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Method for quickly detecting copper ions in solution

A technology of copper ion and detection solution, which is applied in the field of ion detection, can solve the problems of high detection temperature requirements and high cost of raw nucleic acid, and achieve the effects of less sampling volume, flexible design and simple method

Active Publication Date: 2012-08-01
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of raw nucleic acid used in this method is relatively high, and there are requirements for detection temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Preparation of detection solution:

[0037] Take AgNO 3 Add 500 μL of aqueous solution (0.3mol / L) and 15 μL of 0.2M (mol / L) D-glucose aqueous solution to 100 mL of water-soluble starch aqueous solution (mass percentage concentration 0.2%), add 1000 μL of 0.1M NaOH aqueous solution under stirring, and stir for 2 hours , that is, the detection solution containing soluble starch-modified silver nanoparticles is obtained.

[0038] (2) Optimization of detection conditions:

[0039] Take 20mL of the detection solution containing soluble starch-modified silver nanoparticles prepared in step (1), and adjust the pH value of the detection solution to 3.0 with hydrochloric acid aqueous solution with a volume ratio of hydrochloric acid to water of 1:2.

[0040] (3) Cu in water samples 2+ detection of:

[0041] Prepare two test tubes A and B of the same specification; add 9.5mL of the above test solution with a pH value of 3.0 to test tube A and test tube B respectively; add...

Embodiment 2

[0048] (1) Preparation of detection solution:

[0049] Take AgNO 3 Add 500μL of aqueous solution (0.3mol / L) and 15μL of 0.2M D-glucose aqueous solution to 100mL of water-soluble starch aqueous solution (0.2%), add 1000μL of 0.1M NaOH aqueous solution under stirring, and stir for 2 hours to obtain silver modified with soluble starch. Nanoparticle detection solution.

[0050] (2) Optimization of detection conditions:

[0051] Take 20mL of the detection solution containing soluble starch-modified silver nanoparticles prepared in step (1), and adjust the pH value of the detection solution to 2.5 with hydrochloric acid aqueous solution with a volume ratio of hydrochloric acid to water of 1:3.

[0052] (3) Cu in human blood 2+ detection

[0053] Obtain patient blood products from the hospital, digest them with strong hydrochloric acid, then mix the supernatant with equal volumes of water to form a mixed sample, and then adjust its pH with aqueous hydrochloric acid to make it aci...

Embodiment 3

[0060] (1) Preparation of detection solution:

[0061] Take AgNO 3 Add 500μL of aqueous solution (0.3mol / L) and 15μL of 0.2M D-glucose aqueous solution to 100mL of water-soluble starch aqueous solution (0.2%), add 1000μL of 0.1M NaOH aqueous solution under stirring, and stir for 2 hours to obtain silver modified with soluble starch. Nanoparticle detection solution.

[0062] (2) Optimization of detection conditions:

[0063] Take 20mL of the detection solution containing soluble starch-modified silver nanoparticles prepared in step (1), and adjust the pH value of the detection solution to 3.5 with hydrochloric acid aqueous solution with a volume ratio of hydrochloric acid to water of 1:3.

[0064] (3) Cu in human urine 2+ detection

[0065] Obtain a patient's urine sample from the hospital, then mix the urine sample with equal volumes of water to form a mixed sample, and then adjust its pH with aqueous hydrochloric acid to make it acidic, so as not to affect the detection e...

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Abstract

The invention discloses a method for quickly detecting copper ions in a solution. The method comprises the following steps of: reacting a reducible water-soluble compound with a water-soluble compound which contains precious metal in a polyhydroxy water-soluble compound which is used as a protective agent to obtain a detecting solution containing precious metal nano particles, which are modified by the polyhydroxy water-soluble compound; supplying two parts of the same detecting solutions with equal quantities, adding the solution without the copper ions and a solution to be detected, which are isometric, into the two parts of the detecting solutions respectively, and forming a first mixing solution and a second mixing solution which are corresponding; and judging whether the copper ions exist in the solution to be detected or not according to the color variation of the second mixing solution relative to the color of the first mixing solution or according to the variation of the ultraviolet visible adsorption strength or peak position of the second mixing solution relative to that of the first mixing solution, wherein the copper ions are divalent copper ions. The method disclosed by the invention is simple and is flexible in design, free from a large-scale instrument, high in sensitivity and selectivity, strong in stability, good in reproducibility of the detecting result, and low in cost.

Description

technical field [0001] The invention relates to the field of ion detection, in particular to a method for rapidly detecting copper ions in a solution. Background technique [0002] With the rapid development of industry, the environmental hazards of industrial "three wastes" (waste water, waste gas, and waste residue) are becoming more and more prominent, especially the damage to water bodies caused by industrial waste water from industrial and mining, chemical, battery, and electroplating industries is very serious. Large amounts of heavy metals flow into rivers, lakes and oceans along with wastewater, causing pollution. Heavy metal pollution has become one of the main environmental problems in our country. Heavy metals are highly toxic and difficult to degrade. After entering the water body, they can directly act on the human body through drinking water or domestic water, and can also be enriched and absorbed by aquatic animals and plants, endangering the safety of humans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33G01N21/78
Inventor 吴爱国苗利静辛军委
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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