Method for extracting nanoparticle from soil

A nanoparticle and soil technology, applied in the field of soil chemistry, can solve the problems of inability to ensure the parallelism and accuracy of analysis, the particle size of the extracted product is easy to introduce human errors, and the separation effect of nanoparticles is not ideal, so as to achieve reliable extraction results and liquid absorption. The speed is fast and uniform, and it is convenient to study the effect of work
CN101607691BInactive Publication Date: 2011-01-12ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2011-01-12
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for extracting nanoparticle from soil, comprising the following steps: the soil is made into soil suspension in a sedimentation container by means of chemical dispersion and supersonic dispersion; according to the sedimentation time of soil particle with grain diameter being less than 100nm, a peristaltic pump is used for driving a special pipette to absorb the soil grain suspension with a required grain diameter range; the absorbed soil grain solution is frozen and dried; and frozen and dried precursor is restored to obtain soil nanoparticle powder body. The method adopts chemical-physical dispersion and uses the peristaltic pump to drive the special pipette to absorb the soil suspension, thereby having high extraction efficiency; the grain diameter of the extracted grain is accordance with the range of nanometer grain level; and the frozen and dried soil grain diameter powder is even and is convenient for follow-on research work.
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Description

technical field

[0001] The invention belongs to the field of soil chemistry, and in particular relates to a method for extracting nanoparticles in soil. Background technique

[0002] Soil nanoparticles (soil nanoparticles) refer to crystalline and amorphous solid substances with particle sizes in the nanometer scale (~1-100nm) formed during the natural soil formation process. Nanoparticles are ubiquitous in soil and are the most important constituents of environmental nanoparticles. Studies have shown that nanoparticles in soil are important element carriers in the environment and have an important impact on the biogeochemical processes of elements; they play a role in the migration, transformation, cycle and bioavailability of heavy metals and organic pollutants in soil. Controlling effect; it strongly influences important environmental processes such as soil genesis, soil physicochemical properties and environmental quality evolution. In addition, artificially synthesize...

Claims

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