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

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...

AI Technical Summary

Problems solved by technology

The fluorescent sensors developed so far for monitoring Ce ions usually suffer from the use of toxic inorganic sensing materials, low sensitivity, and poor selectivity.

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