A kind of cyanide ion fluorescence detection test paper modified by pillar aromatics and its preparation method and detection method
A technology of fluorescence detection and column aromatics, which is applied in fluorescence/phosphorescence, measuring device, material analysis by optical means, etc. It can solve the problem that cyanide ion concentration cannot be quantitatively judged, and achieve the effect of fast response speed.
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Embodiment 1
[0029] A column aromatic hydrocarbon modified cyanide fluorescence detection paper, the specific preparation method is as follows:
[0030] 1) Oxidation of the test paper: use THF, acetone, purified water to clean with THF, acetone, purified water, soak at 0.1 m, aqueous metho aqueous solution of 5 hours, and add 20 ml of B. Diol, continued to react 1 h, wash to wash with water to dry the excess ethylene glycol, dry it.
[0031] 2) Column aromatic hydrocarbon function of the test strip: Immerse the oxidation of a column aromatic hydrocarbon THF solution, impregnated at 50 ° C for 10 h, then sequentially with THF, methanol ultrasound cleaning filter paper, and then immersed the filter paper after cleaning 0.5 M The borohydride solution of sodium methanol, impregnated at 20 ° C for 1 h, washed with methanol, and drying it.
[0032] 3) Fluorescent indicator of the test paper fixed: Soak the column aromatic functional group of filter paper in 0.05 m 10-methyl acridine solution (tetrah...
Embodiment 2
[0035] A column aromatic hydrocarbon modified cyanide fluorescence detection paper, the specific preparation method is as follows:
[0036] 1) Oxidation of the test strip: Oxidation of the test strip with the same method as in Example 1);
[0037] 2) Column aromatic hydrocarbon function of the test strip: Immerse the oxidation of 0.02 m column aromatic hydrocarbon dichloromethane / methanol (volume ratio 2: 1) solution, at 70 ° C for 15 h, dichloromethane, methanol ultrasound cleaning filter paper, The cleaning filtered filter paper was immersed in a solution of a sodium borohydride solution, reacted at 30 ° C for 3 h, washing with methanol, drying to be used.
[0038] 3) Fluorescence indicator of the test paper fixed: immersed the column aromatic functional grouping filter paper in 0.01 m 10-methyl acridine solution (solvent is tetrahydrofuran), at 30 ° C for 5 h, washed with tetrahydrofuran ultrasound, dry to dry .
[0039] The resulting test strips were soaked in a hydrazine so...
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