COMPARISON OF REFRACTIVE-INDEX, ENERGY DISPERSIVE-X-RAY FLUORESCENCE AND INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION-SPECTROMETRY FOR FORENSIC CHARACTERIZATION OF SHEET GLASS FRAGMENTS
COMPARISON OF REFRACTIVE-INDEX, ENERGY DISPERSIVE-X-RAY FLUORESCENCE AND INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION-SPECTROMETRY FOR FORENSIC CHARACTERIZATION OF SHEET GLASS FRAGMENTS
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DOI：
10.1039/ja9910600451
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发表时间：
1991-09-01
影响因子：
3.4
通讯作者：
REBBERT, PS
中科院分区：
文献类型：
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作者：
KOONS, RD;PETERS, CA;REBBERT, PS
碎片（在毫克大小范围内）从81钢化板玻璃，以评估源的歧视能力的折射率（RI）和元素组成，通过使用能量色散X射线荧光（EDXRF）和电感耦合等离子体原子发射光谱法（ICP-AES）。 用EDXRF测定了5种元素的X射线强度，精密度在1%~ 25%之间。 使用ICP-AES测定了9种元素的浓度，获得了小于1%至约10%的精密度。 这两种方法都提供了改进的歧视能力比RI测量单独。 EDXRF技术提供了快速、非破坏性的检测，并广泛应用于法医实验室。 ICP-AES法的优点是可提供有关元素浓度的定量数据，适用于更多的元素，并提高了区分度。
Fragments (in the milligram size range) from 81 tempered sheet glasses were used in order to evaluate the source discrimination capabilities of refractive indices (RI) and elemental composition, by using energy dispersive X-ray fluorescence (EDXRF) and inductively coupled plasma atomic emission spectrometry (ICP-AES). The X-ray intensities of five elements were determined by EDXRF with precisions of between 1 and 25%. The concentrations of nine elements were determined using ICP-AES and precisions of from less than 1 to about 10% were obtained. Both methods offer improved discrimination capability over RI measurements alone. The technique of EDXRF provides rapid, non-destructive testing and is widely available in forensic laboratories. The ICP-AES method offers the advantages of providing quantitative data on the concentration of elements, applicability to a greater number of elements and improved discrimination.