PERFORMANCE AND INTER-COMPARISON TESTS OF THE MICADAS AT THE RADIOCARBON LABORATORY OF LANZHOU UNIVERSITY, CHINA

Huihui Cao, Zongli Wang, Jianhua He, Jiale Guo, A. J.Timothy Jull, Aifeng Zhou, Guanghui Dong, Fahu Chen

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

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 14C 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 14C 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 14C dating results. In this context, the 14C dating results for a number of key archaeological/environmental samples were validated.

Original languageEnglish (US)
Pages (from-to)41-50
Number of pages10
JournalRadiocarbon
Volume65
Issue number1
DOIs
StatePublished - Feb 6 2023

Keywords

  • C dating
  • accelerator mass spectrometry
  • archaeology
  • inter-comparison study
  • running status

ASJC Scopus subject areas

  • Archaeology
  • General Earth and Planetary Sciences

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