| 扫描电镜/能谱法对92式手枪射击残留物检出率与遗留时间相关性的研究 |
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| 引用本文： | 徐晓玲,任贺,吴巧雯,王婷婷,左芷津.扫描电镜/能谱法对92式手枪射击残留物检出率与遗留时间相关性的研究[J].刑事技术,2010(2):31-34. |
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| 作者姓名： | 徐晓玲 任贺 吴巧雯 王婷婷 左芷津 |
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| 作者单位： | 北京人民警察学院,北京,102202 |
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| 摘 要： | 目的研究92式手枪射击残留物检出率与遗留时间的相关性,为射击时间的推断提供依据。方法实验人员使用92式手枪分别射击1枪和3枪,射击后分别在0.5h内,24h,48h,72h,120h,168h,对实验人员的手部及衣袖袖口处进行射击残留物的提取,利用扫描电镜和能谱仪对射击残留物进行检验。结果射击人的手部和衣袖会附着大量的射击残留物,随着时间的推移,手部的残留物数量急剧减少,24h（射击1枪）、72h（射击3枪）后不能检测到枪击残留物。而衣袖处120h（射击1枪）、168h（射击3枪）内均可检测到射击残留物,且射击残留物的检出率与遗留时间呈负相关性。结论随着遗留时间的增加,衣袖处射击残留物检出率递减,对涉枪案件中射击时间的判断有一定的参考价值。
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| 关 键 词： | 射击残留物 检出率 遗留时间 扫描电镜 能谱仪 |
Study on the relation of the gunshot residues picks out rate and carry-over time of 92 pistol by SEM/EDS |
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| XU Xiao-ling,REN He,WU Qiao-wen,et al..Study on the relation of the gunshot residues picks out rate and carry-over time of 92 pistol by SEM/EDS[J].Forensic Science and Technology,2010(2):31-34. |
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| Authors: | XU Xiao-ling REN He WU Qiao-wen |
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| Institution: | XU Xiao-ling,REN He,WU Qiao-wen,et al.(Beijing People\'s Police College,Beijing 102202,China) |
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| Abstract: | Objective To study the relation of the gunshot residues picks out rate and carry-over time of 92 pistol.Method Experimenters shot one time and three times with 92-pistol.After shooting 0.5h、24h,48h,72h,120h,168h,the gunshot residues on the hand and cuff of experimenter were collected and were investigated by SEM/EDS.Results There was a negative correlation between the gunshot residues picks out rate of cuff and carry-over time.Conclusion These results may be very useful to estimate the firing time in the gunshot cases. |
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| Keywords: | gunshot residues picks out rate carry-over time Scanning Electron Microscope(SEM) Energy Dispersive of X-ray System(EDS) |
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