Al2O3样品制备技术及26Al的AMS测量

摘要

The chemical procedure for preparing Al2O3 sample used in AMS was reported. The fact that different ions are precipitated at different pH values was used to purify Al which was coverted to Al2O3 at high tempareture. A set of Al2O3 samples including standard and blank have been prepared. For the blank the ratio 26Al/27Al was measured to be 1.1×10-13. The result showed that the interference of 26Mg in sample was negligible and the chemical procedure of preparing Al2O3 samples were successful. The measurement procedure of 26Al by AMS was also reported.%报道了用于加速器质谱计26Al分析的Al2O3的制备流程及26Al的测量过程。制备的空白样品26Al/27Al比值<10-13，显示出同量异位素26Mg干扰小。制备流程是成功的。