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Detection method and detection sensor for phenylethanolamine A on the basis of composite membrane modification electrode

A technology for modifying electrodes, phenylethanolamine, applied in the field of chemical/biological sensing

Pending Publication Date: 2019-08-16
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But so far, based on Fe 3 o 4 @SiO 2 Electrochemically modified sensor with core-shell nanoparticles loaded on AB-GO carbon nanocomposite film for the detection of phenylethanolamine A (PEA-A) has not been reported

Method used

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  • Detection method and detection sensor for phenylethanolamine A on the basis of composite membrane modification electrode
  • Detection method and detection sensor for phenylethanolamine A on the basis of composite membrane modification electrode
  • Detection method and detection sensor for phenylethanolamine A on the basis of composite membrane modification electrode

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Embodiment Construction

[0040] All the reagents used in the examples are of analytical grade (AR), and the experimental water is all ultrapure water (resistivity ≥ 18.3 MΩ·cm).

[0041] 1. Experimental process

[0042] 1. Fe 3 o 4 @SiO 2 Preparation of Magnetic Nanoparticles

[0043] (1) Fe 3 o 4 Preparation of Magnetic Nanoparticles: Preparation of Fe by Hydrothermal Synthesis 3 o 4 magnetic nanoparticles. First, take 1.35g of FeCl 3 ·6H 2 O and 3.60 g of CH 3 COONa was placed in a 100mL round bottom flask, and then 50mL of (CH 2 Oh) 2 , after ultrasonic dispersion for 30 min under magnetic stirring, a homogeneous yellow transparent solution was obtained. Then, the yellow solution was transferred to a stainless steel polytetrafluoroethylene autoclave, sealed, and reacted at 200°C for 8 hours. After the autoclave was cooled to room temperature, solid-liquid separation was carried out under the action of magnetic force to obtain black magnetic particles. Finally, the black magnetic parti...

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Abstract

The invention discloses a detection method and a detection sensor for phenylethanolamine A (PEA-A) on the basis of a composite membrane modification electrode. The method comprises the following stepsthat: preparing Fe3O4@SiO2 magnetic nanoparticles, preparing AB-GO (Acetylene Black-Graphene Oxide) composite nanomaterials, preparing an Fe3O4@SiO2 / AB-GO / GCE (Glassy Carbon Electrode) composite membrane modification electrode, carrying out phenylethanolamine A detection and the like. A result indicates that the Fe3O4@SiO2 / AB-GO / GCE has a good electrocatalytic oxidation and reduction characteristic on the PEA-A. In 0.10mol / L of PBS (poly(butylene succinate)) buffer solution (pH=6), the response peak current of the modification electrode and the concentration of PEA-A have a good linear relationship, a linear range is 1.0-1000nmol / L, and a detection limit is 0.12nmol / L(S / N=3). The electrode has good reproducibility, stability and antijamming capability. The electrode is used for measuringthe PEA-A in porcine serum and porcine urine samples, and recovery rates are independently 96.0-110.0% and 93.8-104.7%. The electrode is shown to have an important application value in the field of healthful aquaculture biochemical detection.

Description

technical field [0001] The invention belongs to the technical field of chemical / biological sensing, and in particular relates to a method for detecting phenylethanolamine A based on a composite membrane modified electrode and a sensor. Background technique [0002] Phenylethanolamine (PEA) is a natural β 3 - Adrenergic receptor agonist; and phenylethanolamine A (Phenylethanolamine A, PEA-A), is a functionalized β-receptor agonist, is a by-product in the synthesis of ractopamine, because it is not easy to be detected However, it is often overlooked. In recent years, it is often illegally used as a feed additive for animals (poultry, pigs, cattle, etc.) to promote the growth of animal carcasses and increase lean meat percentage, so it is also called "variant lean meat powder". Because clenbuterol can be enriched in animals, long-term or large-scale consumption of by-products such as meat products containing β-receptor agonists will cause toxic side effects, such as heart palp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48B82Y15/00
CPCG01N27/308G01N27/48B82Y15/00
Inventor 曹忠何军意李雨晴唐彤雨毛先辉朱钦肖忠良龙姝
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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