A dual-channel chromogenic direct-reading thin-layer chromatography plate and its preparation method and application
A thin-layer chromatography, dual-channel technology, applied in the direction of analytical materials, instruments, measuring devices, etc., can solve problems such as limited applications, and achieve the effects of increased sensitivity, high-sensitivity color development, and convenient use
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Embodiment 1
[0045] Example 1 Preparation of Alizarin Red@Nano Zirconium Dioxide Compound
[0046] Such as figure 1 As shown, the preparation of alizarin red@nano zirconia complex:
[0047] (1) Prepare 100 mM tetrabutyl zirconate solution, the solvent is toluene / ethanol solution (v:v=1:1), and stir at room temperature for one hour.
[0048](2) Put flexible fiber paper, which can also be one of face tissue and quantitative filter paper, in a suction filtration device, rinse it with ethanol for 2-3 times, remove the moisture therein, and dry it with air flow. Pipette about 10 mL of the tetrabutyl zirconate solution into the suction filtration device, and let it stand for 3 minutes, so that the tetrabutyl zirconate solution is fully soaked in the cellulose paper.
[0049] (3) Turn on the suction filtration device to slowly filter the tetrabutyl zirconate solution through the cellulose paper, then add ethanol for 2-3 rinses, and let stand for 2 minutes.
[0050] (4) Use a suction filter to ...
Embodiment 2
[0053] Example 2 Preparation of phosphomolybdic acid@nano-titanium dioxide composite
[0054] Such as figure 1 As shown, the preparation of phosphomolybdic acid@nano-titanium dioxide composite:
[0055] (1) Prepare a 100 mM tetrabutyl titanate solution, the solvent is a toluene / ethanol solution (v:v=1:1), and stir at room temperature for one hour.
[0056] (2) Put flexible fiber paper, which can also be one of face tissue and quantitative filter paper, in a suction filtration device, rinse it with ethanol for 2-3 times, remove the moisture therein, and dry it with air flow. Pipette about 10 mL of tetrabutyl titanate solution into the suction filtration device, and let stand for 3 minutes, so that the tetrabutyl titanate solution is fully soaked in the cellulose paper.
[0057] (3) Turn on the suction filtration device to slowly filter the tetrabutyl titanate solution through the cellulose paper, then add ethanol for 2-3 rinses, and let stand for 2 minutes.
[0058] (4) Use ...
Embodiment 3
[0061] Embodiment 3 prepares the thin-layer plate containing alizarin red (phosphomolybdic acid) / nano zirconium dioxide (titanium) composite as developer
[0062] Take a thin-layer chromatography strip of aluminum base, paper base or plastic base material, the size is about 10cm*5cm. Firstly, the position of the ratio shift value of the substrate to be tested is determined, which is accomplished by thin-layer chromatography-iodine chromogenic method. After determining the position, print 5 microliters of the aforementioned nano-color developer dispersions with a thin-layer strip printer at the substrate ratio shift value Rf by about 1 mm, that is, 2 mm in width, such as image 3 shown. During the printing process, the color area on the other side is covered with aluminum foil to protect it from interference. After the double color areas are printed, the middle hydrophobic partition is performed with 5% dichloromethoxysiloxane. Activate the thin-layer chromatography plate in...
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