In order ta calibrate ^14C specific activity of the Chinese Sugar Carbon Standard,NB,S Oxalic, ANU Sucrose and tree-ring growth (1847-1854) along with sugar carbonh,have been analyzed, and their specific activities ha...In order ta calibrate ^14C specific activity of the Chinese Sugar Carbon Standard,NB,S Oxalic, ANU Sucrose and tree-ring growth (1847-1854) along with sugar carbonh,have been analyzed, and their specific activities have also been compared. The ^13C/^12C ratio in each sample hns also be determined. The results are presented below:^14C in sugar earbon/^14C in the international standare=1.362±0.002,and the ^13C/^12C ratio in the sugar carbon with respect to PDB is ^13C=19.32±0.56‰。展开更多
文摘In order ta calibrate ^14C specific activity of the Chinese Sugar Carbon Standard,NB,S Oxalic, ANU Sucrose and tree-ring growth (1847-1854) along with sugar carbonh,have been analyzed, and their specific activities have also been compared. The ^13C/^12C ratio in each sample hns also be determined. The results are presented below:^14C in sugar earbon/^14C in the international standare=1.362±0.002,and the ^13C/^12C ratio in the sugar carbon with respect to PDB is ^13C=19.32±0.56‰。
