A kind of compound and application for rapid detection of malachite green by direct-reading color development

A technology of complexes and mixed solutions, applied in measuring devices, analyzing materials through chemical reactions, and analyzing materials through observing the influence of chemical indicators, can solve problems such as cumbersome operations and easy diffusion of spots, and achieve The price is easy to get, low price, and the effect of ensuring stability

Active Publication Date: 2021-05-25
ZHEJIANG FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a direct-reading chromogenic reagent for highly sensitive detection of harmful residues of malachite green in food and environmental water bodies, and the chromogenic compound can be printed on the specific ratio shift of the stationary phase of the thin-layer chromatography plate to produce Obtained a new type of direct-reading chromogenic thin-layer chromatography plate, which can complete the process of chromatographic separation and color development in one step, and overcome the problems of cumbersome operation and easy diffusion of spots in the traditional scheme

Method used

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  • A kind of compound and application for rapid detection of malachite green by direct-reading color development
  • A kind of compound and application for rapid detection of malachite green by direct-reading color development
  • A kind of compound and application for rapid detection of malachite green by direct-reading color development

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Embodiment 1

[0046] 1. Preparation of potassium iodate-Ag / nano-titanium dioxide composite

[0047] (1) Prepare a 100 mM tetrabutyl titanate solution, the solvent is a toluene / ethanol solution (v:v=1:1), and stir at room temperature for one hour.

[0048] The 5% potassium iodate solution prepared by potassium iodate-colloidal silver mixed solution is prepared as follows:

[0049] Colloidal silver solution can be synthesized as follows: 0.5mL of silver nitrate solution (0.01mol / L), 0.5mL of citric acid solution (0.01mol / L) and 19ml of water are mixed in a 150mL round-bottomed flask and stirred vigorously Slowly add 0.6 mL of sodium borohydride solution (0.01 mol / L) dropwise to obtain a yellow nano-silver solution, and continue stirring for 20 min to cool and store for later use.

[0050] The colloidal silver solution is diluted with deionized water according to a dilution ratio of 1-10 times to prepare a potassium iodate solution as a mother liquor.

[0051] Measure 20 mL of colloidal silv...

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Abstract

The invention discloses a compound for rapid detection of malachite green by direct-reading color development and its application, belonging to the fields of food detection and analysis and environmental monitoring. The preparation method of the complex comprises: (1) preparing a titanium alkoxide solution; (2) utilizing suction filtration to make the filter membrane saturated to absorb the titanium alkoxide solution; (3) preparing a potassium iodate-colloidal silver mixed solution; (4) Using suction filtration, the potassium iodate-colloidal silver mixed solution is passed through the filter membrane of the saturated adsorption titanium alkoxide solution prepared in step (2), and the one-step sol-gel reaction generates potassium iodate-Ag / nano-titanium dioxide composite. The present invention uses potassium iodate-Ag / nano-titanium dioxide composite as a color developing agent to detect malachite green in aquatic products or environmental water bodies. The present invention uses potassium iodate / Ag@nano-titanium dioxide composite as a color developing agent to provide a good color developing base material to ensure the stability of color development; while the sensitivity of color development is improved, the time used for color development is also greatly improved reduce.

Description

technical field [0001] The invention relates to the fields of food detection and analysis and environmental monitoring, in particular to a potassium iodate-Ag / nano-titanium dioxide composite, a preparation method thereof, and an application for actually detecting malachite green content in aquatic products and water samples. Background technique [0002] Malachite green (Malachite green, MG) is a basic triphenylmethane dye. Due to its strong antibacterial and antiparasitic effects and low price, it is widely used in the disinfection of pond water and the prevention and treatment of saprolegniasis and rot in fish. Gill disease and parasitic disease, but easily absorbed by fish and metabolized rapidly. Fat-soluble leuco malachite green (LMG) has side effects such as carcinogenic, teratogenic, and mutagenic. Malachite green in aquatic products is a major organic pollutant. Therefore, whether it is to detect the residual level of malachite green in aquatic products or to monito...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01N30/92
CPCG01N21/78G01N30/92G01N2021/775
Inventor 张宜明赖姝毓易炎忠柴婷婷庞林江
Owner ZHEJIANG FORESTRY UNIVERSITY
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