| 同位素比值质谱法测定TNT的来源 |
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| 引用本文： | 汪聪慧,任玲,方家骏.同位素比值质谱法测定TNT的来源[J].质谱学报,2000,21(1):35-35. |
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| 作者姓名： | 汪聪慧 任玲 方家骏 |
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| 作者单位： | 1. 公安部物证鉴定中心,北京,100038
2. 菲尼根质谱公司,北京,100032 |
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| 摘 要： | 炸药的来源鉴别在犯罪案件尤其是爆炸案件的侦查有着重要的价值。本文首次报导利用同位素比值质谱法对四个不同厂家的 TNT,即硝铵炸药的主成份 ,进行 13C和 15N的同位素比值测定。初步的结果表明 ,( 1 )根据它们的同位素比值 ,可以区分这四个厂家的 TNT;( 2 )样品用量低于 1微克 ;( 3)利用 EA和GC二种进样方式 ,获得了平行一致的数据 ;( 4 ) 13C的测定精度± 0 .2 0‰ ,15N为± 0 .40～ 0 .50‰。
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| 关 键 词： | TNT 同位素比值质谱法 来源鉴别 |
| 收稿时间： | 1999-08-25 |
| 修稿时间： | 1999-08-25 |
Discrimination of the Source for TNT by IRMS |
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| Wang Cong hui,Ren Ling,Fang Jiajun.Discrimination of the Source for TNT by IRMS[J].Journal of Chinese Mass Spectrometry Society,2000,21(1):35-35. |
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| Authors: | Wang Cong hui Ren Ling Fang Jiajun |
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| Affiliation: | Wang Cong hui
,Ren Ling
(Institute of Forensic Science,Beijing 100038,China)Fang Jiajun
(Finnigan MAT Beijing Representative Office, Beijing 100032,China) |
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| Abstract: | The source discrimination of explosives has important value for the investigation of crime case,especially bombing case.In this paper we report that a new method,i、e、isotopic ratio mass spectrometry,was used for the isotopic ratio determination of TNT (a main component in nitramine explosives)which came from four manufacturers. The primary results show: (1) according to their isotopic ratios ( 13 C and 15 N),the manufacturers of origin can be distinguished each other,(2) the minimum consumable amount of sample was lower than l μg,(3) there were the pararell data in EA and GC inlet modes,(4)the measurement precision fell within ± 0 20‰ for 13 C,and ±0 40～0 50‰ fer 15 N. |
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| Keywords: | TNT IRMS |
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