GB/Z 129-2026 Active National standards

GB/Z 129-2026 Surface chemical analysis—Electron spectroscopies—Measurement of the thickness and composition of nanoparticle coatings

Publish Date: 2026-01-28 Implement Date: 1970-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/Z 129-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods

ICS Name: Chemical analysis

Publish Date: 2026-01-28

Implement Date: 1970-01-01

Pages: 52 pages

Scope

This document describes the methods used to determine the thickness and chemical composition of the coating layer of "core-shell" nanoparticles (including some variants and non-ideal forms) using electron spectroscopy techniques. It clarifies the assumptions, challenges, and uncertainties of each method. This document also describes the procedures and issues of using electron spectroscopy for routine analysis of nanoparticle samples, particularly their importance in measuring the thickness of the coating layer.
This document focuses on the use of electron spectroscopy techniques, particularly X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), and methods based on synchrotron radiation. These methods cannot provide all the information needed for accurate analysis. Therefore, this document outlines some additional analysis methods that, to some extent, help interpret the electron spectroscopy data.