基于扫描电镜/X-射线能谱和电感耦合等离子体质谱的无机射击残留物测定及方法比较  

Inorganic gunshot residues determination and method comparison based on scanning electron microscope/energy dispersive X-ray spectroscopy and inductively coupled plasma mass spectrometry

作　　者：李兴[1] 时秋娜[2] 杨丽娟[1] 赵晓哲[1] 马怡阳 王培钦 张丽敏[1] LI Xing;SHI Qiuna;YANG Lijuan;ZHAO Xiaozhe;MA Yiyang;WANG Peiqin;ZHANG Limin(Hebei Public Security Police Vocational College,Shijiazhuang 050091,China;Henan Police College,Zhengzhou 450046,China)

机构地区：[1]河北公安警察职业学院,石家庄050091 [2]河南警察学院,郑州450046

出　　处：《分析试验室》2025年第1期42-46,共5页Chinese Journal of Analysis Laboratory

基　　金：河北省教育厅高等学校科学技术研究项目(ZC2023156)资助。

摘　　要：采用扫描电镜/X-射线能谱(SEM/EDS)和电感耦合等离子体质谱(ICP-MS)测定77式手枪的无机射击残留物(IGSR),并对结果进行比较分析。结果表明:SEM/EDS在IGSR颗粒显微成像以及定性方面可以对ICP-MS结果进行验证,但IGSR颗粒载体和计数规则对SEM/EDS结果有较大影响;ICP-MS不易受IGSR颗粒载体的成分影响且定量准确可靠,是SEM/EDS方法的有益补充,可用于IGSR的现场分布规律研究;SEM/EDS和ICP-MS结合,可提高分析效率和结果的可靠性,有利于IGSR检验数据的合理解释。Two instrumentation techniques including scanning electron microscope/energy dispersive X-ray spectroscopy(SEM/EDS)and inductively coupled plasma mass spectrometry(ICP-MS)were used for the identification and detection of inorganic gunshot residue(IGSR)resulted from the discharge of Type 77 pistols.The IGSR testing results were furtherly compared and analyzed.The results indicated that SEM/EDS can verify the microscopic imaging and characterization results of the IGSR particles generated by ICP-MS.Nevertheless,IGSR particle carriers and counting rules would have great impacts on the SEM/EDS output.As opposed to SEM/EDS,ICP-MS was less likely impacted by the composition of IGSR particle carriers and was able to provide relatively accurate and reliable quantification.Hence,ICP-MS could be a useful supplement to SEM/EDS in IGSR testing,and could be applied to the onsite inspection of GSR distribution pattern.Therefore,a combination of SEM/EDS and ICP-MS techniques in IGSR testing could help improve the efficiency and reliability of subsequent data analysis,facilitating a reasonable and rational interpretation of the IGSR testing results.

关 键 词：扫描电镜/X-射线能谱 电感耦合等离子体质谱 无机射击残留物 方法比较 

分 类 号：O657.31[理学—分析化学] X832[理学—化学]