实时直接分析-飞行时间质谱新技术在微量物证检验中的应用  

The Application of DART-TOFMS into Trace Evidence

作　　者：刘占芳[1] 周红[1] 孙振文[1] 朱军[1] 张冠男[1] 乔婷[1] 赵彦彪[1] 徐建中[1] 

机构地区：[1]公安部物证鉴定中心,北京100038

出　　处：《刑事技术》2017年第2期147-150,共4页Forensic Science and Technology

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(No.2014JB004;No.2013JBYY003);国家科技支撑计划项目(No.2012BAK02B04)

摘　　要：本文应用实时直接分析-飞行时间质谱(DART-TOFMS)新技术对法庭科学领域的爆炸残留物、动植物油脂、消字笔、印章等微量物证进行检验分析,实现了环境大气压状态下,气体、液体、固体和复杂基质表面的标志性化合物的直接分析。该技术突破了传统质谱分析的局限性,在物证检验鉴定方面更具优越性:①分析过程中无需前处理,减少了杂质干扰和样品损耗,提高了检验灵敏度和准确性;②不破坏检材,保存了物证鉴定中检材的完整性;③广谱性分析方法,得到更加丰富完善的数据信息,为后期质谱分析提供有力的数据支撑。因此,DART-TOFMS质谱分析新技术将成为未来法庭科学物证检验技术的一种新趋势。Direct analysis of real time coupled with time of flight mass spectrometer（DART-TOFMS） was here used for detection of trace evidence（explosive residues,animal/vegetable oil,erasing pen and signet）,having achieved immediate analysis to the samples carried with gas,liquid,solid and complex surfaces under the ambient atmospheric pressure.This new alternative breaks through the limitations of current mass spectral technology with its outstanding advantages：Without preprocessing,thereby avoiding the influence from foreign substances;No damage to the sample,thus the sample＇s integrity can be preserved;As a broad-spectrum detection,its data can be generated richer and more in-depth so that the following mass spectral analysis can get better support.DART-TOFMS is very likely to lead new trends in forensic science.

关 键 词：法庭科学 微量物证 DART-TOFMS 爆炸残留物 动植物油脂 消字笔 

分 类 号：DF794.3[政治法律—诉讼法学]