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
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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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