中生代恐龙绝灭之谜,不仅是世人关注的焦点话题,也是众多古生物学、生物地球化学工作者潜心钻研的课题、特别是近十几年来,对上述问题的探讨,已从恐龙骨骼化石微量元素的分布、组合入手研究,并结合采用高精确度、灵敏度、无损珍贵恐龙化石的中子活化分析(NAA)方法进行,对此项研究更深入的进展这里暂且不论,仅就分析取样的基础性工作而言,笔者认为传统的不经任何分离而直接均匀取样 The mystery of the extinction of the Mesozoic dinosaurs is not only the focus of attention of the world, but also the subject of painstaking research by many paleontologists and biogeochemical workers. In particular, in the past decade or so, the discussion of these problems has been conducted from the dinosaur bones fossil trace elements , Combined with the study, combined with the use of high precision, sensitivity, non-destructive precious dinosaur fossil neutron activation analysis (NAA) method, the more in-depth progress of this study here for the time being, only on the basis of the analysis of sampling In terms of work, I believe that the traditional sampling without any separation directly and evenly