pXRF: a study of inter-instrument performance
pXRF: a study of inter-instrument performance
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DOI：
10.1016/j.jas.2011.10.014
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发表时间：
2012-04
影响因子：
2.8
通讯作者：
Nathan B. Goodale;D. G. Bailey;George T. Jones;C. Prescott;E. Scholz;Nick Stagliano;Chelsea Lewis
中科院分区：
文献类型：
--
作者：
Nathan B. Goodale;D. G. Bailey;George T. Jones;C. Prescott;E. Scholz;Nick Stagliano;Chelsea Lewis
将便携式X射线荧光（pXRF）仪器集成到考古调查中引起了人们的兴趣和怀疑，因为该技术的几个特征限制了分析的准确性和精度。本文旨在探讨仪器间的性能，以评估潜在的pXRF仪器在检查岩屑原材料的元素组成。奥林巴斯Innov-X系统公司生产的Delta和Omega两种pXRF仪器被用来获得大盆地五个细粒火山源和四个黑曜石源的微量元素特征。我们比较了两个便携式仪器的波长色散仪器广泛校准地质标准和商业台式能量色散系统。我们的研究结果表明，这些不同的仪器产生的数据之间的关系是复杂的，当我们展望pXRF在考古分析中的未来时，我们认为，同样严格的协议适用于基于实验室的XRF分析，包括仪器校准，仪器间性能的评估，以及与公认的地质标准的比较，需要在pXRF分析中应用。
Integrating portable X-ray fluorescence (pXRF) instrumentation into archaeological investigations has generated as much interest as skepticism because several characteristics of the technique limit analytical accuracy and precision. This paper seeks to explore inter-instrument performance in order to assess the potential pXRF instrumentation has in examining the elemental composition of lithic raw materials. Two pXRF instruments, Delta and Omega models both manufactured by Olympus Innov-X Systems, were utilized to obtain the trace element signatures of five fine-grained volcanic sources and four obsidian sources in the Great Basin. We compared the two portable instruments to a wavelength-dispersive instrument extensively calibrated with geologic standards and to a commercial benchtop energy-dispersive system. Our results suggest that the relationships between the data produced by these different instruments are complex, and as we look to the future of pXRF use in archaeological analysis we argue that that the same strict protocols applied in laboratory-based XRF analyses, involving instrument calibration, evaluation of inter-instrument performance, and comparison to accepted geologic standards, need to be applied in pXRF analysis.