GB/T 39630-2020 in English

VALID

Colloidal solution of silver nanoparticles

Issued on:2020-12-14
Implemented on:2021-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 39630-2020
Document status:	VALID
Title in English:	Colloidal solution of silver nanoparticles
Title in Chinese:	纳米银胶体溶液
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-12-14
Implemented on:	2021-07-01
ICS Classification:	71.100.01-Products of the chemical industry in general
Chinese Classification:	G60-Chemical reagent in general
Professional Classification:	GB-National Standard
Related Keywords:	elemental silver elemental silver ratio elemental silver refine silver nanoparticles introduction analysis elemental silver standard implementation recommendations application
Related Topics:	Nano silver Collagen Solution Preparation Acidic Collagen Solution gel solution Gold sol preparation collagenase liquid nano silver solution system collagenase solution Solution VOC voc solution voc solution liquid uv solution UV nano silver total silver Silver Nano UV Nanosol UV Ultraviolet light of nano-gold sol Nano gold carrier a nanometer Silver Nano+ solution in english exosome nano solution system Solution gas specific Nano x Exosome Nano Nano gold colloid UV Silver Nano Liquid and Solution Samples silver nanocluster liquids and solutions Preparation of Collagen Solution glue solution Collagen Solution Preparation Collagen Solution Preparation Silver Nano Silver Nano liquid-liquid dissolution Nano Aerosol Monitor Carrier gold nanoparticles Silver Nanocube miscibility Solution Collagen Content volume solution Silver Nanocluster nano exosomes t solution nano silver UV Silver glue nano carbon solution nanobody solution hole silver solution Silver Nanosheets GBT39630 GB/T 39630-2020 nano silver pacifier sol gel sicl4 Nanosilver Restrictions and Regulations nanopore group Silver Colloid Quote Nano silver powder

《GB/T 39630-2020纳米银胶体溶液》由TC279（全国纳米技术标准化技术委员会）归口，TC279SC1（全国纳米技术标准化技术委员会纳米材料分会）执行，主管部门为中国科学院。

Introduction

Analysis of the core content of the standard

GB/T39630-2020 has formulated comprehensive technical specifications for nanosilver colloidal solution, which mainly includes three technical systems:

Technical dimensions	Key indicators	Test methods
Physical and chemical properties	pH value (1-100), elemental silver ratio (≥50%), average particle size (≤10nm)	X-ray photoelectron spectroscopy (XPS), dynamic light scattering (DLS)
Safety performance	Lead (＜2mg/L), arsenic (＜1mg/L), acute oral toxicity (LD50＞5000mg/kg)	ICP-MS, animal experiments
Antibacterial efficacy	Escherichia coli/Staphylococcus aureus antibacterial rate (≥90%), stability (≥6 months)	HG/T4317 antibacterial test

In-depth interpretation of technical indicators

Particle size control requirements

The standard stipulates that the average particle size is ≤10nm, which is determined by small-angle X-ray scattering method.

1-5nm: has the highest specific surface area and active silver ion release rate
5-20nm: balance stability and antibacterial effect
＞50nm: may reduce bioavailability

Silver valence state analysis technology

When using XPS to analyze the proportion of elemental silver, please note:

Sample preparation needs to be vacuum dried to constant weight
The type and concentration of anions and cations need to be recorded
Ag3d_5/2 binding energy of 368.2eV is the characteristic peak of elemental silver

Standard implementation recommendations

Application in medical fields

When used in wound dressings, it is recommended to:

Select a solution with a particle size of 3-8nm and an absolute value of Zeta potential > 30mV
Control the total silver concentration at 10-50mg/L
Add antibacterial test for Pseudomonas aeruginosa