HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

GB/T 42208-2022 English PDF

US$399.00 ยท In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42208-2022: Nanotechnologies - Measurement of nanoparticle size in multiphase system - Image method of transmission electron microscopy
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 42208-2022English399 Add to Cart 4 days [Need to translate] Nanotechnologies - Measurement of nanoparticle size in multiphase system - Image method of transmission electron microscopy Valid GB/T 42208-2022

PDF similar to GB/T 42208-2022


Standard similar to GB/T 42208-2022

GB/T 22062   GB/T 17360   GB/T 32387   GB/T 43883   GB/T 43748   

Basic data

Standard ID GB/T 42208-2022 (GB/T42208-2022)
Description (Translated English) Nanotechnologies - Measurement of nanoparticle size in multiphase system - Image method of transmission electron microscopy
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N33
Classification of International Standard 17.180.01
Word Count Estimation 19,187
Date of Issue 2022-12-30
Date of Implementation 2023-07-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 42208-2022: Nanotechnologies - Measurement of nanoparticle size in multiphase system - Image method of transmission electron microscopy


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 17.180.01 CCSN33 National Standards of People's Republic of China Nanoparticle Size Measurement in Multiphase Systems of Nanotechnology TEM imaging Posted on 2022-12-30 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Principle 2 4.1 Overview 2 4.2 Imaging principle of transmission electron microscope 2 4.3 Image processing 2 5 sample 2 5.1 Sample requirements 2 5.2 Sample preparation method 2 6 Test Step 3 6.1 General requirements 3 6.2 Sample loading 3 6.3 Instrument preparation 3 6.4 Image Acquisition 4 7 Particle size measurement 4 7.1 Overview 4 7.2 Image Analysis 4 7.3 Results representation 5 8 Measurement uncertainty5 9 Test report 5 Appendix A (Informative) Solid Metal Multiphase System Example 7 Appendix B (Informative) Nanocomposite Example 10 Reference 13

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document was proposed by the Chinese Academy of Sciences. This document is under the jurisdiction of the National Nanotechnology Standardization Technical Committee (SAC/TC279). This document was drafted by. National Nanoscience Center, National Standard (Beijing) Inspection and Certification Co., Ltd., Beijing Academy of Science and Technology Analysis Testing Institute (Beijing Physical and Chemical Analysis and Testing Center), Shenzhen Defang Nano Technology Co., Ltd., China Jiliang University, Beijing Powder technical association. The main drafters of this document. Chang Huaiqiu, Fu Xin, Qi Xiaoying, Li Ting, Du Zhiwei, Bai Lu, Han Xiaolei, Gao Yuan, Zheng Qiang, Sun Yan, Zhang Shuqin.

Introduction

Due to the surface effect, quantum size effect, volume effect and quantum tunneling effect of nanomaterials, the material exhibits properties that traditional solids do not have. Some chemical, electrical, magnetic, optical and other specific properties. At the same time, limited by the size, the occasions where nanomaterials are used alone are limited, and there are often In the material matrix, a multiphase system is formed to increase the overall material properties. Due to the small particle size, large specific surface area and large surface energy of nanoparticles, they are easy to agglomerate, which makes it difficult to characterize and evaluate them in multiphase systems. price. Transmission electron microscopy is a characterization device that uses electron beam imaging through thin film samples to reveal the internal morphology and structure of the sample. prepare. It can not only observe the microscopic shape of the sample, but also characterize the internal structure of the observed area. Therefore, the TEM matching diagram Image analysis techniques can be used to measure the particle size of nanoparticles in multiphase systems. The particle size measurement of nanoparticles in the multiphase system has a great role in optimizing the structure of materials and improving the performance of materials. It is of great significance to promote the application and development of nanomaterials. Nanoparticle Size Measurement in Multiphase Systems of Nanotechnology TEM imaging

1 Scope

This document describes the use of transmission electron microscopy image processing and analysis techniques for particle size measurement of nanoparticles dispersed in multiphase systems. Quantitative method. This document is applicable to particle size measurement and particle size distribution of nanoparticles in solid-phase multiphase systems. This document is also applicable to the size of nanoparticles in colloids and biological tissues when the sample preparation meets the requirements of transmission electron microscopy observation. Measurement.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 21649.1 Particle Size Analysis Image Analysis Method Part 1.Static Image Analysis Method GB/T 30544.4 Nanotechnology Terminology Part 4.Nanostructured Materials

3 Terms and Definitions

The following terms and definitions defined in GB/T 30544.4 apply to this document. 3.1 Nanoparticles nanoparticles Solid particles with a particle size ranging from 1nm to 100nm. [Source. GB/T 16418-2008, 2.1.6] 3.2 disperse The process of distributing nanoparticles in a heterogeneous system. 3.3 brightfield imaging; BF A transmission electron microscope technique for electron illumination and imaging in which the electron beam penetrates the sample, using an objective diaphragm located on the back focal plane and selected to Imaging with transmitted waves. [Source. GB/T 30543-2014, 3.3] 3.4 Darkfield like darkfieldimaging; DF A transmission electron microscope technique for electron illumination and imaging in which the electron beam penetrates the sample, using an objective diaphragm located on the back focal plane and selected to Imaging with diffracted waves. [Source. GB/T 30543-2014, 3.4]

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42208-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42208-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42208-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42208-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.