法医学杂志 ›› 2015, Vol. 31 ›› Issue (2): 126-128.DOI: 10.3969/j.issn.1004-5619.2015.02.012

• 技术与应用 • 上一篇    下一篇

铁铬合金菜刀遗留金属颗粒的成分评价方法

甘增禄1,马东烈2,赵春梅2,刘  力2   

  1. (1. 山西医科大学法医学院,山西 太原 030001; 2. 北京市公安局法医检验鉴定中心,北京 100192)
  • 发布日期:2015-04-25 出版日期:2015-04-28
  • 通讯作者: 赵春梅,女,理化检验高级工程师,主要从事扫描电镜应用、法医病理学,微量物证及痕迹检验研究;E-mail:zcm 1304@sohu.com
  • 作者简介:甘增禄(1988—),男,青海西宁人,硕士研究生,主要从事法医病理学研究;E-mail:562300543@qq.com
  • 基金资助:

    “十二五”国家科技支撑计划项目(2012BAK02B02-4)

Composition Analysis of Remaining Metal Particles on Ferrochrome Kitchen Knife

GAN ZENG-LU1, MA DONG-LIE2, ZHAO CHUN-MEI2, LIU LI2   

  1. (1. School of Forensic Medicine, Shanxi Medical University, Taiyuan 030001, China; 2. Forensic Medical Examination Center of Beijing Public Security Bureau, Beijing 100192, China)
  • Online:2015-04-25 Published:2015-04-28

摘要: 目的 检测铁铬合金菜刀遗留的金属颗粒成分,并建立可行的评价指标及方法。 方法 使用滤纸擦蹭菜刀制作金属遗留微小颗粒样本,应用扫描电镜-X射线能谱仪(scanning electron microscopy and energy dispersive X-ray spectrometer,SEM-EDX)的GSR颗粒分析功能检测遗留金属颗粒成分,计算遗留金属颗粒中铁、铬相对含量比。 结果 铁铬合金菜刀遗留金属颗粒内所含铁、铬相对含量比,在大部分菜刀间差异有统计学意义(P<0.05)。 结论 使用GSR颗粒分析功能量化检测铁铬合金菜刀遗留金属颗粒内铁、铬相对含量比,为此类致伤工具的认定建立可行的评价方法。

关键词: 法医病理学, 金属, 铁铬合金, 扫描电镜-X射线能谱仪

Abstract: Objective To establish a feasible evaluation index and method to identify composition of remaining metal particles on ferrochrome kitchen knife. Methods The small samples of remaining metal particles were rubbed from the knives using filter paper. The composition of remaining metal particles was detected by scanning electron microscopy and energy dispersive X-ray spectrometer (SEM-EDX) and GSR particle analysis function, using mathematical methods to calculate the ratio (relative amount) of Fe and Cr in remaining metal particles. Results The ratio (relative amount) of Fe and Cr of remaining metal particles had significant differences among most ferrochrome kitchen knives (P<0.05). Conclusion Using GSR particle analysis function to quantitatively detect the ratio (relative amount) of Fe and Cr of remaining metal particles on ferrochrome kitchen knife, which can establish the feasible evaluation method to estimate such injury tool.

Key words: forensic pathology, metals, chromium alloys, scanning electron microscope and energy dispersive X-ray spectrometer

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