正常成年男子肝脏中元素含量的中子活化分析

Study of Elemental Contents in Liver of Normal Adult Men With Neutron Activation Analysis

采用中子活化分析方法测定了来自我国4个膳食类型地区（河北、山西、江西和四川）的21例意外死亡的正常成年男子尸体的肝脏样品中8种人体必需微量元素的含量。结果表明，肝脏中8种元素的含量由高到低依次为Fe、Zn、Cu、Mn、Mo、Se、Cr、Co，且个体差异大；某些元素含量的平均值显示了一定的地区差异，如山西样品的Co含量、四川样品的Cr含量和河北样品的Fe含量平均值分别是其它3个地区平均值的1．7～2．0倍、2．5～5．2倍和1．5～2．4倍；与国际辐射防护委员会（ICRP）参考人的最新估算值相比，Cr含量明显偏高，Fe、Cu和Mo含量也稍高。作为质量控制，对3种标准物质中8种元素的含量进行了测定，分析结果与标准值吻合。

Twenty one autopsy liver samples were collected from normal adult men died accidentally in 4 areas of Hebei, Shanxi, Jiangxi and Sichuan in China with different dietary types, and the contents of 8 trace elements essential to human , including Co, Cr, Cu, Fe, Mn, Mo, Se and Zn, were determined with neutron activation analysis. The experimental results showed that the contents for each of the 8 elements were significantly different for different individuals, however all of them in the same sequence of Fe〉Zn〉Cu〉Mn〉Mo〉 Se〉Cr〉Co. The regional differences in average values of some elements were indicated, for example, the average values of Co content in Shanxi, Cr content in Sichuan, and Fe content in Hebei were t. 7-2.0, 2.5-5.2, and 1.5-2.4 times of those in other areas, respectively. The Cr content were significantly higher than the newly estimated value of ICRP reference man, and Fe, Cu and Mo content were also slightly higher. Three kinds of certifled reference materials were analyzed for quality control, and the analytical results of the 8 elements were in good agreement with certified values within uncertainty limits.