利用SEM/EDX进行锤类致伤工具认定的研究
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摘要
目的：利用扫描电镜/x射线能谱仪(SEM/EDX)对锤子打击猪皮和滤纸遗留颗粒进行元素成分分析,探讨：1、锤类工具打击遗留颗粒特征的稳定性；2、不同锤子打击遗留颗粒特征的区别；3、锤子打击滤纸和猪皮遗留颗粒的特征是否一致。为锤类致伤工具的认定建立新的方法。并用该方法对市场常见的20把锤子进行检验,以探讨本法对锤类工具的推断认定能力。方法：用INCA软件Point&ID微区分析功能对1号和3号钢锤锉下的金属渣分别进行检验。每个钢锤检验20个点,对检测结果进行处理分析。用INCA软件Feature and GSR颗粒检验功能对1号和3号钢锤打击滤纸和猪皮所得样品进行检验,每把钢锤打击滤纸和猪皮各9组。检测结果用Microsoft Office Excel2003和SPSS13.0进行处理和分析。用INCA软件Feature and GSR颗粒检验功能对20把锤子打击滤纸所提取样品进行检验,每把锤子提取一个样品。结果：1、通过对1号钢锤分别打击滤纸和猪皮的数据进行分析,9组数据无明显差别,可以认为同一把锤子多次打击遗留颗粒的成分特征是稳定的。2、1号和3号钢锤在锉下金属渣、打击滤纸遗留颗粒、打击猪皮遗留颗粒三类样品的分析结果比较中,均显示出明显的差异性。3、钢锤打击皮肤与打击滤纸所遗留金属颗粒的特征无差异。4、对市售20把锤子打击遗留颗粒进行检验,本方法可以将其分为6个种类,但做不到进一步的区分。结论：1、成分类型不同的锤子在打击物体时遗留的颗粒也不同,遗留颗粒的成分特征与打击使用锤子的成分特征一致,通过对遗留颗粒的检验可以对成分类型不同的锤子做出推断认定。2、锤子打击滤纸和打击猪皮所遗留颗粒的特征是相同的,可以通过对打击滤纸遗留颗粒的检验来反映打击皮肤遗留颗粒的特征。3、目前本方法只能对锤子进行种类认定,尚不能做出个体认定。
Objective:The component of legacy particles which from hacking of hammers on filter paper and skin of a pig is analyzed by SEM/EDX. Anew method of estimation and identification of the instrument causing the trauma is created through discussing three problems.1. How about the stability of legacy particles from hacking of hammers.2. Is there a difference in the legacy particles from different hammers?3. Whether the legacy particles from hacking of hammers on filter paper are same as from skin of a pig or not. Twenty hammers were analyzed through this method, to discuss the capability of the method to estimation and identification of the instrument causing the trauma.Methods:Metal grain from hammer No.1and No.3is analyzed by program Point&ID. Twenty points in each sample. Then the results are analyzed.Samples are created through two hammers (No.1and No.3) hacking filter paper and skin of a pig,9groups in each hacking. Then the samples are analyzed by program Feature and GSR. The results are analyzed by Microsoft Office Excel2003and SPSS13.0.Twenty samples are created through twenty different hammers hacking filter paper. Then the samples are analyzed by program Feature and GSR.Results:1.To analyze the results by hammer No.1hacking filter paper and skin of a pig. There is no difference in nine groups of data. It can infer that features of legacy particles by one hammer hacking several times are stable.2. There are differences between the results of metal grain, legacy particles by hacking on filter paper and legacy particles by hacking on skin of a pig from hammers No.1and No.3.3. There is no difference between the legacy particles by hacking of a hammer on filter paper and skin of a pig.4. This method can divided twenty hammers into six groups by analyzing the legacy particles. But it can't be identified more subtle.Conclusions:1.The legacy particles is different when the particles from different hammers. The features of legacy particles is same as the hammer which be used to hack. It can be identified of different hammers through analyzing legacy particles from hacking of hammers.2. There is no difference between legacy particles from hacking of hammers on filter paper and skin of a pig. The features of legacy particles from hacking on filter paper can reflect the features of legacy particles from hacking on the human body. 3. This method can classify hammers into groups. But hammers can't be individual identified through this method.
