放射性碳年代测定
加速器质谱
考古
木炭
背景(考古学)
地质学
环境科学
地理
材料科学
冶金
作者
Hui Cao,Zongli Wang,Jifeng He,Jiale Guo,A. J. T. Jull,Aifeng Zhou,Dong Guo,Fahu Chen
出处
期刊:Radiocarbon
[Cambridge University Press]
日期:2022-12-06
卷期号:65 (1): 41-50
被引量:7
摘要
ABSTRACT Since 2018, the radiocarbon laboratory of Lanzhou University has been equipped with a compact accelerator mass spectrometer—a 200-KV mini carbon dating system (MICADAS), together with an auto graphitization equipment (AGE III). The laboratory has for a long time prepared graphite targets for 14 C dating of plant fossils, charcoal, bones, and bulk organic matter. Herein, we give an overview of the operating status and performance of the dating facility. The long-term measurements of the standard and blank samples indicated that the results for MICADAS in Lanzhou University were accurate and stable and of high sensitivity. Fifteen sets of organic materials collected from archaeological sites in northwest China were selected for an inter-comparison study involving the participation of four specialist laboratories. The 14 C dating results for the homogenized archaeological samples from several of the laboratories showed a high degree of consensus. The long-term performance and inter-comparison data for MICADAS confirmed that the radiocarbon laboratory of Lanzhou University could provide stable and accurate 14 C dating results. In this context, the 14 C dating results for a number of key archaeological/environmental samples were validated.
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