年龄样品采自北京周口店猿人洞堆积地层。采样层位是12、10、8—9、7、6、1—3层。样品种类包括各种动物牙齿、鹿角、犀牛骨化石、碳酸盐等。样品经过薄片观察、铀和钍含量及其同位素检查,认为基本是封闭系统,样品中钍没有迁移。因此,选用Th~(230)/U~(234)法进行年龄研究。铀系法研究年龄主要实验流程为:样品铀和钍化学分离纯化、电沉积法制备α放射源及铀和钍同 Age samples taken from Beijing Zhoukoudian ape cave accumulation layer. Sampling horizon is 12,10,8-9,7,6,1-3 layer. Sample types include all kinds of animal teeth, antlers, rhinoceros fossils, carbonates and so on. Samples were observed through flakes, uranium and thorium content and isotope inspection, that the basic closed system, the sample did not migrate thorium. Therefore, the Th ~ (230) / U ~ (234) method was selected for age study. The main experimental process of uranium-based research age is: chemical separation and purification of uranium and thorium in samples, preparation of α-radioactive sources by electrodeposition and uranium and thorium