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Method for identifying copper ions and iron ions in aqueous solution

An identification method and an aqueous solution technology, which are applied in the identification field of copper ions and iron ions, can solve problems such as unreported application of metal ions, and achieve the effects of fast and sensitive detection, easy availability of reagents, and fast detection speed.

Active Publication Date: 2019-06-07
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the application of polymersomes in the recognition of metal ions in aqueous solution has not been reported

Method used

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  • Method for identifying copper ions and iron ions in aqueous solution
  • Method for identifying copper ions and iron ions in aqueous solution
  • Method for identifying copper ions and iron ions in aqueous solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: The synthesis steps of vesicle A are as follows:

[0034] (1) Dissolve triethylene glycol monomethyl ether, p-toluenesulfonyl chloride, and dichloromethane in a flask, add sodium hydroxide solution (solution pH=12) dropwise under stirring in an ice bath, stir overnight at room temperature, and use Wash and filter with water, dry the lower organic phase with anhydrous sodium sulfate, and evaporate the solvent to obtain a bright yellow oil, add dilute sodium hydroxide solution and stir overnight, separate the layers, wash the aqueous layer twice with dichloromethane, combine the organic phases, and wash with water 3 times, then washed twice with saturated sodium chloride solution, dried with anhydrous sodium sulfate, liquid separation and rotary evaporation of the solvent to obtain bright yellow oil Me-TEG-Ts;

[0035] (2) React Me-TEG-Ts, methyl gallate, potassium iodide, potassium carbonate, and anhydrous N,N-dimethylformamide at 80°C for 60 hours, evaporate ...

Embodiment 2

[0038] Embodiment 2: a kind of method for identifying copper ion in aqueous solution, the steps are as follows:

[0039] 1) Dissolve vesicle A in water to prepare a concentration of 1×10 -4 mol / L reagent solution, irradiate the reagent solution with 365nm ultraviolet light and observe that the fluorescent color emitted by the reagent solution is yellow;

[0040] 2) Mix the aqueous solution to be tested with the reagent solution to obtain a mixed solution, and irradiate the reagent solution with ultraviolet light of the same wavelength as step 1). When the fluorescence of the mixed solution is quenched, it means that the aqueous solution contains copper ions, otherwise it does not.

Embodiment 3

[0041] Embodiment 3: a kind of method for identifying iron ion in aqueous solution, the steps are as follows:

[0042] 1) Dissolve vesicle A in water to prepare a concentration of 1×10 -4 mol / L reagent solution, irradiate the reagent solution with 365nm ultraviolet light and observe that the fluorescent color emitted by the reagent solution is yellow;

[0043]2) Mix the aqueous solution to be tested with the reagent solution to obtain a mixed solution, and irradiate the reagent solution with ultraviolet light of the same wavelength as step 1). When the fluorescence of the mixed solution shows blue fluorescence, it means that the aqueous solution contains iron ions, otherwise it does not.

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Abstract

The invention discloses a method for identifying copper ions and iron ions in an aqueous solution. According to the method, a vesicle A is used as a fluorescent probe; the vesicle A is dissolved in anaqueous solution to be tested, so that a mixed liquid is obtained; the mixed liquid is irradiated with ultraviolet light, and the fluorescence change of the mixed liquid is observed; and the molecular structure of the vesicle A is shown in a figure 1 described in the descriptions of the invention. The method of the invention has the advantages of faster detection, high sensitivity, simpler operation and lower cost.

Description

technical field [0001] The invention relates to a method for identifying copper ions and iron ions, in particular to a method for identifying copper ions and iron ions in aqueous solution. Background technique [0002] At present, more and more heavy metals are used in all aspects of our lives, and most heavy metal ions have the following common characteristics: high toxicity, persistence, non-degradability, etc. The entry of these heavy metal ions into the environment may introduce serious environmental pollution problems. Therefore, the detection and removal of these heavy metal ions is of great significance. Iron and copper are the first heavy metals used by human beings, and are currently being widely used in industrial fields such as equipment, weapons, and electroplating. They are the two most common heavy metal pollutants in the environment. Ferrous ions are irritating to the eyes, skin and mucous membranes. Ingestion by mistake can cause weakness, abdominal pain, n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 张胜曹世仙郑子麒周桂林倪新龙
Owner GUIZHOU UNIV
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