A method for fluorescent detection of trace uranyl ions
A technique for fluorescence detection and uranyl ion, which is applied in the field of fluorescence detection of trace uranyl ions
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[0019] The present invention will be further described below in conjunction with examples.
[0020] The method for fluorescent detection of trace uranyl ions of the present invention comprises the following steps:
[0021] (a) Add esculin and mesoporous molecular sieves (usually SBA-15, but other types of products, such as SBA-1 or MCM-48, etc.) to the aqueous solution containing uranyl ions for fluorescence detection Obtain the fluorescence intensity of the aqueous solution at a wavelength of 455nm; the ratio of aescin and the mesoporous molecular sieve is 5-15 μmol / L: 0.05-0.2 mg / mL; when the ratio of aescin and the mesoporous molecular sieve is 10 μmol / L respectively When L and 0.1mg / mL, the fluorescence detection effect is the best, and the detection limit is as low as 6nM (ie 6nmol / L; the same below);
[0022] (b) Prepare a solution (blank sample) that does not contain uranyl ions, and measure its fluorescence intensity as F 0 ; The solution that does not contain uranyl...
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