An integrated device for sample pretreatment and detection based on microfluidic chip technology for measuring various indicators of soil

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...

AI Technical Summary

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

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