乳化炸药爆炸残留物分析  

Determination of Emulsion Explosive Residues

作　　者：樊俊丹[1] 王力春[1] 

机构地区：[1]重庆市公安局物证鉴定中心,重庆400021

出　　处：《刑事技术》2015年第3期246-248,共3页Forensic Science and Technology

摘　　要：目的探讨乳化炸药爆炸案件中导致爆炸残留物中铵根离子、硝酸根离子含量偏低的原因。方法通过实际爆炸案例分析,实地了解乳化炸药制造工艺,采用离子色谱法检验爆炸案件及爆炸实验提取的残留物中铵根离子和硝酸根离子成分含量。通过与空白样本对比,分析导致乳化炸药爆炸残留物中铵根离子、硝酸根离子含量降低的原因。结果经过生产工艺改进的乳化炸药爆炸后,其残留物中检出硝酸根和铵根离子的含量没有明显高于现场空白样本。结论通过考察分析、对比检验,发现生产工艺改进是导致乳化炸药爆炸残留物中铵根离子和硝酸根离子含量偏低的原因。针对这一问题,本文提出了一些相应的解决方案。ObjectiveTo explore the reasons why the contents of ammonium ion and nitrate ion in the explosion residue of emulsion explosive were lower than that of normal explosives.MethodsThe emulsion explosive residue samples were collected from a crime scene and an explosion experiment scene, respectively. The samples were analyzed by ion chromatography and the contents of ammonium ion and nitrate ion were quantitatively determined.ResultsThe contents of ammonium ion and nitrate ion in blank samples, case samples and experimental samples were in the same level.Conclusions According to the emulsion explosive formula, the content of ammonium nitrate in emulsion explosive normally is in the range of 78%~82% （typical content is 74.3%）. However, as advanced production technology and effective emulsiifer have been employed in production process, the mixture of ammonium nitrate and composite oil in emulsion explosive is more homogeneous, and then the oxidation-reduction reactions of emulsion explosives in explosion become more thoroughly. This results in the quite lower contents of ammonium ion and nitrate ion in the explosion residue of emulsion explosive, which is consistent with the results of the case and the veriifcation experiment described in this article.

关 键 词：乳化炸药 爆炸残留物 离子色谱 

分 类 号：DF794.3[政治法律—诉讼法学]