pretreatment and later detection, greatly simplifies a soil detection process and achieves automatic and trace detection. In a soil pretreatment stage, a peristaltic pump provides power through a pump pressure principle; the soil to be detected is flushed by a water cycle; the separation and filtration of the soil can be repeated; a substance to be detected in the soil can enter a liquid phase sufficiently; and a detected result is more approximate to a true value. In addition, with the adoption of a micro valve, a sample injection volume can be controlled during detection; and at the same time, a detection error caused by residual liquid in a pipeline is minimized. At last, a paper base micro-fluidic chip is used during the detection; a trace reaction effect is achieved; the use of a large instrument is avoided; and the indices of the soil can be detected by changing a structure of the paper chip.

Description

technical field [0001] The invention belongs to the technical field of soil detection, and in particular relates to a sample pretreatment and detection integrated device for measuring various indexes of soil based on microfluidic chip technology. Background technique [0002] Soil is the basic environmental element that constitutes the ecosystem and the material basis for the survival and development of human beings. Therefore, the analysis and detection of various indicators in the soil has a particularly important significance. At present, my country's soil environment monitoring is affected by soil analysis equipment and technology, and there is still a certain gap compared with the international advanced level. Therefore, the development of some cheap and small analysis equipment can make the new soil analysis technology obtain Extensive application and development. [0003] At present, modern analytical chemistry has made good progress in terms of high efficiency, micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34G01N21/78G01N21/31
CPCG01N1/34G01N21/31G01N21/78
Inventor 余玲陈凤柴慧慧
Owner SOUTHWEST UNIVERSITY
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