KeywordsXi' an Laboratory of Loess and Quaternary Geology
liquid scintillation methods
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CitationZhou, W., Head, M. J., & Kaihola, L. (1994). Small sample dating in China. Radiocarbon, 36(1), 47-49.
AbstractThe Xi'an Laboratory of Loess and Quaternary Geology has developed a small sample 14C dating facility consisting of a Wallac 1220 Quantulus(TM) liquid scintillation spectrometer, and a miniature benzene synthesis line based on the synthesis procedures used at the Australian National University (ANT). This line can produce ca. 0.3-ml benzene samples, which are then measured for 14C activity using 0.3-ml Teflon vials developed by Wallac Oy. The counting performance of the Quantulus(TM) spectrometer using 0.3-ml vials has been evaluated, and a potential age limit of ca. 45,000 BP has been obtained for samples containing up to 250 mg carbon. This dating facility fills the gap between large sample (2.4-6 g carbon) and microsample (<1 mg carbon) handling to form a 14C dating method sequence.