The investigation of an ancient Chinese ceramic served to further develop and validate fundamental parameter-based quantitation procedures in reference-free x-ray fluorescence (XRF) analysis. The XRF measurements of this sample were performed at the four-crystal monochromator beamline of the Physikalisch-Technische Bundesanstalt (PTB) at the BESSY II synchrotron radiation facility employing different excitation energies. The parallel processing of the XRF spectra recorded at different excitation energies provides a means to simultaneously evaluate relevant fundamental parameters and secondary enhancement processes such as those induced by photoelectrons. Employing well-characterized and absolutely calibrated instrumentation, all experimental parameters involved in XRF are known for small relative uncertainties allowing for a completely reference-free quantitation. Apart from traces of rare earth elements, the analytical results of the Chinese ceramic achieved by reference-free XRF are in line with target values given within a proficiency test of the International Atomic Energy Agency (IAEA) involving atomic and nuclear methods. Copyright (C) 2008 John Wiley & Sons, Ltd.
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机译:对中国古代陶瓷的研究有助于进一步开发和验证无参考X射线荧光(XRF)分析中基于基本参数的定量程序。该样品的XRF测量是在BESSY II同步加速器辐射设施的Physikalisch-Technische Bundesanstalt(PTB)的四晶体单色仪光束线上使用不同的激发能量进行的。在不同激发能量下记录的XRF光谱的并行处理提供了一种方法,可以同时评估相关的基本参数和二次增强过程,例如由光电子诱导的那些。利用性能良好且经过绝对校准的仪器,XRF涉及的所有实验参数均具有较小的相对不确定性,从而可以实现完全无参考的定量。除痕量稀土元素外,通过无参考XRF测得的中国陶瓷的分析结果与国际原子能机构(IAEA)进行的涉及原子和核方法的能力测试中给出的目标值一致。版权所有(C)2008 John Wiley&Sons,Ltd.
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