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Detection method of dichlorvos based on CsPbBr3 quantum dot-molecularly imprinted mesoporous material

A detection method and molecular imprinting technology, applied in the field of analytical chemistry, can solve the problems of time-consuming, labor-intensive, complicated operation, etc., and achieve the effects of improving detection sensitivity, promoting diffusion, and improving recognition rate.

Active Publication Date: 2020-01-03
SOUTH CHINA NORMAL UNIVERSITY +1
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  • Description
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Problems solved by technology

However, most of these methods are complex and time-consuming

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  • Detection method of dichlorvos based on CsPbBr3 quantum dot-molecularly imprinted mesoporous material
  • Detection method of dichlorvos based on CsPbBr3 quantum dot-molecularly imprinted mesoporous material
  • Detection method of dichlorvos based on CsPbBr3 quantum dot-molecularly imprinted mesoporous material

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings. It should be understood that the following examples are only used to illustrate the present invention, not to limit the scope of the present invention.

[0043] It is worth noting that the various experimental instruments and reagents used in the present invention are commercially available, and can be purchased through commercial channels.

[0044] Preparation Example

[0045] The molecularly imprinted mesoporous material based on CsPbBr3 quantum dots for the detection of dichlorvos was prepared according to the following steps.

[0046] Step 1: Synthesis of Mesoporous SBA-15

[0047] Refer to the existing literature to synthesize mesoporous SBA-15, add 4g polyoxypropylene polyoxyethylene copolymer solution (P123) template agent, 10mL hydrochloric acid solution (2mol / L) and 90mL distilled water to the flask, stir and dissolve until transparent a...

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Abstract

The invention provides a detection method of dichlorvos based on a CsPbBr3 quantum dot-molecularly imprinted mesoporous material. The method comprises the following steps: preparing the CsPbBr3 quantum dot-molecularly imprinted mesoporous material; drawing a standard working curve of ''fluorescence quenching intensity-dichlorvos concentration'', and calculating a working equation; and determiningthe dichlorvos content in a sample. The method has high detection sensitivity, strong specificity, short detection time and low detection limit.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, and in particular relates to a detection method for dichlorvos based on CsPbBr3 quantum dot-molecularly imprinted mesoporous materials. Background technique [0002] Dichlorvos (DDVP) is a widely used organophosphorus pesticide. Due to its teratogenicity and residual properties, the detection of organophosphorus pesticide residues is becoming more and more important. So far, the detection methods of organophosphorus pesticides mainly include gas chromatography, gas chromatography mass spectrometry, high performance liquid chromatography, electrochemical analysis and fluorescence analysis. However, most of these methods are complex and time-consuming. Therefore, it is of great significance to find a low-cost, simple, fast, selective and sensitive method to detect dichlorvos. [0003] As we all know, molecular imprinting technology has been widely used, and its unique advantages such as specif...

Claims

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Application Information

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IPC IPC(8): C08G77/26C08G77/06C08J9/28C08K3/16B01J20/26G01N21/64C09K11/66B82Y20/00B82Y40/00C08L83/08
CPCC08G77/26C08G77/06C08J9/28C08K3/16B01J20/268G01N21/643C09K11/665B82Y20/00B82Y40/00C08J2383/08G01N2021/6432G01N2021/6439
Inventor 梁勇张立国黄宁
Owner SOUTH CHINA NORMAL UNIVERSITY
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