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GB/T 16145-2022: Gamma-ray spectrometry method for the determination of radionuclides in environmental and biological samples
Status: Valid GB/T 16145: Evolution and historical versions
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Gamma-ray spectrometry method for the determination of radionuclides in environmental and biological samples
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Gamma spectrometry method of analysing radionuclides in biological samples
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Gamma spectrometry method of analysing radionuclides in biological samples
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Basic data | Standard ID | GB/T 16145-2022 (GB/T16145-2022) | | Description (Translated English) | Gamma-ray spectrometry method for the determination of radionuclides in environmental and biological samples | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C57 | | Classification of International Standard | 13.280 | | Word Count Estimation | 46,418 | | Date of Issue | 2022-12-30 | | Date of Implementation | 2023-07-01 | | Older Standard (superseded by this standard) | GB/T 16145-2020, GB/T 16140-2018, GB/T 11743-2013 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 16145-2022: Gamma-ray spectrometry method for the determination of radionuclides in environmental and biological samples
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ICS 13.280
CCSC57
National Standards of People's Republic of China
Replacing GB/T 16145-2020, GB/T 16140-2018, etc.
Radionuclides in environmental and biological samples
Gamma Spectroscopy Method
Posted on 2022-12-30
2023-07-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Summary of method 2
5 Measurement system 2
6 Energy Scale 3
7 Efficiency Scale 4
8 Sample preparation and measurement 5
9 Gamma Spectroscopy 7
10 Uncertainty assessment 8
11 Results report 8
Appendix A (Informative) Monoenergetic and Polyenergetic Nuclides for Energy and Efficiency Calibration 10
Appendix B (informative) Example of a typical sample box for measuring low activity samples 11
Appendix C (Informative) Sample self-absorption correction method 13
Appendix D (Informative) Coincidence additive correction caused by cascading radiation 17
Appendix E (informative) Soil, sediment (sediment) sample collection, preparation and measurement 20
Appendix F (informative) Water sample collection, preparation and measurement 23
Appendix G (Informative) Collection, Preparation and Measurement of Biological Samples 26
Appendix H (Informative) Air Sample Collection, Preparation and Measurement 29
Appendix I (Informative) Dry-to-fresh ratio, gray-to-fresh ratio and critical temperature range for ignition during ashing of biological samples32
Appendix J (Informative) Possible Interfering Nuclides and Gamma Rays Existing in Sample Gamma Spectroscopy Analysis Method 34
Appendix K (Informative) Examples of Uncertainty Evaluation Methods in γ-ray Spectroscopy 37
Appendix L (informative) Detection limit 40
Reference 41
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 replaces GB/T 16145-2020 "Methods for the Analysis of Radionuclides in Biological Samples by Gamma Spectroscopy", GB/T 16140-2018
"Gamma Spectrum Analysis Method of Radionuclide in Water", GB/T 11743-2013 "Gamma Spectrum Analysis Method of Radionuclide in Soil". Book
The document is mainly based on GB/T 16145-2020, integrating the contents of GB/T 16140-2018 and GB/T 11743-2013.and
Compared with GB/T 16145-2020, except for structural adjustment and editorial changes, the main technical changes are as follows.
--- Increased the terms and definitions of "environmental samples" (see Chapter 3).
The following editorial changes have been made to this document.
---Change the name of the standard to "Gamma Spectroscopy Analysis Method for Radionuclides in Environmental and Biological Samples";
--- Added "soil, sediment (sediment) sample collection, preparation and measurement" (see Appendix E);
--- Added "water sample collection, preparation and measurement" (see Appendix F);
--- Added "air sample collection, preparation and measurement" (see Appendix H).
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 Health Commission of the People's Republic of China.
This document was drafted by. Institute of Radiation Protection and Nuclear Safety Medicine, Chinese Center for Disease Control and Prevention, Institute of Radiation Medicine, Shandong Academy of Medical Sciences
Research Institute, Guangdong Provincial Institute of Occupational Disease Prevention, Jiangsu Provincial Center for Disease Control and Prevention, Shenzhen Institute of Occupational Disease Prevention and Control, Zhejiang Provincial Center for Disease Control and Prevention
center.
The main drafters of this document. Tuofei, Yang Baolu, Xu Jiaang, Zhang Qing, Zhang Jing, Zhou Qiang, Lin Yongqin, Li Zeshu, Liu Yanbing, Yang Xiaoyong,
Xuan Zhiqiang.
The previous versions of the documents replaced by this document are as follows.
---GB/T 16140, first released in.1995, first revised in.2018;
---GB/T 16145, first released in.1995, first revised in 2020;
---GB/T 11743, first published in 1989, first revised in.2013.
Radionuclides in environmental and biological samples
Gamma Spectroscopy Method
1 Scope
This document specifies the method for analyzing the activity concentration of gamma radionuclides in environmental and biological samples by high-purity germanium (HPGe) gamma spectrometer.
This document is applicable to the measurement of gamma radionuclide activity concentration in environmental and biological samples, similar to the measurement of gamma radionuclide activity in matrix samples.
The measurement of concentration is carried out according to the reference.
2 Normative references
This document has no normative references.
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
environmental sample environmental sample
The basic link of the environmental system, the basic unit of the environmental structure.
Note. The environmental samples referred to in this document include water, air, soil, rocks, etc.
3.2
biological sample biological sample
Representative biological substances collected according to the requirements of bioradiation detection and used as test samples.
Note. The biological samples referred to in this document include food crops, fruits and vegetables, tea, grass, milk, mushrooms, livestock, poultry, indicative wild animals and plants and other terrestrial animals and plants
Fish, shrimp, crab, algae and other aquatic organisms in sea or fresh water, as well as human and animal hair, tissue, blood and excrement, etc.
3.3
energy calibration energycalibration
The process of determining the corresponding relationship between the gamma ray energy of the gamma spectrometer system and the track site.
3.4
For a given measurement condition and gamma-ray energy, the net counts within the detected full-energy peak are comparable to those emitted by the radiation source during the same time interval.
The ratio of the total number of gamma photons of this energy.
3.5
Under the given measurement conditions, establish the relationship curve between γ-ray energy and its all-energy peak efficiency, or determine some specific nuclide calibration coefficients.
3.6
radioactive aerosol radioactive aerosol
Dispersion system formed by solid or liquid radioactive particles suspended in air or gaseous medium.
3.7
Detection limit detection limit; DL
The lowest activity that can be detected by a spectrometer at a given confidence level.
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