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GBZ42358-2023: Iron ores - Wavelength dispersive X-ray fluorescence spectrometers - Determination of precision
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Iron ores - Wavelength dispersive X-ray fluorescence spectrometers - Determination of precision
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GB/Z 42358-2023
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Basic data | Standard ID | GB/Z 42358-2023 (GB/Z42358-2023) | | Description (Translated English) | Iron ores - Wavelength dispersive X-ray fluorescence spectrometers - Determination of precision | | Sector / Industry | National Standard | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 25,298 | | Date of Issue | 2023-03-17 | | Date of Implementation | 2023-10-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GBZ42358-2023: Iron ores - Wavelength dispersive X-ray fluorescence spectrometers - Determination of precision
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ICS73:060:10
CCSD31
National Standardization Guidance Technical Document of the People's Republic of China
Iron ore wavelength dispersive X-ray fluorescence spectrometer
Determination of accuracy
(ISO /T R18231:2016, MOD)
Released on 2023-03-17
2023-10-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
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:
This document is modified to adopt ISO /T R18231:2016 "Determination of Accuracy of Wavelength Dispersive X-ray Fluorescence Spectrometer for Iron Ore":
Compared with ISO /T R18231:2016, this document has made the following structural adjustments:
--- Added two chapters of "Normative References" and "Terms and Definitions" (see Chapter 2 and Chapter 3):
The technical differences between this document and ISO /T R18231:2016 and their reasons are as follows:
---Incorporate the content about the instrument settings into the instrument conditions, and change from recommendation to requirement (see 6:4:1), in order to comply with GB/T 1:1-
2020 requirements and improved document applicability;
---Change the "note" about the conductivity test of the gas flow proportional counter to the clause (see 5:2:1) to meet the actual situation in our country and facilitate
easy to use;
---Change the "note" about the multi-channel spectrometer test to a clause (see 5:2:2:2) to meet the actual situation in our country and facilitate use;
---Change the "Note" on the change of air flow composition to a clause (see 5:3:1) to conform to the actual situation in our country and facilitate use;
--- Change "Note 1" and "Note 2" about sample placement and loading reproducibility test to clauses (see 6:8) to meet the actual situation in our country
and easy to use;
---Change the "note" about the possible error caused by the position of the sample cup to a clause (see 6:9) to meet the actual situation in our country and facilitate
use:
The following editorial changes have been made to this document:
--- Corrected the error in formula (A:3):
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 is proposed by China Iron and Steel Industry Association:
This document is under the jurisdiction of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317):
This document is drafted by: Guangzhou Customs Technology Center, Lihong Inspection Group Co:, Ltd:, Metallurgical Industry Information Standard Research Institute, Pangang Group
Mining Co:, Ltd:, Xiamen Xiaoxun New Energy Technology Co:, Ltd:, Baoshan Iron and Steel Co:, Ltd:, Ningbo Customs Technology Center, Zhoushan Customs Comprehensive
Joint Technical Service Center, Jinan Customs, Fangcheng Customs Comprehensive Technical Service Center:
The main drafters of this document: Xiao Qian, Zhou Luo, Zheng Jianguo, Peng Subiao, Song Wuyuan, Zhou Junlong, Xiao Dahui, Liu Yi, Zhu Rong, Chen Yunpeng,
Chen Hailan, Chen Peixian, Liu Wenkai, Ying Haisong, Tu Kabin, Wang Yingjie, Jiang Xinmin, Luo Minggui:
Introduction
It is very important to test the spectrometer to ensure that it actually provides the required accuracy: The purpose of this document is to give information that can be used in
Determine the test method of the error, and give the relevant correction procedures: These tests are not intended to determine whether the instrument is performing optimally, but
Determine if the instrument can provide the preselected accuracy:
Iron ore wavelength dispersive X-ray fluorescence spectrometer
Determination of accuracy
1 Scope
This document describes a set of test methods that can be applied to wavelength dispersive X-ray fluorescence spectrometers (hereinafter referred to as "spectrometers") to determine
Spectrometers are capable of precise analysis:
This document applies to the measurement of errors associated with the operation of certain parts of the spectrometer: These test methods are not designed to check spectrometer
Each part, only to check those parts that may present a common source of error:
Note: When there is no difference statement, it means that a test is applicable to both sequential and multi-channel spectrometers:
2 Normative references
This document has no normative references:
3 Terms and Definitions
This document does not have terms and definitions that need to be defined:
4 Test frequency
Not every batch of samples analyzed requires the relevant tests set out in this document: The frequency of testing will vary depending on the trial program involved: Table 1
The appropriate testing frequency for each test is listed: If specific issues are encountered, more frequent testing and remedial work may be required:
Table 1 Test frequency suitable for precision test
Frequency test items
per month
Resolution of a gas flow proportional counter
Resolution of Scintillation Counters and Closed Proportional Counters
Operating the Pulse Height Drift Corrector a
every half year
Conductivity of gas flow proportional counter
overall stability
Collimator reproducibility
Detector change reproducibility
Crystal change reproducibility
angle reproducibility
Per year
Turntable reproducibility
Comparison of Turntable Positions
Comparison of Sample Cups
Sample loading and unloading
a After replacing the detection gas, it is advisable to check the position of the pulse peak, because the difference in methane content in the gas can change the position of the original peak:
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