基于电感耦合等离子体质谱(ICP-MS)法的射击残留物特征元素在射击者击发手上分布的研究  

Study on Distribution of Characteristic Elements in Shooting Residue on Shooter′s Firing Hand by Inductively Coupled Plasma Mass Spectrometry

作　　者：李想[1] 夏鑫鑫 宋辉[1] 朱昱[1] 赵鹏程[1] LI Xiang;XIA Xinxin;SONG Hui;ZHU Yu;ZHAO Pengcheng(Criminal Investigation Police University of China,Shenyang,Liaoning 110854,China)

机构地区：[1]中国刑事警察学院,沈阳110854

出　　处：《中国无机分析化学》2023年第2期171-176,共6页Chinese Journal of Inorganic Analytical Chemistry

基　　金：公安部技术研究计划资助项目(2019JSYJC24);公安部科技强警基础工作专项资助项目(2019GABJC06)。

摘　　要：为了考察射击者击发手上射击残留物特征元素的分布,利用超声提取法,提取射击残留物中的锡、锑、钡和铅。对提取溶剂浓度和超声时间进行考察。实验结果表明,采用10%HNO_(3)(v/v)提取30 min,提取射击残留物中锡、锑、钡和铅效果最好。对不同种类枪支射击后手部射击残留物的分布研究,结果发现虎口和手掌心处射击残留物较多,为涉枪案件的侦查和鉴定提供了一种方法。In order to investigate the distribution of characteristic elements in shooting residue on shooter′s firing hand,tin,antimony,barium and lead in shooting residue are extracted by ultrasonic extraction method.The concentration of extraction solvent and ultrasonic time are investigated.The experimental results showed that using 10%HNO_(3)(v/v)to extract shooting residue for 30 min has the best effect on the extraction of tin,antimony,barium and lead in gunshot residues.The results show that there are more gunshot residues on the thumb and index finger and palm,which provides a method for the investigation and identification of gun related cases.

关 键 词：射击残留物 特征元素 ICP-MS 

分 类 号：O657.63[理学—分析化学] TH843[理学—化学]