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GB/T 28898-2012: Evaluation of uncertainty in chemical composition analysis for metallurgical materials
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Evaluation of uncertainty in chemical composition analysis for metallurgical materials
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GB/T 28898-2012
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Basic data | Standard ID | GB/T 28898-2012 (GB/T28898-2012) | | Description (Translated English) | Evaluation of uncertainty in chemical composition analysis for metallurgical materials | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H11 | | Classification of International Standard | 77.080.01 | | Word Count Estimation | 97,991 | | Quoted Standard | GB/T 12805; GB/T 12806; GB/T 12807; GB/T 12808; JJF 1059 | | Regulation (derived from) | National Standards Bulletin 2012 No. 28 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the chemical composition of Uncertainty in Measurement of universal norms and gravimetry, titration, spectrophotometry, atomic absorption spectroscopy, hydride generation - atomic fluorescence spectrometry, inductively coupled plas | GB/T 28898-2012: Evaluation of uncertainty in chemical composition analysis for metallurgical materials
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Evaluation of uncertainty in chemical composition analysis for metallurgical materials
ICS 77.080.01
H11
National Standards of People's Republic of China
Metallurgical analysis of chemical composition
Measurement Uncertainty
Issued on. 2012-11-05
2013-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅴ
1 Scope 1
2 Normative references 1
3 1 General Provisions
3.1 Analysis of common test uncertainty factor 1
The basic procedure 3.2 Measurement Uncertainty 2
3.3 Measurement Uncertainty Several issues should be noted that 7
3.4 Evaluation of analysis and testing of components in the main uncertainty 8
4 Weight Measurement Uncertainty Evaluation 13
4.1 Analysis and measurement parameters describe 13
4.2 mathematical model 13
14 4.3 Identification of uncertainty sources
Component 4.4 Uncertainty Evaluation 14
4.5 Evaluation of combined standard uncertainty of 14
4.6 Evaluation of expanded uncertainty of 15
4.7 Measurement results and the Expression of Uncertainty 15
5 Titration Measurement Uncertainty 15
5.1 Analysis and measurement parameters Description 15
5.2 mathematical model 15
5.3 identify sources of uncertainty 16
5.4 Evaluation of uncertainty components 16
5.5 Evaluation of combined standard uncertainty of 17
5.6 Evaluation of expanded uncertainty of 18
5.7 Results and Expression of Uncertainty 18
6 spectrophotometry Measurement Uncertainty 18
6.1 Analysis and measurement parameters describe 18
6.2 mathematical model 18
6.3 Identification of uncertainty sources 19
6.4 Evaluation of Uncertainty 19
6.5 Evaluation of combined standard uncertainty of 21
6.6 Evaluation of expanded uncertainty of 21
6.7 Measurement results and the Expression of Uncertainty 21
7 Atomic Absorption Spectrometry Measurement Uncertainty 22
7.1 Analysis and measurement parameters describe 22
7.2 mathematical model 22
22 7.3 Identification of uncertainty sources
Component 7.4 Uncertainty Evaluation 22
7.5 Evaluation of combined standard uncertainty of 25
7.6 Evaluation of expanded uncertainty of 25
7.7 Measurement results and the Expression of Uncertainty 25
8 Hydride Generation - Atomic Fluorescence Spectrometry Measurement Uncertainty 25
8.1 Analysis and measurement parameters describe 25
8.2 mathematical model 25
26 8.3 Identification of uncertainty sources
8.4 Evaluation of uncertainty components 26
8.5 Evaluation of combined standard uncertainty of 28
8.6 Evaluation of expanded uncertainty of 28
8.7 Measurement results and the Expression of Uncertainty 28
9 inductively coupled plasma atomic emission spectrometry Measurement Uncertainty 28
9.1 Analysis and measurement parameters Description 28
9.2 mathematical model 29
9.3 Identification of uncertainty sources 29
9.4 Evaluation of uncertainty components 29
9.5 Evaluation of combined standard uncertainty of 31
9.6 Evaluation of expanded uncertainty 31
9.7 Measurement results and the Expression of Uncertainty 31
10 spark discharge atomic emission spectrometry Measurement Uncertainty 32
10.1 Analysis and measurement parameters describe 32
10.2 mathematical model 32
Identification of uncertainty sources 10.3 32
10.4 Uncertainty components Evaluation 32
Evaluation of combined standard uncertainty of 10.5 34
10.6 Evaluation of expanded uncertainty 34
10.7 Expression of Uncertainty in Measurement results and 34
11 X-ray fluorescence spectrometry Measurement Uncertainty 34
11.1 Analysis and measurement parameters describe 34
11.2 mathematical model 34
Identification of uncertainty sources 11.3 34
11.4 Uncertainty components Evaluation 35
Evaluation of combined standard uncertainty of 11.5 36
11.6 Evaluation of expanded uncertainty 36
11.7 Expression of Uncertainty in Measurement results and 36
12 infrared absorption method and thermal conductivity measurement Uncertainty Evaluation 37
12.1 Analysis and measurement parameters describe 37
12.2 mathematical model 37
Identification of uncertainty sources 12.3 37
12.4 Uncertainty components Evaluation 37
Evaluation of combined standard uncertainty of 12.5 39
12.6 Evaluation of expanded uncertainty 39
