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Electrochemical sensing method for rutin detection

A sensing method and electrochemical technology, applied in the field of electrochemical sensing, can solve the problems of high price, lack of modified materials, high detection limit, etc., and achieve the effect of wide detection concentration range, strong reproducibility, and good stability

Pending Publication Date: 2021-09-24
JIANGXI AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of determination of rutin, high detection limit, lack of modification materials and high price, and expanding the application path of porous carbon nanosphere sensor, the present invention has invented a kind of phosphorus-doped hierarchical porous carbon nanosphere as a modification material for rutin Ding's electrochemical sensing method

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  • Electrochemical sensing method for rutin detection
  • Electrochemical sensing method for rutin detection
  • Electrochemical sensing method for rutin detection

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Effect test

Embodiment 1

[0027] An electrochemical sensing method for rutin detection, comprising the following steps:

[0028] Step 1: Preparation of modified materials

[0029] Dissolve 2g of β-cyclodextrin in 20mL of ultrapure water, and after ultrasonic dissolution, transfer the resulting solution to an 80mL polytetrafluoroethylene-lined stainless steel autoclave, and perform hydrothermal treatment at 433K for 24h. After naturally cooling to room temperature, the obtained brown mixture was filtered to remove impurities, and then the precursor was obtained by repeated high-speed centrifugation with ultrapure water and ethanol, and dried in a 343K oven. Then calcined at 1073K for 4h at 278K / min in a tube furnace under the protection of N2 to obtain carbon spheres.

[0030] Step 2: Preparation of modified electrodes

[0031] Weigh 1 mg of the prepared carbon spheres and disperse them in 1 mL of ultrapure water, and ultrasonicate for 10 minutes to form a uniformly dispersed and stable mixed solution...

Embodiment 2

[0035] An electrochemical sensing method for rutin detection, comprising the following steps:

[0036] Step 1: Preparation of modified materials

[0037] Dissolve 2g of β-cyclodextrin in 20mL of ultrapure water, and after ultrasonic dissolution, transfer the resulting solution to an 80mL polytetrafluoroethylene-lined stainless steel autoclave, and perform hydrothermal treatment at 433K for 24h. After naturally cooling to room temperature, the obtained brown mixture was filtered to remove impurities, and then the precursor was obtained by repeated high-speed centrifugation with ultrapure water and ethanol, and dried in a 343K oven. Phosphoric acid activation treatment afterwards (mass ratio is phosphoric acid (85%): precursor=4:1), put into oven and dry at 373K, finally in the tube furnace under N2 protection with 1073K calcining 4h, 278K / min, get Phosphorus-doped hierarchically porous carbon spheres.

[0038] Step 2: Preparation of modified electrodes

[0039] Weigh 1mg of ...

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Abstract

The invention discloses an electrochemical sensing method for rutin detection, which is characterized in that a phosphorus-doped hierarchical porous carbon nanosphere modified electrode is used as a working electrode for rutin detection. The phosphorus-doped hierarchical porous carbon nanospheres are synthesized by taking beta-cyclodextrin as a carbon source and combining a hydrothermal method with phosphoric acid activation. When the glassy carbon electrode modified by the phosphorus-doped hierarchical porous carbon nanospheres is used for electrochemical detection, rutin of the modified electrode shows good electrocatalytic activity and oxidase-like reaction, and when a rutin tablet is actually detected, smaller relative standard deviation is shown. The sensor prepared by the invention has the advantages of low sensor material preparation cost, simplicity in operation, rapidness, high efficiency, strong selectivity, high sensitivity and the like.

Description

technical field [0001] The invention relates to the technical field of electrochemical sensing, in particular to an electrochemical sensing method for detecting rutin. Background technique [0002] Rutin, also known as rutin and vitamin P, is a natural flavonol compound. Rutin widely exists in a variety of wild plants and is an important wild plant resource. It has a variety of physiological functions, such as anti-virus, anti-bacterial, analgesic, anti-inflammatory, anti-radiation, anti-myocardial hypoxia, etc., and has occupied an important position in clinical medicine. Due to the increasing demand for natural rutin, the testing requirements for rutin are becoming more and more stringent. Traditional detection methods for rutin mainly include chemical fluorescence, spectrophotometry, capillary electrophoresis and high performance liquid chromatography. However, these methods have certain limitations because of expensive instruments and complicated operation steps. Mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48
CPCG01N27/308G01N27/48
Inventor 范国荣陶欣驰文阳平王鹏廖圣良贺璐罗海杨宇玲张骥司红燕王宗德陈尚钘
Owner JIANGXI AGRICULTURAL UNIVERSITY
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