离子色谱法在乳化硝铵炸药同源性认定中的应用  

Application of Ion Chromatography in Homology Identification ofEmulsified Ammonium Nitrate Explosives

作　　者：王椰 徐扬 张艳 Wang Ye;Xu Yang;Zhang Yan(Experimental Center,Guizhou Police College,Guizhou Guiyang 550005,China;Bozhou Branch of Zunyi Public Security Bureau,Guizhou Zunyi 563100,China;Department of Investigation,Guizhou Police College,Guizhou Guiyang 550005,China)

机构地区：[1]贵州警察学院实验中心,贵州贵阳550005 [2]遵义市公安局播州分局,贵州遵义563100 [3]贵州警察学院侦查系,贵州贵阳550005

出　　处：《实验与分析》2023年第2期70-76,共7页LABOR PRAXIS

基　　金：贵州省教育厅特色领域项目(项目编号:黔教合KY字[2021]077)。

摘　　要：为解决实际办案中乳化硝铵炸药的同源性认定以及涉爆案件的串并案分析研判的难题,利用离子色谱法对三个厂家不同批次的乳化硝铵炸药进行检验研究,分析出不同厂家生产的乳化硝铵炸药在离子色谱中具有的特征点,即不同厂家生产的乳化硝铵炸药其Na+与NH4+的峰面积比值不同,且阴离子存在特征峰差异。同一厂家的不同批次样品中Na+与NH4+的峰面积比值相同,且实验结果的相对标准偏差均小于5%。用以往涉爆案件中经查明其炸药来源的乳化硝铵炸药样品,对研究结果进行验证,能准确追溯其生产厂家。因此,可以通过离子色谱中Na+与NH4+的峰面积比值以及阴离子特征峰差异对乳化炸药进行同源性认定,达到对涉案乳化硝铵炸药溯源的目的,为涉爆案件的侦查、民用炸药的管控、混合炸药的司法鉴定以及涉爆案件的串并等提供科学依据。In order to solve the problem of identifying the homology of emulsified ammonium nitrate explosives and analyzing and judging serial and parallel cases involving explosives in practical cases,ion chromatography was used to inspect and study different batches of emulsified ammonium nitrate explosives from three manufacturers.It was analyzed that emulsified ammonium nitrate explosives produced by different manufacturers have their own characteristic points in ion chromatography,that is,the peak area ratio of Na+to NH4+in emulsified ammonium nitrate explosives produced by different manufacturers is different,And there are differences in characteristic peaks of anions.The peak area ratio of Na+to NH4+in different batches of samples from the same manufacturer is the same,and the relative standard deviation of the experimental results is less than 5%.By using emulsified ammonium nitrate explosive samples that have been identified as the source of explosives in previous explosive cases,the research results can be verified and the manufacturer can be accurately traced.Therefore,homology identification of emulsion explosives can be achieved through the peak area ratio of Na+to NH4+in ion chromatography and the difference in anionic characteristic peaks,in order to trace the origin of the involved emulsion ammonium nitrate explosives.This provides scientific basis for the investigation of explosive cases,the control of civilian explosives,the legal identification of mixed explosives,and the concatenation of explosive cases.

关 键 词：乳化硝铵炸药 离子色谱法 同源性 

分 类 号：TQ560.7[化学工程—炸药化工]