头发的同步辐射XRF实验

Synchrotron radiation XRF analysis of human hair

给出了用同步辐射Ｘ射线荧光分析法测定人发中微量元素含量沿头发长度方向分布的结果。重复扫描单根头发、五根头发的结果表明实验的精密度很好；一个人头部同一区域三根不同头发相应部位大多数元素含量的变化趋势基本相同，并有大体一致的相对比值；四个不同人头发相应部位元素含量的变化趋势是不同的，且有不同的相对比值。

he trace elements distribution along scalp hair is measured by SR excited XRF. The results of repeat scanning of a single hair and a strand of five hairs from the same person show that precision of the experiments is very well. The content change tendecies of most elements for 3 different hairs taken from the same area of one person are basically the same and a similar concentration gradient is presented. But the tendencies for different person's hair are quite different.