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GB/T 30738-2014 English PDF

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GB/T 30738-2014: Determination of radionuclide in marine sediment -- Gamma spectrometry
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Basic data

Standard ID GB/T 30738-2014 (GB/T30738-2014)
Description (Translated English) Determination of radionuclide in marine sediment -- Gamma spectrometry
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Z17
Classification of International Standard 07.060; 13.060
Word Count Estimation 17,178
Date of Issue 6/9/2014
Date of Implementation 10/1/2014
Quoted Standard GB/T 12763.8-2007; GB/T 16145-1995; GB 17378.3-2007
Regulation (derived from) National Standards Bulletin No. 11 of 2014
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 use of high-purity germanium [HPGe] �� spectrometer marine sediments natural or artificial �� conventional method of measuring radionuclide activity. This Standard applies to the determination of activity above the laboratory det

GB/T 30738-2014: Determination of radionuclide in marine sediment -- Gamma spectrometry

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Determination of radionuclide in marine sediment. Gamma spectrometry ICS 07.060; 13.060 Z17 National Standards of People's Republic of China Determination of radionuclides in marine sediments γ spectrometry Issued on. 2014-06-09 2014-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Summary of Method 2 Preparation 5 standard calibration source 2 6 Equipment 2 7 Sampling and sample preparation 3 8 assay procedure 4 Quality assurance and control 9 8 8 10 test reports The detection efficiency curve equation in Appendix A (normative) different geometrical height of the sample 10 Appendix B (Informative Appendix) γ Spectrometry detection limit of 11 Annex C (informative) Determination of radionuclides in marine sediments record sheet format 12 References 13

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the National Standardization Technical Commission for Oceanography (SAC/TC283) centralized. This standard was drafted. South China Sea Environmental Monitoring Center, State Oceanic Administration, State Oceanic Administration, Third Institute of Oceanography. The main drafters of this standard. Li Dongmei, doors Wu, Zhou Peng, Cai Syria, Chen Jiahui, Zhao Li, Wang Hua, Tianxiu Lei, Liang Qian Lin, Zheng far, the forest ends, Huang Chuguang, Wujin Xiao Fang HTC, Wu Lingling, Zhang standard, home inspection Zhen. Determination of radionuclides in marine sediments γ spectrometry Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This standard specifies the use of high-purity germanium [HPGe] γ spectrometer measured in marine sediment natural or artificial radionuclide γ activity routine method. This standard applies to the determination of the laboratory activity above the detection limit, and each nuclide γ characteristic lines can distinguish open marine sediments sample.

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 12763.8-2007 oceanographic survey - Part 8. Marine Geology Geophysical Survey GB/T 16145-1995 biological sample γ spectrum analysis of radionuclides GB 17378.3-2007 marine monitoring Part 3. Sample collection, storage and transportation

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Background background In the γ spectrum, in addition to the sample count, other factors, such as cosmic rays, radioactive contamination, electromagnetic interference generated in the spectrum count. 3.2 Background count rate backgroundcountrate In the γ spectrum in addition to the radioactive sample, other factors count rate. [GB 11743-1989, the definition 2.3] 3.3 Detection efficiency detectionefficiency Under certain conditions detected, and the number of particles measured in the same time interval within the radiation source to the total number of species on the particle detector Ratio. [GB 11743-1989, the definition 2.5] 3.4 Detection limit lowlimitofdetection At a given confidence level spectrometer can detect the lowest activity.

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