Coupling a Gas Chromatography Unit to an Inductively Coupled Plasma Mass Spectrometer

Jerrad P. Auxier, J. Auxier, H. Hall
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引用次数: 1

Abstract

Although the eminent threat of a terrorist group detonating an improvised nuclear device (IND) in an urban environment is low, it is crucial that countries develop modern nuclear forensic capabilities to expedite response in a post-detonation scenario. In particular, new instruments need to be created to shorten dissolution time, expedite chemical separation, and improve forensic analysis of the nuclear melt glass that is created during the detonation of the device. To expedite this process, an instrument was designed to thermally couple a gas chromatograph (GC) to a time-of-flight inductively coupled plasma time-of-flight mass spectrometer (ICPTOFMS) In order to couple these two instruments, another instrument was designed to provide an isothermal atmosphere between the GC and TOFICPMS to expedite rapid gas separations processes. By using gas separations instead of the current wet chemistry processes, the required separation and analysis time of the melt glass significantly decreases. The new instrument would also provide a more detailed analysis of the elemental and isotopic composition of the melt glass. By completing these tasks simultaneously, this significantly decreases the required time to conduct these separations and improves the elemental and isotopic analysis.
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气相色谱装置与电感耦合等离子体质谱仪的耦合
尽管恐怖组织在城市环境中引爆简易核装置的显著威胁很低,但各国必须发展现代核取证能力,以加快在爆炸后情况下的反应。特别是,需要制造新的仪器,以缩短溶解时间,加快化学分离,并改进对装置爆炸过程中产生的核熔融玻璃的法医分析。为了加快这一过程,设计了一种仪器将气相色谱仪(GC)与飞行时间电感耦合等离子体飞行时间质谱仪(ICPTOFMS)热耦合。为了耦合这两种仪器,设计了另一种仪器在气相色谱仪和TOFICPMS之间提供等温气氛,以加快快速气体分离过程。通过使用气体分离代替目前的湿法化学工艺,熔融玻璃所需的分离和分析时间显著减少。新仪器还将对熔融玻璃的元素和同位素组成进行更详细的分析。通过同时完成这些任务,这大大减少了进行这些分离所需的时间,并改进了元素和同位素分析。
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