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Method for characterizing chemical state of silver element in silver-containing dressing

A silver dressing and element technology, applied in scientific instruments, analytical materials, material analysis using wave/particle radiation, etc. simple method effect

Inactive Publication Date: 2021-11-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the final results of instrument status, charge calibration, and data peak fitting processing can lead to a deviation of 0.5eV or more in the peak position of Ag element (close to the peak position deviation of silver in different chemical states), so it may cause Ag element chemical error judgment

Method used

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  • Method for characterizing chemical state of silver element in silver-containing dressing
  • Method for characterizing chemical state of silver element in silver-containing dressing
  • Method for characterizing chemical state of silver element in silver-containing dressing

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Embodiment

[0047] The method for characterizing the chemical state of the silver element in the silver-containing dressing of the present embodiment comprises the following steps:

[0048](1) XPS instrument status confirmation: According to the requirements of the national standard GB / T 22571-2017, the instrument is calibrated by using X-ray photoelectron spectrometer energy scale standard materials (Au, Ag, Cu foil) to ensure that the measured results conform to JJG (Education Commission) 013-1996 "Electronic Energy Spectrum Metrology Verification Regulations" has technical requirements for the measurement and calibration of XPS binding energy scales. Ensure that the difference between the measured result and the reference peak position is significantly less than 0.1eV, which is in line with the technical requirements for the measurement and calibration of the XPS binding energy scale in JJG (Education Committee) 013-1996 "Electronic Energy Spectrum Measurement and Verification Regulatio...

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Abstract

The invention discloses a method for characterizing the chemical state of a silver element in a silver-containing dressing, which comprises the following steps: confirming the state of an instrument, then confirming the reference peak position of silver in different chemical states, selecting an internal standard calibration method, and calibrating by adopting a metal chloride Cl2p (197.8 eV); and determining the valence state of Ag corresponding to the reference peak closer to the maximum binding energy position of Ag3d5 / 2 and Ag3d3 / 2 of the Ag element in the dressing as the valence state of the Ag element in the dressing. The method for characterizing the chemical state of the silver element in the silver-containing dressing can effectively confirm the chemical state of the Ag element in the silver-containing dressing, and has the advantages of being accurate in operation and high in precision.

Description

technical field [0001] The invention relates to a method for testing chemical states of elements, in particular to a method for characterizing chemical states of silver elements in silver-containing dressings. Background technique [0002] Because silver has a good antibacterial effect, silver-containing products are widely used in the fields of medical treatment, tableware and food preservation. Dressings are materials used to cover and protect wounds, and are very common antibacterial products in the medical field. Dressings often contain nano-silver and / or silver compounds in order to control the microbial environment of dressings and / or wounds and create favorable conditions for wound healing. However, the potential biosafety risks (such as special biological effects and potential toxicity risks) that may be caused by antibacterial dressings need scientific understanding and evaluation, and the form of silver in silver-containing dressings (elemental silver particles or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/2273
CPCG01N23/2273G01N2223/085
Inventor 范燕徐昕荣刘佳肖娟魏强石志锋曾嘉欣戴春艳李冰
Owner SOUTH CHINA UNIV OF TECH
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