正常成年男子肝脏中元素含量的中子活化分析

在我国4个不同膳食类型地区河北、山西、江西和四川，采集21例正常成年男子尸体（意外死亡）的肝脏样品，用中子活化分析方法测定了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铁、锌、铜、锰、钼、硒、铬、钴，且个体差异大；某些元素的含量地区差异明显，山西样品的Co含量、四川样品的Cr含量和河北样品的Fe含量分别是其它3个地区的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，铬含量明显偏高，铁、铜和钼含量也稍高。作为质量控制，还对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。

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

21 autopsy liver samples were collected from normal adult men died accidentally in 4 areas with different dietary types of Hebei, Shanxi, Jiangxi and Sichuan in China, and the contents of 8 trace elements essential to human body, including Co, Cr, Cu, Fe, Mn, Mo, Se and Zn, were determined with neutron activation analysis. The experimental results showed that the contents of 8 elements in various individuals were significantly different in the same sequence of Fe>Zn>Cu>Mn>Mo>Se>Cr>Co. The regional differences of some elements were significant, Co content in Shanxi, Cr in Sichuan, and Fe in Hebei were 1.7~2.0, 2.5~5.2, and 1.5~2.4 times, respectively, as much as those in the other areas. Cr content was significantly higher than the newly estimated value of ICRP reference man, and Fe, Cu and Mo were also slightly higher. Three kinds of certified standard materials were analyzed for quality control, and the analytical results of 8 elements conformed to the certified values.