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GB/T 42518-2023: Bismuth germinate (BGO) crystal - Chemical analysis of trace elements - Glow discharge mass spectrometry
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Bismuth germinate (BGO) crystal - Chemical analysis of trace elements - Glow discharge mass spectrometry
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GB/T 42518-2023
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PDF similar to GB/T 42518-2023
Basic data | Standard ID | GB/T 42518-2023 (GB/T42518-2023) | | Description (Translated English) | Bismuth germinate (BGO) crystal - Chemical analysis of trace elements - Glow discharge mass spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G04 | | Classification of International Standard | 71.040.40 | | Word Count Estimation | 16,134 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42518-2023: Bismuth germinate (BGO) crystal - Chemical analysis of trace elements - Glow discharge mass spectrometry
---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 71:040:40
CCSG04
National Standards of People's Republic of China
Chemical Analysis of Trace Elements in Bismuth Germanate (BGO) Crystal
glow discharge mass spectrometry
Released on 2023-05-23
2023-09-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface I
Introduction II
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 2
5 Instruments and equipment 2
6 Reagents and Materials 2
7 sample 3
8 Instrument preparation 4
9 Measurement and Analysis Results Presentation 4
10 Detection limit7
11 Measurement results 8
12 Repeatability and reproducibility8
13 Test report 8
Appendix A (Informative) Mass calibration ions and their mass-to-charge ratios 9
Appendix B (Informative) Isotope Selection and Interference 10
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 and managed by the National Microbeam Analysis Standardization Technical Committee (SAC/TC38):
This document was drafted by: Shanghai Institute of Ceramics, Chinese Academy of Sciences, Ningbo New Material Testing and Evaluation Center Co:, Ltd:
The main drafters of this document: Zhuo Shangjun, Qian Rong, Zhu Yueqin, Sheng Cheng, Yang Qiu, Shi Xiaolu, Shen Shiyin:
Introduction
Bismuth germanate (BGO) crystal, whose molecular formula is Bi4Ge3O12, is an inorganic scintillation material with excellent comprehensive performance:
It has a wide range of applications in radiation detection fields such as energy physics, astrophysics, petroleum logging, environmental monitoring, public safety and industrial online detection:
BGO crystal is a high-purity material, and there are many factors that affect material properties (such as light transmission and light output, light response uniformity, afterglow, etc:)
Among them, the type and content of impurity elements are one of the key factors: For the measurement of a small amount of trace impurity elements, it is generally used to include inductance
coupled plasma mass spectrometry (ICP-MS): However, if it is necessary to analyze about 70 kinds of trace impurities in BGO crystals
High-resolution glow discharge mass spectrometry (GD-MS) is the preferred method for quantitative determination of the element:
GD-MS quantitative analysis requires the relative sensitivity factor (RSF) of the relevant analyte to be measured with a reference substance with a similar matrix, but the reference
Test materials are often difficult to obtain: Due to the special ionization process of GD-MS, the analysis results are less affected by the matrix, so in practical application
In practice a set of pre-determined RSFs is usually used for all the different matrices: However, when the measurement accuracy is required to be high, the
A certified reference material, or working reference material, of the BGO matrix is necessary:
Chemical Analysis of Trace Elements in Bismuth Germanate (BGO) Crystal
glow discharge mass spectrometry
1 Scope
This document describes a method for the measurement of impurity elements in bismuth germanate (BGO) crystals using glow discharge mass spectrometry (GD-MS):
This document is applicable to the determination of the content of impurity elements other than hydrogen and inert gas elements in BGO crystal materials: The measurement range
0:001μg/g~1000μg/g (mass fraction): Calibrated by a suitable standard sample, also suitable for measuring mass fractions greater than 1000
The content of impurity elements in μg/g:
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 6682 Analytical laboratory water specifications and test methods
3 Terms and Definitions
The following terms and definitions apply to this document:
3:1
ionic strength ion intensity
The total amount of ion flux recorded by the instrument for the specified element:
3:2
Needle sample pinsample
A rod-shaped sample with a length of about 20 mm, a cross-sectional size of about 3 mm, and a round or square cross-section:
3:3
flake sample flatsample
At least one side is flat and smooth, and the smooth side has a circular measuring surface of 20 mm ~ 40 mm: Round or square flake-shaped samples:
3:4
Needle-shaped battery pincel
Sample cell for analysis of needle-shaped samples:
3:5
Sheet battery flatcel
Sample cell for analysis of sheet samples:
3:6
The ratio of the number of ions detected by the detector to the number of ions entering the detector:
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