Objective:The component of legacy particles which from hacking of hammers on filter paper and skin of a pig is analyzed by SEM/EDX. Anew method of estimation and identification of the instrument causing the trauma is created through discussing three problems.1. How about the stability of legacy particles from hacking of hammers.2. Is there a difference in the legacy particles from different hammers?3. Whether the legacy particles from hacking of hammers on filter paper are same as from skin of a pig or not. Twenty hammers were analyzed through this method, to discuss the capability of the method to estimation and identification of the instrument causing the trauma.Methods:Metal grain from hammer No.1and No.3is analyzed by program Point&ID. Twenty points in each sample. Then the results are analyzed.Samples are created through two hammers (No.1and No.3) hacking filter paper and skin of a pig,9groups in each hacking. Then the samples are analyzed by program Feature and GSR. The results are analyzed by Microsoft Office Excel2003and SPSS13.0.Twenty samples are created through twenty different hammers hacking filter paper. Then the samples are analyzed by program Feature and GSR.Results:1.To analyze the results by hammer No.1hacking filter paper and skin of a pig. There is no difference in nine groups of data. It can infer that features of legacy particles by one hammer hacking several times are stable.2. There are differences between the results of metal grain, legacy particles by hacking on filter paper and legacy particles by hacking on skin of a pig from hammers No.1and No.3.3. There is no difference between the legacy particles by hacking of a hammer on filter paper and skin of a pig.4. This method can divided twenty hammers into six groups by analyzing the legacy particles. But it can't be identified more subtle.Conclusions:1.The legacy particles is different when the particles from different hammers. The features of legacy particles is same as the hammer which be used to hack. It can be identified of different hammers through analyzing legacy particles from hacking of hammers.2. There is no difference between legacy particles from hacking of hammers on filter paper and skin of a pig. The features of legacy particles from hacking on filter paper can reflect the features of legacy particles from hacking on the human body. 3. This method can classify hammers into groups. But hammers can't be individual identified through this method.
引文
[1]赵子琴,廖志钢,王英元,等.法医病理学.第4版[M]北京：人民卫生出版社,2009：90-116.[2]百茹峰,万立华,李剑波.机械性损伤的致伤物推断[J].中国法医学杂志,2005,20(1)：34-37.[3] MacCrehan WA, Patierno ER, Duewer DL, et al. Investigating the effect of changing ammunition on the composition of organic additives in gunshot residue (GSR)[J]. J Forensic Sci,2001,46(1):57-62.[4] Coumbaros J, Kirkbride KP, Kobus H, et al. Distribution of lead and barium in gunshot residue particles derived from0.22caliber rimfire ammunition [J]. J Forensic Sci,2001,46(6):1352-1357.[5]徐晓玲,贾春悦,从者唐等.92式手枪射击距离与射击残留物分布密度相关性的研究[J1.刑事技术,2009,(3)：6-9[6] Mal'tsev AE. Detection and assessment of microparticles in the area of periosteum damage from blunt trauma[J].Sud Med Ekspert,2001,44(6):21-24.[7] Bajanowski T, Huttenbrink KB, Brinkmann B. Detection of foreign particles in traumatized skin[J].Int J Legal Med,1991,104(3):161-166.[8]百如峰,万立华,张忠等.应用SME/EDX和ICP-AES检测元素成份判定致伤工具[J].中国法医学杂志,2005,20(6)：338-341.