Copper ion detection method based on methanobactin functional gold nanoparticles

A technology for detection of methanotrophin and copper ions, which is applied in the field of copper ion detection, can solve the problems of high detection cost, strong equipment dependence, long time consumption, etc., and achieves the effects of high sensitivity, on-site detection and strong specificity.
CN110146497AInactive Publication Date: 2019-08-20HARBIN UNIV OF COMMERCE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN UNIV OF COMMERCE
Publication Date
2019-08-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a copper ion detection method based on methanobactin functional gold nanoparticles, which relates to a method of detecting trace copper ions in a sample. The method comprises the following steps: firstly, methanobactin is used to catalyze hydrogen tetrachloroaurate hydrate for in-situ synthesis of a methanobactin functional gold nanoparticle solution; a pretreated control sample and a to-be-detected sample are then added to the methanobactin functional gold nanoparticle aqueous solution, after standing for a period of time, the color of the to-be-detected sample changesinto blue-violet while the color of the control sample is unchanged, and thus, the detected sample is proved to contain copper ions. The method uses the specific combination between methanobactin andcopper to realize copper ion detection, the specificity is strong, the detection result can be distinguished by naked eyes, no complicated operation step and no large instrument is needed, and quick copper ion detection can be realized.
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Description

technical field

[0001] The invention relates to the technical field of copper ion detection, in particular to a copper ion detection method based on methanotrophin functionalized nano-gold. Background technique

[0002] Copper ion is an essential trace element for the human body and plays an important role in maintaining the life activities of the body. However, excessive intake of copper can cause gastrointestinal dysfunction, liver and kidney function damage, and even life-threatening in severe cases. Not only that, excessive copper ions will also pollute the environment, destroy the structure and function of the aquatic ecosystem, and interfere with the absorption, transportation and accumulation of nutrients by plants. Therefore, it is necessary to develop a method for detecting trace copper ions in food and environment.

[0003] At present, a variety of methods including atomic absorption spectroscopy, X-ray fluorescence spectroscopy, and microprobes have been develop...

Claims

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