Method for detecting trivalent gold ions through water-soluble fluorescence compound
A technology of fluorescent compounds and gold ions, applied in fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of liver and kidney peripheral nervous system damage, cumbersome probe synthesis process, difficult mass production, etc., to achieve excellent water solubility, synthesis The method is non-toxic and low-cost
Active Publication Date: 2018-01-19
XI AN JIAOTONG UNIV
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Problems solved by technology
The performance of simple gold is inert, but the gold ions in the gold salt can interact with enzymes and DNA, which is potentially toxic to the human body and can cause damage to the liver, kidneys and peripheral nervous system. Therefore, the construction of high trivalent gold ions Selective and highly sensitive detection methods are very important
However, the current detection methods for trivalent gold ions are mainly based on organic molecular fluorescent probes. The synthesis process of these probes is cumbersome and difficult to mass-produce, and most of these probes need to be carried out in organic phase or semi-aqueous phase, which limits their use. Application in the detection of trivalent gold ions
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Embodiment 1
[0028] Preparation of TPCANa
[0029] Dissolve 1.5g of TPCA into 20mL of NaOH aqueous solution (1mol / L). After it is completely dissolved, add the solution dropwise to 200mL of absolute ethanol in an ice bath, and a white precipitate will precipitate out. The white precipitate is TPCANa. Sodium carbonate solution was used to wash the precipitate to remove residual TPCA, and the obtained powder was suction-filtered and dried to obtain TPCANa.
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The invention relates to a method for detecting trivalent gold ions through a water-soluble fluorescence compound. The trivalent gold ions having different concentrations can be detected by employinga TPCANa aqueous solution to obtain a corresponding fluorescence curve; the trivalent gold ions concentration is taken as an abscissa, the relative fluorescence intensity (F0-F) / F0 is taken as ordinate, and the standard curve for detecting the concentration of the trivalent gold ions by TPCANa is obtained; in a scope of 40-175 [mu]mol / L, a linear regression equation is (F0-F) / F0=0.00688C-0.28209,a sample containing the trivalent gold ions is detected, the different fluorescence intensity can be detected for the trivalent gold ions with different concentrations by the TPCANa aqueous solution,and the result is substituted into the linear regression equation to obtain the trivalent gold ions concentration. The synthesized salt has good selectivity for identification of the trivalent gold ions, and has the advantages of wide linearity range, high sensitivity, simple synthetic method, and excellent water solubility.
Description
technical field [0001] The present invention relates to Au 3+ The detection and analysis technology specifically relates to a method for detecting trivalent gold ions with a water-soluble fluorescent compound. Background technique [0002] As a noble metal, gold is widely used in many fields such as catalysis, selective oxidation, nanodiagnosis and detection, etc., and it mainly exists in the form of Au(III) in water. The performance of simple gold is inert, but the gold ions in the gold salt can interact with enzymes and DNA, which is potentially toxic to the human body and can cause damage to the liver, kidneys and peripheral nervous system. Therefore, the construction of high trivalent gold ions Selective and highly sensitive detection methods are very important. However, the current detection methods for trivalent gold ions are mainly based on organic molecular fluorescent probes. The synthesis process of these probes is cumbersome and difficult to mass-produce, and mo...
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IPC IPC(8): G01N21/64
Inventor 杨建海刘通秀
Owner XI AN JIAOTONG UNIV
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