[9] John V. Goodpaster, Amanda B. Sturdevant, Kristen L. Andrews F, et al. Identification and Comparison of Electrical Tapes Using Instrumental and Statistical Techniques:I. Microscopic Surface Texture and Elemental Composition [J]. J Forensic Sci,2007,52(3):610-629.[10]陈世朴.金属电子显微分析[M].北京：机械工业出版社,1992.[11] Rawson RB, Starich GH, Rawson RD. Scanning electron microscopy analysis of skin resolution as an aid in identifying traumain forensic investigations [J].J Forensic Sci,2000,45(5):1023-1027.[12]郭素枝.扫描电镜技术及其应用[M].厦门大学出版社.2006第l版[13] Meng HH, Caddy B. Gunshot residue analysis[J]. J forensic sci,1997,42(4):552-569.[14]张素新,翁泽婷,肖少泉,王立云.能谱仪定量分析含碳钢铁样品的准确性研究[会议论文].2010-2010年全国电子显微学会议暨第八届海峡两岸电子显微学研讨会.[15]汪安璞,杨淑兰,沙因.北京大气气溶胶单个颗粒的化学表征[J].环境化学,1996,15(6)：488-495.[16]林孔勇.橡胶工业手册.第2版[M].北京：化学工业出版社,1993.[17]董树屏,刘涛等.用扫描电镜技术识别广州市大气颗粒物主要种类[J].岩矿测试,2001,20(31：202-207.[18]郑南.北京西北城区大气可吸入颗粒物的矿物学研究：[博士学位论文].北京：北京大学,2009.[19]张学磊,邬光剑,岳雅慧等.拉萨市夏季大气降尘单颗粒矿物组成及其形貌特征lJl.岩石矿物学杂志,2011,30(1)：127-134.[20]GB13473-2008,钢锤通用技术条件[S].[21]冯捷,张红文等.炼钢基础知识[M].北京：冶金工业出版社,2005.[22]GB-T5806-2003,钢锉通用技术条件[S].[1]赵子琴,廖志钢,王英元,等.法医病理学.第4版[M].北京：人民卫生出版社,2009：90-116.[2]百茹峰,万立华,李剑波.机械性损伤的致伤物推断[J].中国法医学杂志,2005,20(1)：34-37.[3] Lynn KS, Fairgrieve SI. Macroscopic analysis of axe and hatchet trauma in fleshed and defleshed mammalian long bones [J]. J Forensic Sci,2009,54(4):786-792.[4] Lynn KS, Fairgrieve SI. Microscopic indicators of axe and hatchet trauma in fleshed and defleshed mammalian long bones [J]. J Forensic Sci,2009,54(4):793-797.[5] Vipul Namdeorao Ambade, Hemant Vasant Godbole. Comparison of wound patterns in homicide by sharp and blunt force[J]. Forensic Sci Int,2006,156:166-170.[6] Rawson RB, Starich GH, Rawson RD. Scanning electron microscopy analysis of skin resolution as an aid in identifying traumain forensic investigations [J].J Forensic Sci,2000,45(5):1023-1027.[7] Celia Kremer, Stephanie Racette, Charles-Antoine Dionne, Anny Sauvageau. Discrimination of Falls and Blows in BluntHead Trauma:Systematic Study of the Hat Brim Line Rule in Relation to Skull Fractures[J].J Forensic Sci,2008,53(3):716-719.[8] Stephanie E. Calce, Tracy L. Rogers. Taphonomic Changes to Blunt Force Trauma:A Preliminary Study[J].JForensic Sci,2007,52(3):519-527.[9]陈旺根,汪枫.146例体表损伤类型与致伤物分析[J].法医学杂志,2009,25(2)：127-129.[10]陈世朴.金属电子显微分析[M].北京：机械工业出版社,1992.[11]郭素枝.扫描电镜技术及其应用[M].厦门大学出版社.2006第1版[12]李先强.扫描电镜／能谱仪检验微量金属3例[J].刑事技术,2003,增刊：40[13] MacCrehan WA, Patierno ER, Duewer DL, et al. Investigating the effect of changing ammunition on the composition of organic additives in gunshot residue (GSR)[J]. J Forensic Sci,2001,46(1):57-62.[14] Coumbaros J, Kirkbride KP, Kobus H, et al. Distribution of lead and barium in gunshot residue particles derived from0.22caliber rimfire ammunition [J]. J Forensic Sci,2001,46(6):1352-1357.[15]徐晓玲,贾春悦,从者唐等.92式手枪射击距离与射击残留物分布密度相关性的研究[J1.刑事技术,2009,(3)：6-9[16] John V. Goodpaster, Amanda B. Sturdevant, Kristen L. Andrews F, et al. Identification and Comparison of Electrical Tapes Using Instrumental and Statistical Techniques:I. Microscopic Surface Texture and Elemental Composition [J]. J Forensic Sci,2007,52(3):610-629.[17] Thompson TJ, Inglis J. Differentiation of serrated and non-serrated blades from stab marks in bone [J]. Int J Legal Med,2009,123(2):129-135.[18] Bajanowski T, Kohler H, Schmidt PF, et al. The cloven hoof in legal medicine[J]. Int J Legal Med,2001,114(6):346-348.[19]百如峰,万立华,张忠等.应用SME／EDX和ICP-AES检测元素成分判定致伤工具[J].中国法医学杂志,2005,20(6)：338-341.120]夏彬彬,郭洪玲,杨瑞琴等.应用SPSS软件处理微量物证实验数据[J].中国人民公安大学学报,2009,61(3)：36-40.