Identify the injury implements by SEM/EDX and ICP-AES
Identify the injury implements by SEM/EDX and ICP-AES
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通过 SEM/EDX 和 ICP-AES 识别损伤工具
DOI：
10.1016/j.forsciint.2006.03.008
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发表时间：
2007-02-14
影响因子：
2.2
通讯作者：
Ma, Zhihua
中科院分区：
文献类型：
--
作者：
Bai, Rufeng;Wan, Lihua;Ma, Zhihua
伤害工具是法庭上最重要的物证之一，法医侦查人员经常面临着对伤害工具的甄别和推断问题。在实际情况中使用的通常方法是从形态学的角度。在金属器具等致伤器具的法医学鉴别中，期望元素的分析和比较能够提供优异的结果，并且需要同时进行多元素分析以分析多种元素。采用扫描电子显微镜/能谱仪（SEM/EDX）和电感耦合等离子体原子发射光谱（ICP-AES）对金属致伤器具进行鉴别和推断。用能谱仪对5个分别用铜锌或铬镍涂层厨具和碳钢厨具造成的家猪皮肤创伤中的金属微粒进行了检测。采用ICP-AES法对碳钢厨房用具的背部和刀片各5个样品进行元素含量和种类的分析。在涂层工具造成的伤口中，发现了仅含Cu、Zn或Cr、Ni的特殊颗粒，在碳钢厨具造成的伤口中，发现了含Fe、Cr、Si或Fe的特殊颗粒。不锈钢刀具中Cr、Mn、Si、Cu、Mo等元素含量差异显著，其它刀具中Mn、Si等元素含量与5号刀具刀片差异显著，Mn、Si、Mo、Ti、S、P、Ni的相对标准偏差（R.S.D.s）差异显著。用EDX检测伤口中的微粒可以推断金属致伤器具的种类，用ICP-AES还可以推断同一种类中的不同器具。(c)2006爱思唯尔爱尔兰有限公司保留所有权利。
The forensic investigator is frequently confronted with the discrimination and deduction of injury implements, which is one of the most important physical testimonies in courts. The usual method used in actual cases is from points of morphology. In the forensic discrimination of injury implements, such as metal implements, the analysis and comparison of elements are expected to provide excellent results, and simultaneous multi-elemental analysis is required to analyze various kinds of elements. This study was designed to establish discrimination and deduction of metal injury implements by scanning electron microscope/energy disperse X-ray microanalyzer (SEM/EDX) and inductively coupled plasma atomic emission spectrometry (ICP-AES). Examined metal particles in five wounds made on the skin of domestic pigs, respectively, using Cu-Zn or Cr-Ni coated and carbon steel kitchen implements by EDX. For carbon steel kitchen implements, analyzed five samples from the back and blade separately in the contents and varieties of elements by ICP-AES. In the wounds by the coated implements, the special particles only containing Cu, Zn or Cr, Ni were found. In the wounds by carbon steel kitchen implements, the particles containing Fe, Cr, Si or Fe. Mn, Si were found. The differences of contents of elements between the back and blade was no significant except No. 5 for carbon steel kitchen implements, and the significant differences of elements exited in Cr, Mn, Si, Cu, Mo among the stainless kitchen knives, Mn, Si among the other kitchen implements and for the blade of No. 5 knife, relative standard deviations (R.S.D.s) were significantly different in Mn, Si, Mo, Ti, S, P, Ni. Using EDX to examine the particles in wounds can deduce the categories of metal injury implements, and we can still deduce the different implements in the same category by ICP-AES. (c) 2006 Elsevier Ireland Ltd. All rights reserved.