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GB/T 36533-2018: Determination of the chemical state of micro-iron in silicate -- Auger electron spectroscopy
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Determination of the chemical state of micro-iron in silicate -- Auger electron spectroscopy
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GB/T 36533-2018
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Basic data | Standard ID | GB/T 36533-2018 (GB/T36533-2018) | | Description (Translated English) | Determination of the chemical state of micro-iron in silicate -- Auger electron spectroscopy | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G04 | | Classification of International Standard | 71.040.40 | | Word Count Estimation | 15,142 | | Date of Issue | 2018-07-13 | | Date of Implementation | 2019-06-01 | | Regulation (derived from) | National Standard Announcement No. 10 of 2018 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 36533-2018: Determination of the chemical state of micro-iron in silicate -- Auger electron spectroscopy
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Determination of the chemical state of micro-iron in silicate--Auger electron spectroscopy
ICS 71.040.40
G04
National Standards of People's Republic of China
Determination of Chemical State of Microparticle Iron in Silicate
Auger electron spectroscopy
Published on.2018-07-13
2019-06-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle of the method 1
5 Sample Preparation 1
5.1 Sample Charge Effect Control 1
5.2 Sample ultrathin section 2
5.3 Sample Installation 2
6 Analysis step 3
6.1 Energy Label Correction 3
6.2 Acquisition Standard Map 3
7 Expression of analysis results 6
7.1 full spectrum 6
7.2 narrow spectrum 7
7.3 Identification of chemical states of iron elements 7
7.4 Content calculation 8
7.5 Reporting measurement results 8
Appendix A (informative) Determination of the chemical state of elemental nano-iron in silicates 9
Appendix B (informative) Different chemical states of iron in silicates 10
Reference 11
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed and managed by the National Microbeam Standardization Technical Committee (SAC/TC38).
This standard is drafted by. Tsinghua University, Institute of Geochemistry, Chinese Academy of Sciences.
The main drafters of this standard. Yao Wenqing, Wu Yuxue, Yang Liping, Li Xiongyao, Xu Tongguang, Li Zhanping, Wang Yajun, Ouyang Ziyuan, Zhu Yongfa.
Determination of Chemical State of Microparticle Iron in Silicate
Auger electron spectroscopy
1 Scope
This standard specifies the Auger electron spectroscopy method for the identification of microparticulate iron in silicate and its content measurement.
This standard applies to the measurement of microparticle iron above 30nm.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 22461-2008 Surface chemical analysis vocabulary
GB/T 26533-2011 General rules for Auger electron spectroscopy
GB/T 29731-2013 Surface chemical analysis High-resolution Auger electron spectrometer element and chemical state analysis with energy calibration
GB/T 30702-2014 Surface chemical analysis Auger electron spectroscopy and X-ray photoelectron spectroscopy experimental determination of relative sensitivity
Guidelines for the use of degree factors in the quantitative analysis of homogeneous materials
GB/T 30815-2014 Surface chemical analysis analysis sample preparation and installation method guide
GB/T 32565-2016 Surface chemical analysis Auger electron spectroscopy (AES) data recording and reporting requirements
GB/T 32998-2016 Surface chemical analysis Auger electron energy spectrum charge control and calibration method report specification requirements
3 Terms and definitions
The terms and definitions defined in GB/T 22461-2008 apply to this document.
4 Principle of the method
The basic principle of Auger electron spectroscopy is based on the definition of Chapter 4 of GB/T 26533-2011.
5 sample preparation
5.1 Sample charge effect control
Preparation of silicate samples containing elemental iron fine particles, using an ultra-thin slicer or a focused ion thinning system
The cross section of the fine particles was obtained by slicing, and then analyzed by Auger electron spectroscopy. Try to make the sample and sample stage good when installing the sample.
Electrical contact. Minimize the charge of the insulator silicate fine particles according to the requirements of A.3 of GB/T 32998-2016, and
Calculate the charging effect according to the Chinese formula (A.1) of GB/T 32998-2016. The approximate value of the surface potential Ue is given by equation (1).
Ue≈ρZJP(1-δ) (1)
In the formula.
ρ --- the resistivity of the sample;
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