Instrumental Neutron Activation Analysis of Chang’E‑5 Lunar Regolith Samples

The Chang’E-5 (CE-5) lunar samples were analyzed nondestructively for more than 40 elements by instrumental neutron activation analysis (INAA) with a strict quality assurance and quality control. Based on the INAA results, some new observations and discoveries were made. Major, minor, and trace elem...

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Bibliographic Details
Published inJournal of the American Chemical Society Vol. 144; no. 12; pp. 5478 - 5484
Main Authors Yao, Yonggang, Xiao, Caijin, Wang, Pingsheng, Li, Chunlai, Zhou, Qin
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 30.03.2022
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Summary:The Chang’E-5 (CE-5) lunar samples were analyzed nondestructively for more than 40 elements by instrumental neutron activation analysis (INAA) with a strict quality assurance and quality control. Based on the INAA results, some new observations and discoveries were made. Major, minor, and trace elements in CE-5 are very different from those of the Earth and Apollo lunar samples. The rare earth element (REE) pattern indicated that the CE-5 lunar samples are mare basalts with a clear negative anomaly in Eu. Element correlations are a very interesting discovery; for example, the ratios of Ba/La and FeO/MnO in CE-5 are almost identical to those of the Apollo lunar samples. These observations and discoveries will enrich the understanding of the formation and evolution of the Moon.
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ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.1c13604