Quality assurance and quality control of neutron activation analysis for determination of elements in lunar soil samples returned by Chang'E-5 mission

被引：0

作者：

Jin X. ^{[1
]}

Xiao C. ^{[1
]}

Yao Y. ^{[1
]}

Zhang J. ^{[1
]}

Wu P. ^{[1
]}

Wang P. ^{[1
]}

Ni B. ^{[1
]}

机构：

[1] China Institute of Atomic Energy, Beijing

来源：

He Jishu/Nuclear Techniques | 2022年 / 45卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Lunar soil samples; Neutron activation analysis; Quality assurance; Quality control;

D O I：

10.11889/j.0253-3219.2022.hjs.45.030201

中图分类号：

学科分类号：

摘要：

Background: Determination of the elements in lunar soil samples returned by Chang'E 5- mission is of great significance for exploring the origin of lunar soil and the physical and chemical conditions for its formation, and for studying the evolutionary history of the moon. Neutron activation analysis (NAA) has the inherent advantages of non-destructiveness, high sensitivity, and the ability to analyze multiple elements. The NAA Laboratory of China Institute of Atomic Energy (CIAE) is responsible for the quantitative analysis of elements in the lunar soil samples returned by Chang'E-5 mission. Purpose: This study aims at the quality assurance and the control of NAA for the determination of element content of lunar soil samples to ensure the accuracy and reliability of the analysis results. Methods: Based on the principle of neutron activation analysis and sources of error, the quality assurance measures taken by NAA laboratory in sample preparation, selection of analysis protocols, γ-ray spectrometer performance control, measurement, spectrum analysis, calibration were discussed. The results of NAA were evaluated and verified by internal quality control samples with known property values (and uncertainties) and the consistent in different characteristics γ rays of the same radionuclide. The analysis results of each element to be measured were compared with relative method and single comparator k0 method to achieve the purpose of internal quality control. Results: The analysis results of internal quality control samples meet the laboratory's acceptance criteria. Internal quality control methods such as repeated tests, etc., verify the consistency of the element measurement results. Conclusions: By analyzing the measurement data, the reliability of the test results is verified, and the quality assurance process and quality control method are proved to be effective. © 2022, Science Press. All right reserved.

引用

共 12 条

[1] Wanke H, Kruse H, Palme H, Et al., Instrumental neutron activation analysis of lunar samples and the identification of primary matter in the Lunar Highlands, Journal of Radioanalytical Chemistry, 38, 1-2, pp. 363-378, (1977)
[2] Jerome D Y, Philippot J C, Brichet E., Determination of 29 elements in Luna 16 soil by non-destructive activation analysis, Earth and Planetary Science Letters, 13, 2, pp. 436-440, (1972)
[3] XIAO Caijin, NI Bangfa, TIAN Weizhi, Et al., Multielemental analyzing of a standard reference material NIST1577c by neutron activation analysis, Journal of Isotopes, 22, 3, pp. 169-171, (2009)
[4] Greenberg R R, Bode P, de Nadai Fernandes E A., Neutron activation analysis: a primary method of measurement, Spectrochimica Acta Part B: Atomic Spectroscopy, 66, 3-4, pp. 193-241, (2011)
[5] Zhao L, Xu X, Lu J B, Et al., Study on element detection and its correction in iron ore concentrate based on a prompt gamma-neutron activation analysis system, Nuclear Science and Techniques, 30, 4, (2019)
[6] SUN Yongjun, TIAN Weizhi, XIAO Jiazhu, Et al., Neutron activation analysis of an Apollo-17 lunar mare basalt sample, Nuclear Techniques, 5, 4, pp. 33-36, (1982)
[7] YAO Yonggang, XIAO Caijin, WANG Pingsheng, Et al., Instrumental neutron activation analysis for lunar samples returned by Chang'E-5, Journal of Isotopes, 35, 1, pp. 70-74, (2022)
[8] Li C L, Hu H, Yang M F, Et al., Characteristics of the lunar samples returned by the Chang'E-5 mission, National Science Review, 9, 2, pp. 1-13, (2022)
[9] Yun W X, Xiao C J, Yao Y G, Et al., Efficiency calibration of electro-mechanical cooler for HPGe detector in a wide energy range, Nuclear Science and Techniques, 42, 2, (2019)
[10] Li J T, Su X D, Zhang G L, Et al., Energy calibration of HPGe detector using the high-energy characteristic γ rays in 13C formed in 6Li +12C reaction, Nuclear Science and Techniques, 31, 5, (2020)

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