12.7 Expression of Uncertainty in Measurement results and 39
Determination of carbon content of 13 gas volumetric method Measurement Uncertainty 40
13.1 Analysis and measurement parameters describe 40
13.2 mathematical model 40
Identification of uncertainty sources 13.3 40
13.4 Uncertainty components Evaluation 40
Evaluation of combined standard uncertainty of 13.5 41
13.6 Evaluation of expanded uncertainty 41
13.7 Expression of Uncertainty in Measurement results and 42
Determination of silicon content in iron ore by measurement uncertainty in Appendix A (normative) Measurement Uncertainty gravimetric method instance gravimetric method
Evaluation 43
Annex B (informative) Titration Measurement Uncertainty Example 46
Annex C (informative) Measurement Uncertainty spectrophotometry instance periodate spectrophotometric determination of low alloy steel
Manganese Measurement Uncertainty 55
Annex D (informative) Atomic Absorption Spectrometry Measurement Uncertainty instance aluminum atomic absorption spectrometry
Copper content Uncertainty Evaluation 59
Annex E (informative) by Hydride Generation - Atomic Fluorescence Spectrometry Measurement Uncertainty instance Hydride Generation - Atomic
Arsenic content in low alloy steel Measurement Uncertainty fluorescence spectrometry Evaluation 63
Annex F (informative) inductively coupled plasma atomic emission spectrometry Measurement Uncertainty Example 68
Annex G (informative) spark discharge atomic emission spectrometry Measurement Uncertainty instance spark discharge atomic emission
Determination of molybdenum content in low alloy steel Spectrometry Measurement Uncertainty Evaluation 74
Appendix H (Informative Appendix) X-ray fluorescence spectrometry Measurement Uncertainty Example 78
Annex I (informative) infrared absorption method and thermal conductivity method Measurement Uncertainty Example 84
Appendix J (informative) Determination of the carbon content of the gas volumetric method Measurement Uncertainty instance combustion gas volumetric method for the determination of steel
The carbon content of Uncertainty Evaluation 88
References 91
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Iron and Steel Association.
This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized.
This standard was drafted. Iron and Steel Research Institute, Wuhan Iron and Steel Group Corporation, Shanghai Research Institute of Materials, Shandong Metallurgical Research Institute, China
Academy of Sciences Institute of Metal Research, Angang Steel Company Limited Bayuquan steel branch.
The main drafters of this standard. Luoqian Hua, CAO Hong-yan, Ke Ruihua, Zhang Suizhong, Tanlin Qing, Li Shasha, Shen Ke, Zhu Yuejin, Wang Lihui,
ROCKETS, Cuiqiu Hong, Wen east, Yu Weihua.
Metallurgical analysis of chemical composition
Measurement Uncertainty
1 Scope
This standard specifies the chemical composition analysis Measurement Uncertainty universal norms and gravimetric method, titration, spectrophotometry, atomic
Absorption spectrometry, hydride generation - atomic fluorescence spectrometry, inductively coupled plasma atomic emission spectrometry, spark discharge atomic emission spectrometry
, X-ray fluorescence spectrometry, infrared absorption and thermal conductivity method, the determination of carbon content Uncertainty evaluation method of measuring gas volumetric method.
This standard applies to the metallurgical analysis of chemical composition of Measurement Uncertainty.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 12805 Laboratory glassware Burettes
GB/T 12806 Laboratory glassware single marking flask
GB/T 12807 Laboratory glassware indexing pipette
GB/T 12808 Laboratory glassware single marking pipette
JJF1059 Evaluation and Expression of Uncertainty in Measurement
3 General
3.1 Analysis of common test uncertainty factor
According to the chemical composition analysis of the characteristics of uncertainty factors that can be broadly summarized as follows.
a) is measured definitions, concepts and measurement conditions of incomplete or imperfect;
b) sampling and sample preparation, sample storage and uncertainty caused by the sample itself;
c) analytical balance test and measurement procedure used, weight, capacity vessels, micrometers, calipers and other measuring instruments inherent
Uncertainty caused by the error;
Changes introduced uncertainty d) measurement conditions;
e) certified reference material uncertainty value or purity standard substance;
f) measurement method, the measurement process brought about uncertainty;
g) changes its linear calibration curves, the measurement results of rounding introducing uncertainty;
h) the presence of an analog instrument readings human error;
i) digital instrument due to the introduction of the resolution of the indicating device indicates the deviation;
j) uncertainty constants, parameters, and other empirical coefficient references;
k) the measurement process of random factors and random factors and the interaction between the above factors, the performance under the same conditions,
Repeated measure changes in magnitude.
These factors generated uncertainty are not necessarily independent, it may be relevant. For example, item k may be the presence of a front
Correlation set. Under certain conditions, certain factors may be the main contributor to uncertainty, while others may contribute minimal, negligible.
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