Method used for detecting manganese ions in drinking water

A technology for drinking water and manganese ions, which is applied in measurement devices, color/spectral property measurement, instruments, etc., can solve the problem of unreported fluorescence detection of white light materials, and achieve the effect of simple preparation and low detection concentration

Active Publication Date: 2017-07-14
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past 20 years, there have been many literatures on fluorescence detection using rare earth coordination polymers, but no reports on fluorescence detection using white light materials.

Method used

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  • Method used for detecting manganese ions in drinking water
  • Method used for detecting manganese ions in drinking water
  • Method used for detecting manganese ions in drinking water

Examples

Experimental program
Comparison scheme
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specific Embodiment approach 1

[0041] Specific embodiment one: the method for detecting manganese ions in drinking water in this embodiment is carried out according to the following steps:

[0042] 1. Dissolve 0.1g~100g of dibenzoyl tartaric acid rare earth complex in 0.1mL~50mL of N,N’-dimethylformamide solvent to prepare a mixed solution;

[0043] 2. Mix the drinking water and the mixed solution at a volume ratio of 1:1, irradiate with ultraviolet light with a wavelength of 320nm to 324nm, and observe the color of the solution. When the concentration of manganese ions in the drinking water is higher than 0.05ppm, the color of the solution changes from white to blue.

specific Embodiment approach 2

[0044] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the rare earth complexes of dibenzoyl tartrate described in step one are samarium dibenzoyl tartrate complexes, europium dibenzoyl tartrate complexes and diphenyl The terbium formyl tartrate complex is mixed in a mass ratio of 1:1:3-6. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0045] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the preparation method of the dibenzoyl tartaric acid rare earth complex is as follows:

[0046] Add 0.1g~100g of dibenzoyl tartaric acid to 0.1mL~50mL of solvent, then add 0.1mL~2mL of deionizer until dissolved, add 0.01g~100g of rare earth chloride salt with a concentration of 0.01~1mol / L aqueous solution, stirred at room temperature for 2 hours, filtered, washed with water and methanol, and vacuum-dried at 55°C to 65°C to obtain dibenzoyl tartaric acid rare earth complexes; the rare earth chloride salts are samarium chloride, terbium or europium chloride; the solvent is methanol, water or ethanol; the deionizing agent is triethylamine, sodium hydroxide or potassium hydroxide. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a method used for detecting manganese ions in drinking water. The method is used for solving a technical problem that detection concentration of fluorescence detection via quenching or strengthening is high. The method comprises following steps: 1, a dibenzoyltartaric acid rare earth complex is dissolved in a N,N'-dimethylformamide solution so as to obtain a mixed solution; 2, drinking water and the mixed solution are mixed at a volume ratio of 1:1, ultraviolet irradiation is adopted, and the color of an obtained mixed solution product is observed, wherein, when the concentration of manganese ions in drinking water is higher than 0.05ppm, the color of the mixed solution product is changed from white to blue. The method is simple; detection concentration is low; white light materials are used for detecting manganese ions in drinking water, when the concentration of manganese ions is equal to or higher than 0.05ppm, the color of the white materials is changed into blue; detection limit accords with world health organization standards. The invention belongs to the technical field of detecting of manganese ions in drinking water.

Description

technical field [0001] The invention relates to a method for detecting manganese ions in drinking water. Background technique [0002] Manganese is one of the elements widely distributed in the earth's crust, and my country is also one of the countries with the largest reserves of manganese. In 1774, after Gann successfully separated manganese from ore, manganese has been widely used in chemistry, materials, medicine and other fields. Manganese-containing compounds such as potassium permanganate are important disinfectants and are widely used in the medical field. In addition, manganese has a variety of valence states and is often used as a reducing agent in redox chemical reactions. However, it is precisely because of the wide application of manganese ions that it can be enriched in a large amount in the skin, liver and kidney of the human body and cause a series of diseases. In order to reduce the occurrence of these diseases, the World Health Organization stipulates th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01N21/33
CPCG01N21/33G01N21/6428G01N2021/6432
Inventor 李玉鑫李光明赵丽娜
Owner HEILONGJIANG UNIV
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