Preparation method of carbon quantum dot containing calcium alginate gel for detecting copper ions

A calcium alginate, carbon quantum dot technology, applied in chemical instruments and methods, luminescent materials, material excitation analysis, etc., can solve the problems of complex processing steps, low detection sensitivity, poor selectivity, etc., to achieve excellent forming ability, enhanced Fluorescent properties and good formability
CN102964608AInactive Publication Date: 2013-03-13ZHONGBEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGBEI UNIV
Publication Date
2013-03-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a detection technology of copper ions, and in particular relates to a preparation method of a reduced carbon quantum dot containing calcium alginate gel for detecting copper ions. The preparation method of the carbon quantum dot containing calcium alginate gel for detecting the copper ions comprises the following steps of: preparing fluorescent carbon quantum dots; neutralizing the fluorescent carbon quantum dots, adding sodium borohydride into the neutralized fluorescent carbon quantum dots to perform reduction; mixing deionized water with the neutralized fluorescent carbon quantum dots at equal volume, and adding sodium alginate into the mixture to obtain a sodium alginate sol; and spraying a calcium ion solution to the surface of the sol or soaking the sol into the calcium ion solution to perform crosslinking, and drying to obtain the calcium alginate gel. By using the characteristics that the carbon quantum dots have fluorescent characteristics, the fluorescence of the carbon quantum dots is enhanced after reduction, and the calcium alginate can enhance the fluorescent characteristics of the carbon quantum dots, when the copper ions are detected, the cost of an adopted fluorospectro photometer is low, the sample preparation and treatment steps are simple and easy to operate, and the detection sensitivity is high, so that the calcium alginate gel can be widely used for detecting the copper ions.
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Description

technical field

[0001] The invention relates to the detection technology of copper ions, in particular to a method for preparing calcium alginate gel containing reduced carbon quantum dots for detecting copper ions. Background technique

[0002] Untreated or treated heavy metal elements that do not meet the GB8978-1669 "Integrated Wastewater Discharge Standard" are discharged into rivers, lakes or oceans. Not only are they not biodegradable, but they will be multiplied by thousands of times under the biological amplification of the food chain. enriched, and finally enter the human body. Heavy metals can strongly interact with proteins and enzymes in the human body, making them inactive, and may also accumulate in certain organs of the human body, causing chronic poisoning. As a heavy metal element, copper is the third most abundant transition metal element in the human body after iron and zinc; Cu 2+ An appropriate amount in the human body is beneficial to maintain the nor...

Claims

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