Nondestructive discrimination of small glass fragments for forensic examination using high energy synchrotron radiation x‐ray fluorescence spectrometry
Nondestructive discrimination of small glass fragments for forensic examination using high energy synchrotron radiation x‐ray fluorescence spectrometry
复制标题
使用高能同步辐射 X 射线荧光光谱法无损辨别用于法医检查的小玻璃碎片
DOI：
10.1002/xrs.895
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发表时间：
2006
影响因子：
1.2
通讯作者：
I. Nakai
中科院分区：
文献类型：
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作者：
Y. Nishiwaki;Toshio Nakanishi;Y. Terada;T. Ninomiya;I. Nakai
本文表明，高能量SR-XRF（同步辐射X射线荧光光谱法）利用116 keV的X射线是一个强大的技术，用于无损鉴别小玻璃碎片。标准材料SRM 612的玻璃碎片的XRF光谱给出了包括稀土元素在内的34种元素的良好分辨的K线峰。在20 keV以上能区，对10个<1 mg的碎片进行分析，Ba归一化重元素强度比值的相对标准偏差（RSD）小于8.2%。使用元素强度比进行从26个图案玻璃片获得的玻璃碎片（<1 mg）的比较，所述元素强度比定义为检测到的元素的强度除以Ba的强度。玻璃碎片中含有Mo、Pd、Sb、Cs、Bi等微量元素，这些微量元素可作为鉴别玻璃样品的重要指标。Ce：Ba比率可以测量的所有样品的精度为1.9%，被认为是相当有效的参数，用于识别玻璃碎片，即使这些碎片将不包含其他特征重元素。本研究中的所有玻璃碎片，不能区分的基础上的折射率（RI）值可以区分这种方法。版权所有© 2006约翰威利父子有限公司。
This paper demonstrates that high-energy SR-XRF (synchrotron radiation x-ray fluorescence spectrometry) utilizing 116 keV x-rays is a powerful technique for nondestructive discrimination of small glass fragments. An XRF spectrum of glass fragments of a standard material SRM612 gave well-resolved K-line peaks of 34 elements, including the rare-earth elements. The relative standard deviations (RSD) of the ratios of the intensities of heavy elements normalized by that of Ba were less than 8.2% for the analyses of 10 fragments (<1 mg) in the energy region above 20 keV. A comparison of glass fragments (<1 mg) obtained from 26 figured glass sheet was performed using elemental intensity ratios that were defined as the intensities of detected elements divided by that of Ba. Analyses of glass fragments revealed the existence of Mo, Pd, Sb, Cs and Bi, and these trace elements could be useful as important indexes to discriminate glass samples. The Ce:Ba ratios could be measured for all the samples with precision of 1.9% and were found to be quite effective parameters for identification of glass fragments, even though these fragments would contain no other characteristic heavy elements. All glass fragments in this study that could not be distinguished on the basis of refractive index (RI) values could be discriminated by this method. Copyright © 2006 John Wiley & Sons, Ltd.
DOI：
10.1002/0470020431
发表时间：
2004-06
期刊：
--
影响因子：
--
作者：
K. Tsuji;J. Injuk;R. Grieken
通讯作者：
K. Tsuji;J. Injuk;R. Grieken