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Traceable PM2.5 granular composite material and its preparation method

A technology of PM2.5 and composite materials, which is applied in the analysis of materials, particle suspension analysis, suspension and porous material analysis, etc., can solve the problem of complex pathogenicity and toxicity of PM2.5 haze particles, complex preparation of model materials, The simulation degree is not high, and the effects of easy promotion, simple preparation method and high luminous efficiency are achieved.

Active Publication Date: 2017-11-21
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, due to the complex composition of PM2.5 haze particles and certain pathogenicity and toxicity, the existing technology generally uses model materials to study the process of PM2.5 haze particles invading the human body, but the preparation of model materials is complicated and difficult. The degree of simulation is not high, which limits its wide application. Therefore, a simpler and more efficient PM2.5 particle tracking method is urgently needed

Method used

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  • Traceable PM2.5 granular composite material and its preparation method
  • Traceable PM2.5 granular composite material and its preparation method
  • Traceable PM2.5 granular composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Soak the glass fiber filter membrane that collected PM2.5 haze particles with the atmospheric collector (MH1200, atmospheric particle sampler, Yancheng Tianyue Instrument Co., Ltd.) into ethanol for 12 hours, then take out the filter membrane, and dissolve the The ethanol solution with PM2.5 particles was placed in a vacuum freeze-drying oven (Scientz-ND, freeze-drying machine, Ningbo Xinzhi Biotechnology Co., Ltd.), set the freezing temperature to -200 ° C, freeze-dried for 50 hours, and fully evaporated and dried to obtain Treated PM2.5 particles;

[0041] 2) ZnGa prepared by solid-state method 2 o 4 : Cr 3+(According to the patent CN201510650991.2) after stirring and sonicating, dissolve it into water, let it stand for 24 hours, take the suspension, and use a centrifuge to centrifuge at a high speed at 10000rpm to obtain near-infrared super long Afterglow ZnGa 2 o 4 : Cr 3+ nanoparticles.

[0042] 3) Take ZnGa 2 o 4 : Cr 3+ Dissolve 0.02g of nanoparticle...

Embodiment 2

[0046] Using the same method as in Example 1, using polyvinyl alcohol with a mass fraction of 5% to replace the cyclodextrin used, a traceable PM2.5 particulate composite material was prepared.

[0047] The traceable PM2.5 particle composite material prepared in this example was used to characterize the properties of the sample, and the test results were similar to Example 1.

Embodiment 3

[0049] Adopt the same method of embodiment 1, use near-infrared long afterglow luminescent material Zn 3 Ga 2 Ge 2 o 10 :Cr 3+ (According to the patent CN103215041A) is compounded with PM2.5 particles to obtain a traceable PM2.5 particle composite material.

[0050] The traceable PM2.5 particle composite material prepared in this example was used to characterize the properties of the sample. The test results were similar to those in Example 1, and the traceable PM2.5 particle composite material had better long afterglow performance.

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Abstract

The invention relates to a traceable PM2.5 granular composite material and its preparation method. The traceable PM2.5 granular composite material can be obtained by applying a chemical crosslinking composite method to PM2.5 grain and nanometer lighting grain collected in the air. These materials with nano-structures have stable lighting performance, traceability, high biological penetration and other performances, and can be used as biological and functional materials of haze formation, hazard, defense simulation and pathological study; the traceable PM2.5 granular composite material is applied to related fields.

Description

technical field [0001] The invention belongs to the field of biological materials, in particular to a traceable haze particle composite material and a preparation method thereof, specifically a method of chemically cross-linking PM2.5 particles with a luminescent material to prepare traceable and high-penetrating PM2.5 particles Haze particles, used for smog defense simulation and pathological research. Background technique [0002] With the rapid expansion of my country's economic scale and the acceleration of urbanization, atmospheric aerosol pollution is becoming more and more serious, and there are more and more incidents of visibility deterioration caused by aerosols. Smog has become one of the important reasons that endanger human public health. It is PM2.5 particles. NO in PM2.5 particles 3- , SO 4 2- , Cl - ,NH 4+ , Na + The concentration of plasma is higher than that of normal atmospheric particles, and the main pollutants are heavy metals such as As, Cr, PB, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N15/075
Inventor 孙康宁葛平慧李爱民成圆张书品祁宇凡
Owner SHANDONG UNIV
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