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Tetraphenylethylene pyridinium salt in detection no 3 - and clo 4 - application in

A technology of tetraphenylethylene pyridinium salt and styrene pyridinium salt, which is applied in the application field of tetraphenylethylene pyridinium salt in the detection of NO3- and ClO4-, can solve the problem that perchlorate has not been reported, and achieve simple structure and detection limit Low, synthetically-friendly effect

Inactive Publication Date: 2021-02-05
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on fluorescent probes for perchlorate

Method used

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  • Tetraphenylethylene pyridinium salt in detection no <sub>3</sub> <sup>-</sup> and clo <sub>4</sub> <sup>-</sup> application in
  • Tetraphenylethylene pyridinium salt in detection no <sub>3</sub> <sup>-</sup> and clo <sub>4</sub> <sup>-</sup> application in
  • Tetraphenylethylene pyridinium salt in detection no <sub>3</sub> <sup>-</sup> and clo <sub>4</sub> <sup>-</sup> application in

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Embodiment 1

[0023] Tetraphenylethylene pyridinium salt in the detection of NO 3 - The application in the specific method is as follows:

[0024] 1. Add tetraphenylethylene pyridinium salt into a mixed solvent with a volume ratio of deionized water and dimethyl sulfoxide of 99:1, and prepare 2×10 -5 mol / L tetraphenylethylene pyridinium salt solution.

[0025] 2. Mix 3mL 2×10 -5 Add mol / L tetraphenylethylene pyridinium salt solution into a 4mL cuvette, and then add NaNO to the cuvette 3 Standard samples, respectively make NO in the resulting mixture 3 - The concentration is 0, 0.02, 0.04, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6 , 2.8, 3.0mmol / L, using a UV spectrophotometer to measure its different concentrations of NO 3 - The UV absorption spectrum of the corresponding system (see figure 1 ). Depend on figure 1 It can be seen that the ultraviolet absorption of tetraphenylethylene pyridinium salt is affected by NO 3...

Embodiment 2

[0031] 1. Add tetraphenylethylene pyridinium salt into a mixed solvent with a volume ratio of deionized water and dimethyl sulfoxide of 99:1, and prepare 2×10 -5 mol / L tetraphenylethylene pyridinium salt solution.

[0032] 2. Mix 3mL 2×10 -5 Add mol / L tetraphenylethylene pyridinium salt solution into a 4mL cuvette, and then add NaClO to the cuvette 4 standard sample, respectively make ClO in the resulting mixture 4 - The concentration is 0, 0.04, 0.08, 0.12, 0.16, 0.2, 0.24, 0.28, 0.32, 0.36, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2mmol / L, measured by ultraviolet spectrophotometer Its different concentrations of ClO 4 - The UV absorption spectrum of the corresponding system (see Figure 5 ). It can be seen from Figure 5 that the UV absorption of tetraphenylethylene pyridinium salt is influenced by the ClO 4 - Concentration effect, accompanied by ClO 4 - decrease with increasing concentration. Fluorescence spectrometer was used to measure different concentrations...

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Abstract

The invention discloses an application of tetraphenylpyridine salt for detecting NO3<-> and ClO4<->. A structural formula of tetraphenylpyridine salt is shown as a specification, a compound has the advantages of simple structure, easy synthesis, and high yield, NO3<-> and ClO4<-> can be rapidly and effectively indentified, other ion interference can be avoided, a detection limit can achieve as lowas a 10<-7> mol / L magnitude order, and the tetraphenylpyridine salt can be used for detecting free NO3<-> and ClO4<-> in environment (such as tap water and sewage).

Description

technical field [0001] The invention belongs to the technical field of ion detection, in particular to tetraphenylethylene pyridinium salt in the detection of NO 3 - and ClO 4 - in the application. Background technique [0002] Nitrate (NO 3 - ) is a very important inorganic anion, which widely exists in soil, water, vegetables and food, and has great harm to the environment and human health. Excessive nitrogen content can cause eutrophication of water body, lead to disorder of aquatic ecosystem, decrease of species of aquatic organisms, and destruction of diversity. On the other hand, nitrate easily reacts with hemoglobin in the human body to cause diseases such as gastrointestinal cancer or liver cancer. Therefore, it is of great significance to establish a method for the rapid detection of nitrate ions in colleges and universities. However, there are few reports on fluorescent probes for nitrate ions, especially those with fluorescence-enhanced nitrate ions. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/643
Inventor 赵娜李楠刘艳艳
Owner SHAANXI NORMAL UNIV