核分析技术研究一种水系沉积物的多元素取样行为

Study on Sampling Behavior of Multielements for a Stream Sediment Matrix Material With Nuclear Analytical Techniques

为给研制适用于固体取样微分析质控的天然基体标准物质提供可能的途径，利用3种核分析技术（INAA、PIXE和SRXRF）对自行研制的一种水系沉积物在取样量跨越9个量级（10-1～10-10 g）水平进行多元素取样行为研究。实验结果表明，该基体在不同取样量下，一批元素具有满意的取样不确定度。

For making an effort to explore procedure for development of CRMs for quali-ty control of solid sampling microanalysis , sampling behavior of multielements for a home-made stream sediment matrix material was studied by using three nuclear analyti-cal techniques （INAA ,PIXE and SRXRF ） for sample with size covering 9 orders of magnitude （ranging from 10-1 g to 10-10 g） .It is founded that a series of elements have satisfied sampling behavior on different sampling levels .