Detection method and device for portable rapid visual detection of copper ion content

A detection device and detection method technology, which is applied in the field of analytical chemistry and environmental monitoring, can solve problems that are not suitable for in-situ rapid detection, and achieve the effects of easy portability, strong operability, and simple instruments

Inactive Publication Date: 2012-01-18
FUZHOU UNIV
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Problems solved by technology

[0004] The traditional method is to obtain the catalyst Cu(I) through the chemical reduction of Cu(II), and then catalyze the click chemical reaction, but this method usually takes a long time to detect the change of the signal, and is not suitable for rapid detection in situ

Method used

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  • Detection method and device for portable rapid visual detection of copper ion content
  • Detection method and device for portable rapid visual detection of copper ion content
  • Detection method and device for portable rapid visual detection of copper ion content

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Embodiment Construction

[0018] A portable, rapid and visual detection method for detecting copper ion content is carried out according to the following steps:

[0019] a. Make a simple circuit with a battery and a resistor so that it can generate a platinum electrode with a constant potential of -0.65 V;

[0020] b. Preparation of 13 nm gold nanoparticles;

[0021] c. centrifuging and redispersing the gold nanoparticles obtained in step b into secondary water, and adjusting its pH to 7.0-8.0;

[0022] d. Add the gold nanoparticles obtained in step c to the sulfhydryl chain CH modified with azide group 3 (CH 2 ) 7 SH, mixed, and centrifuged after incubation to obtain azide-functionalized gold nanoparticles;

[0023] e. Add the gold nanoparticles obtained in step c to the mercapto chain HS(CH) modified with alkynyl group 2 ) 15 COOH, mix well, add HC≡CCH after incubation 2 NH 2， Centrifugal cleaning is carried out after the reaction to obtain alkyne-functionalized gold nanoparticles;

[0024] ...

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Abstract

The invention relates to a detection method for portable rapid visual detection of a copper ion content, and the method comprises the following steps: a. preparing a simple circuit, generating a platinum electrode of -0.65 V; b. preparing 13-nm gold nanoparticles; c. centrifuging the gold nanoparticles obtained in step b, dispersing in secondary water; d. obtaining azide-functionalized gold nanoparticles; e. obtaining alkynyl-functionalized gold nanoparticles; f. mixing the functionalized gold nanoparticles prepared in step d and step e, adding a sample solution to be detected; g. putting the potentiostatic platinum electrode obtained in step a into the solution of step f, performing electrolysis within 10 min, observing the color change of the gold nanoparticles. The device of the invention is protable, can realize the rapid and visual detection of the copper ion content in the sample, has strong maneuverability, and has the advantage of simple apparatus.

Description

technical field [0001] The invention relates to a portable, rapid and visual detection method for detecting copper ion content and a device thereof, belonging to the fields of analytical chemistry and environmental monitoring. Background technique [0002] Cu is the third indispensable trace element in the human body. The general chemical index of divalent copper ion in drinking water is 1.0 mg / L. Copper ions can enter the human body through drinking and bioaccumulation, causing coughing, nausea, diarrhea, and even liver and kidney dysfunction and other side effects. Therefore, the detection of Cu is crucial. Usually the methods for detecting Cu include atomic absorption spectrometry, X-ray fluorescence spectrometry, and electrochemical detection, etc., but in these methods, some methods have high cost, expensive instruments, complicated operation, and some methods have poor selectivity and require Due to the complex actual sample pretreatment process, it is necessary to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/30
Inventor 林振宇高森邱素艳陈国南邱彬
Owner FUZHOU UNIV
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