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A method for the reversible detection of hypochlorite and hydrogen sulfide

A technology for detecting hypochlorous acid and hypochlorite, which is applied in the direction of material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of poor redox stability, inability to achieve reversible, cyclic detection, etc., and achieve the effect of reversible detection

Active Publication Date: 2015-08-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, it is found that organic compounds are used as fluorescent probes in existing reports, and the disadvantage of most organic compounds is that they have poor redox stability and cannot achieve reversible and cyclic detection.

Method used

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  • A method for the reversible detection of hypochlorite and hydrogen sulfide
  • A method for the reversible detection of hypochlorite and hydrogen sulfide
  • A method for the reversible detection of hypochlorite and hydrogen sulfide

Examples

Experimental program
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Effect test

Embodiment 1

[0086] Using the LS55 type fluorescence detector, select the concentration of Ru-PTZ luminescent probe molecule as 1×10 -5 mol / L, the excitation light wavelength is set to 450nm, the scanning wavelength range is 470nm-700nm, and the buffer solution used is 0.1mol / L phosphate buffer solution with pH=7.4. Add the same concentration (1×10 -4 mol / L) different types of active oxygen species (the active oxygen species added are: sodium hypochlorite, sodium molybdate, H 2 o 2 , · OH), to investigate the response of the probe to different reactive oxygen species. from figure 1 It can be seen that compared with other active oxygen species, the probe has a specific, highly sensitive response to sodium hypochlorite, and the response is very rapid.

Embodiment 2

[0088] Using the LS55 type fluorescence detector, select the concentration of Ru-PTZ luminescent probe molecule as 1×10 -5 mol / L, the excitation light wavelength is set to 450nm, the scanning wavelength range is 470nm-700nm, and the buffer solution used is 0.1mol / L phosphate buffer solution with pH=7.4. Different concentrations of sodium hypochlorite were added to the detection system to observe its effect on the luminescence intensity of the probe. pass figure 2 It can be observed that after sodium hypochlorite is added to the detection system, the luminescence intensity of the probe increases uniformly with the concentration of sodium hypochlorite, while the binding image 3 It can be seen that when the concentration of sodium hypochlorite reaches 1×10 -4 mol / L, the luminescence intensity of the probe increases to reach saturation, after which the luminescence intensity of the probe no longer changes with the increase of the concentration of sodium hypochlorite. accordin...

Embodiment 3

[0090] Using the LS55 type fluorescence detector, select the concentration of Ru-PTZ luminescent probe as 1×10 -5 mol / L, the excitation light wavelength is set to 450nm, the scanning wavelength range is 470nm-700nm, and the buffer solution used is 0.1mol / L phosphate buffer solution with pH=7.4. Add different species to the detection system, 1×10 -4 mol / L of interfering ions or substances, and then add 1×10 -4 mol / L sodium hypochlorite, to investigate whether the added interfering ions or substances will affect the detection, so as to investigate the selectivity of the probe to sodium hypochlorite. according to Figure 5 It can be seen that the response of the probe to the added interfering ions or substances is weak, but it has a strong response to sodium hypochlorite. Therefore, even in the presence of the above-mentioned interfering components or substances, the probe will still produce a specific and highly sensitive response to sodium hypochlorite.

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Abstract

The invention relates to a method for reversible detection on hypochlorite and hydrogen sulfide, and in particularly relates to a light emission detection method which is high in selectivity, high in sensitivity, and capable of reversibly detecting hypochlorite, hydrogen sulfide and oxidation reduction circulation of hypochlorite and hydrogen sulfide, and an application of the method. The method for reversible detection on hypochlorite and hydrogen sulfide is a method which is used for detecting by utilizing light emitting probe molecules, wherein the light emitting probe molecules are a metal complex (L1L2)M-L3Y3 having the structure as shown in a general formula I. The metal complex can be used as the light emitting probe molecules which are high in selectivity, high in sensitivity, and capable of detecting hypochlorite, hydrogen sulfide and oxidation reduction circulation of hypochlorite and hydrogen sulfide in a circulation and reversion manner. By adopting the light emitting probe molecules, circulatory and reversible detection on hypochlorite, hydrogen sulfide and oxidation reduction process of hypochlorite and hydrogen sulfide are achieved.

Description

technical field [0001] The invention relates to a method for reversibly detecting hypochlorite and hydrogen sulfide, in particular to a selective, highly sensitive, reversible luminescent detection method for detecting hypochlorite and hydrogen sulfide and their oxidation-reduction cycle and its application. Background technique [0002] Hypochlorite ion is widely used in people's daily life, such as household disinfectant and bleach. At the same time, hypochlorite ion is also an important reactive oxygen species in organisms. Under the catalysis of myeloperoxidase (MPO), hydrogen peroxide reacts with chloride ions to produce hypochlorous acid. Under normal circumstances, the amount of hypochlorite ions in the organism is maintained at a balanced standard level, but when the amount of myeloperoxidase in the body changes, the amount of hypochlorite ions in the organism will be out of balance, thereby inducing various the emergence of disease. For example: Cardiovascular di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
Inventor 刘凤玉孙世国高玉龙王继涛
Owner DALIAN UNIV OF TECH
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