The enriched stable isotope tracer technique combined with neutron activation analysis and differential centrifugation was utilized to investigate the subcellular distribution of rare earth elements sm and yb in rat liver Sm和, sup 168 yb作为示踪剂,结合差速离心分离和中子活化分析技术naa初步研究了稀土元素sm和yb在大鼠肝脏亚细胞组分中的分布。