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Application and method of detecting sulfate ion based on cysteamine-modified nano-gold solution

A technology of sulfate ion and nano-gold, which is applied in the measurement of color/spectral characteristics, etc., can solve problems such as difficult to achieve online high-throughput rapid detection, unfavorable large-scale promotion, expensive large-scale instruments, etc., to achieve high specificity and practicability Strong, fast detection response effect

Inactive Publication Date: 2011-12-21
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

[0006] The purpose of the present invention is to provide the purposes and methods of detecting sulfate ion based on cysteamine-modified nano-gold solution, to overcome the low sensitivity or the need for complicated operation steps and expensive large-scale instruments in the existing method for detecting sulfate ion, It is difficult to achieve online high-throughput rapid detection, which is not conducive to large-scale promotion

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  • Application and method of detecting sulfate ion based on cysteamine-modified nano-gold solution
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  • Application and method of detecting sulfate ion based on cysteamine-modified nano-gold solution

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[0030] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0031] The present invention will be further illustrated below with the specific implementation of the present invention for sulfate ion detection. For the experimental methods that do not indicate the specific conditions, usually follow the conventional conditions or the conditions suggested by the manufacturer. The room temperature in the present invention refers to the laboratory temperature of 23-26° C. for carrying out the operation.

[0032] Ultraviolet-visible spectrum detection: multifunctional microplate reader Synergy Mx (BioTek, USA), scanning wavelength range: 400-800 nm, using a 384-well transparent microplate, and taking 100 μl of reaction solution for determination.

[0033] The gold nanoparticles used in the practice of the present invention were prepared from references (Cao, R.; Li, B. Chem. Commun. (Camb) 2011, 47, 2865.). The specific...

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Abstract

The invention provides a use and method for detecting sulfate ions based on a cysteamine-modified nano-gold solution, the detection method comprising the following steps: adding a buffer solution to the cysteamine-modified nano-gold solution, and after stabilization, Then add the sulfate ion solution to be measured and react, wherein the buffer solution used is sodium acetate-acetic acid; step 2 is to measure the sulfate ion by visual colorimetry or measuring the ultraviolet-visible absorption spectrum to the reaction solution obtained in step 1. concentration. The invention changes the currently commonly used detection mode for detecting sulfate ions, does not need complicated operation process and expensive large-scale instruments, and saves cost. Moreover, the detection method of the present invention has the advantages of high specificity, high sensitivity, fast detection response, etc., and is an effective and practical detection method.

Description

technical field [0001] The invention relates to a use and a method for detecting sulfate ions based on a cysteamine-modified nano-gold solution. Background technique [0002] The content of sulfate ions in water is an important indicator for classifying the chemical types of water bodies, evaluating water quality and displaying certain hydrogeochemical characteristics. The determination of its content is very important. [0003] The current conventional methods are shown in the table below (references: Wang Jinqiang. Experimental compilation of water analysis methods [M]. Beijing: Geological Press, 1985): [0004] [0005] The traditional sulfate ion detection method generally needs to add relevant chemical indicators or require complex operation steps and expensive large-scale instruments to complete the detection of sulfate ion, which is time-consuming and laborious, and has a disadvantage in the application of real-time online high-throughput rapid detection. Certain ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/29G01N21/31G01N21/33
Inventor 叶邦策张闽
Owner EAST CHINA UNIV OF SCI & TECH
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