Fluorescence detection reagent for tetravalent cerium ions and fluorescence detection method thereof

A technology for fluorescence detection and cerium ions, which is applied in the field of fluorescence detection of tetravalent cerium ions, can solve the problems of poor selectivity and low sensitivity, and achieve the effect of good selectivity and linear relationship, and strong fluorescence response

Pending Publication Date: 2020-06-26
JIANGXI UNIV OF SCI & TECH
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Problems solved by technology

The fluorescent sensors developed so far for monitoring Ce ions usually suffer from

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  • Fluorescence detection reagent for tetravalent cerium ions and fluorescence detection method thereof
  • Fluorescence detection reagent for tetravalent cerium ions and fluorescence detection method thereof
  • Fluorescence detection reagent for tetravalent cerium ions and fluorescence detection method thereof

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Ce(IV) ions can be used as a single-electron oxidant to promote the oxidation, cyclization, and condensation of o-phenylenediamine to form a yellow fluorescent product 2,3-diaminophenazine. Therefore, a fluorescent detection method for Ce(IV) can be constructed by using o-phenylenediamine to be promoted by Ce(IV) ions to generate fluorescent products. The detection method of o-phenylenediamine to Ce (IV) ion mainly comprises the following steps:

[0021] (1) CH at 4:1 v / v 3 CN-H 2 In the O solvent, add o-phenylenediamine to form a 40 μM o-phenylenediamine solution;

[0022] (2) in step (1) gained o-phenylenediamine solution, add the Ce(IV) ion solution of different concentrations, detect its fluorescence spectrum in 2h, obtain the standard curve figure o...

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Abstract

The invention relates to a fluorescence detection reagent for tetravalent cerium ions and a fluorescence detection method thereof, tetravalent cerium ions are used as a single-electron oxidizing agentto promote o-phenylenediamine to be oxidized, cyclized and condensed to form a yellow fluorescence product 2, 3-diaminophenazine, so that a Ce (IV) ion fluorescence detection method is established. The fluorescence detection method of the tetravalent cerium ions has good selectivity and linear relation and strong fluorescence response, and can quantitatively detect the concentration of the tetravalent cerium ions.

Description

technical field [0001] The invention relates to the field of fluorescence detection of tetravalent cerium ions, in particular to a fluorescence detection reagent of tetravalent cerium ions and a fluorescence detection method thereof. detection. Background technique [0002] Cerium (Ce), the most abundant rare earth element on earth, is widely used industrially as polishing powder, phosphor, magnet, catalyst and ceramic colorant. Although trivalent cerium ions [Ce(III)] mainly exist in minerals, Ce(III) is usually converted into tetravalent cerium ions [Ce(IV)] during the smelting and extraction of Ce. High concentrations of Ce are harmful to the environment and acutely toxic to seeds, and long-term exposure to Ce(IV) ions can cause dysfunction in the human circulatory system. [0003] Currently, instrument-based methods are mainly used to detect Ce(IV) ions, such as inductively coupled plasma-atomic emission spectrometry (ICP-AES), inductively coupled plasma mass spectrome...

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Application Information

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IPC IPC(8): G01N21/64
CPCG01N21/643
Inventor 刘晋彪赖晓静王瑞祥李金辉
Owner JIANGXI UNIV OF SCI & TECH
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