Environmental micro-plastic labeled by metal organic fluorescent complex, and preparation method and application of environmental micro-plastic

A technology of metal-organic complexes, applied in the field of environmental science, can solve the problems of not finding metal-organic complexes, achieve the effects of improving the detection sensitivity of fluorescence imaging, enhancing the intensity of fluorescence emission, and improving the accuracy of detection

Inactive Publication Date: 2018-09-28
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there have been no reports on the application of metal-organic complexes for labeling and tracking microplastic particle pollutants in the environmental field.

Method used

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  • Environmental micro-plastic labeled by metal organic fluorescent complex, and preparation method and application of environmental micro-plastic
  • Environmental micro-plastic labeled by metal organic fluorescent complex, and preparation method and application of environmental micro-plastic
  • Environmental micro-plastic labeled by metal organic fluorescent complex, and preparation method and application of environmental micro-plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Preparation of red fluorescent europium complex labeled environmental polycarbonate (PC) microplastic particles:

[0029] (a) Collect environmental polycarbonate plastic waste (discarded plexiglass doors and windows), grind it in a ball mill after mechanical crushing, and sieve out 5-20 mesh (4.0-0.8 mm), 20-200 mesh (0.8-0.074 mm) ), 200-500 mesh (0.074-0.025 mm), >500 mesh (<0.025 mm) and other polycarbonate microplastic particles;

[0030] (b) 0.1g o-phenanthroline (2-thiophene trifluoroformyl acetone) 3 The europium complex was dissolved in 50mL of 1:1 (v / v) ethanol / dichloromethane mixed solvent to obtain a red fluorescent europium complex organic solution;

[0031] (c) Soak the 200-500 mesh polycarbonate microplastic particles (2g) obtained in step (a) in the europium complex solution (50mL) obtained in step (b) for 24 hours, and the polycarbonate microplastics swell and absorb the europium complex organic solution;

[0032](d) filtering and separatin...

Embodiment 2

[0035] Example 2: Preparation of red fluorescent europium complex labeled polyacrylonitrile-styrene (AS) microplastic particles

[0036] Replace the environmental polycarbonate plastic waste (waste plexiglass doors and windows) in the step (a) of Example 1 with AS plastic waste (plastic kettle), and the other steps are the same as in Example 1 to obtain the red fluorescent europium complex labeled AS Microplastic particle products.

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Abstract

The invention belongs to the technical field of environmental science, and discloses an environmental micro-plastic labeled by metal organic fluorescent complex, and a preparation method and application of the environmental micro-plastic. The preparation method comprises the following steps: (a) dissolving a metal organic fluorescent complex by using an organic solvent to obtain a metal organic fluorescent complex solution, wherein the micro-plastic can be swelled through the organic solvent; and (b) soaking the micro-plastic in the metal organic fluorescent complex solution, and carrying outseparating and drying to obtain the environmental micro-plastic labeled by the metal organic fluorescent complex. The method provided by the invention is simple, the adjustability is strong, and the micro-plastic with different physical and chemical properties is easy to obtain; the generation of pseudo-fluorescent signals can be avoided through the environmental micro-plastic labeled by the metalorganic fluorescent complex; the interference of the spontaneous fluorescence background is less, and the detection accuracy is high; and the fluorescence emission intensity can be enhanced through the increase of the concentration, and the detection sensitivity of fluorescence imaging is improved. The environment micro-plastic provided by the invention is used for simulating the environmental exposure and health effect of environmental micro-plastic pollutants.

Description

technical field [0001] The invention belongs to the field of environmental science, and relates to a microplastic marked with a metal-organic fluorescent complex, a preparation method and an application thereof. The fluorescently labeled microplastics are used to analyze the distribution, migration, metabolism and enrichment rules of microplastic pollutants in complex environmental media and organisms, and provide a new research tool for systematically evaluating the environmental and ecological risks of various microplastics. Background technique [0002] Microplastics generally refer to plastic fragments smaller than 5mm in size. Microplastics mainly come from the degradation or crushing process of plastic waste and directly synthetic plastic microbead products. Due to the widespread use of plastics, a large amount of microplastics flow into lakes and oceans with surface runoff. On the one hand, it directly threatens marine ecology, and on the other hand, it may increase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L25/12C08K5/00C08J7/02G01N21/64
CPCC08J7/02C08J2325/12C08J2369/00C08K5/0091G01N21/6428
Inventor 李战军黄宣旗夏嫣李万斌
Owner JINAN UNIVERSITY
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