Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of modified electrode and application of determination of free copper ions in feed additive copper lysine

A technology for modifying electrodes and electrodes, applied in the direction of electrochemical variables of materials, etc., can solve the problems of difficult to measure the content of free metal ions, difficult to separate trace elements, etc., and achieve the effects of high accuracy, simple preparation method, and simple detection method.

Active Publication Date: 2017-10-13
ZHONGKAI UNIV OF AGRI & ENG +2
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the country has established standards for the determination of the chelation rate of methionine series trace element amino acid complexes (chelates), but there is no corresponding national standard for lysine (copper, zinc) series of chelates that are easily soluble in water. The difficulty lies in the sample It is difficult to accurately separate trace elements in the chelated state and free state, and they are decomposed to a certain extent in acid and alkali environments, so it is difficult to determine the content of free metal ions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of modified electrode and application of determination of free copper ions in feed additive copper lysine
  • Preparation method of modified electrode and application of determination of free copper ions in feed additive copper lysine
  • Preparation method of modified electrode and application of determination of free copper ions in feed additive copper lysine

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] A method for preparing a modified electrode includes the steps:

[0030] 1) Surface treatment of bare glassy carbon electrode;

[0031] 2) Place the electrode, counter electrode and reference electrode obtained in the previous step in the sulfuric acid solution and scan the voltammogram until the voltammogram is stable to activate the electrode;

[0032] 3) Put the three electrodes in the solution containing the cysteamine chelated metal, and perform cyclic scanning to obtain the final modified electrode.

[0033] For the above method, preferably, in step 1), the surface treatment method is: grinding, polishing, cleaning, and drying; further preferably, the bare glassy carbon electrode (d=3mm) is polished on metallographic sandpaper, in sequence Use 3μm, 0.5μm, 0.03μm particle size Al 2 O 3 Polish the powder to a mirror surface; then use 2mol / LNaOH, (1+1)HNO 3 , 70vol% absolute ethanol and secondary water ultrasonic cleaning, and the treated electrode is dried at room temperatu...

Embodiment 1

[0043] Polish the bare glassy carbon electrode (d=3mm) on metallographic sandpaper, and use 3μm, 0.5μm, and 0.03μm Al 2 O 3 The powder is polished to a mirror surface. Use 2mol / LNaOH, (1+1)HNO respectively 3 , 70% absolute ethanol and secondary water ultrasonic cleaning, and the treated electrode is dried at room temperature. Put the cleaned bare glass carbon electrode, counter electrode (1cm×1cm platinum electrode) and reference electrode (saturated calomel electrode) into 0.5mol / LH 2 SO 4 Carry out cyclic scanning in the range of -1.2~+1.6V until the voltammogram is stable, activate the electrode, and the scanning rate is 100mV / s. Then, put the three electrodes into the 6.0×10 -3 mol / L3:2 cysteamine zinc solution in 0.1mol / L potassium chloride solution, in the potential range of -1.2~+1.6V, 50mV / s cyclic scanning 30 times, to prepare CS-Zn / GCE modified electrode .

[0044] Characterization example:

[0045] The 3:2 zinc cysteamine / GCE modified electrode was prepared by cyclic ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a modified electrode and the application of the determination of free copper ions in feed additive copper lysine. The preparation method includes steps: 1) surface-treating the bare glassy carbon electrode; 2) preparing the electrode obtained in the previous step 1. Place the counter electrode and reference electrode in sulfuric acid solution for cyclic scanning until the voltammogram is stable, then activate the electrodes; 3) Place the three electrodes in the solution containing cysteine ​​chelated metal, and perform cyclic scanning to obtain the final Modified electrodes. Also disclosed is the application of the modified electrode in the detection of copper ion and lysine copper chelation rate. The preparation method of the invention is simple, and the prepared modified electrode is used for detection of copper ions and copper lysine chelation rate, has high accuracy, simple detection method, and does not need to use expensive instruments.

Description

Technical field [0001] The invention relates to a preparation method of a modified electrode and a measurement application of free copper ions in copper lysine as a feed additive. Background technique [0002] Trace element amino acid chelate is a recently developed third-generation trace element feed additive. Due to its good stability, strong anti-interference, and high biological potency, it has become a hot application in the feed industry. The level of trace element amino acid chelation rate is often used in the industry to reflect the quality of trace element amino acid chelate. The determination of chelation rate has important theoretical and practical significance for animal nutrition research, preparation of trace element amino acid chelate, livestock production, and market supervision. At present, the country has established standards for the determination of the chelation rate of methionine series trace element amino acid complexes (chelates), but there is no correspo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 舒绪刚周新华吴春丽吴信邱桂雄
Owner ZHONGKAI UNIV OF AGRI & ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com