吸附/解吸气相色谱法对火焰残留物中助燃剂的保留指数进行了峰间比较

1993 Proceedings of IEEE International Carnahan Conference on Security Technology Pub Date : 1993-10-13 DOI:10.1109/CCST.1993.386818

W.-T. Chang, Y. Giang, C. Wang, C.-W. Huang

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引用次数: 2

摘要

作者提出了一种高效的样品制备方法和一种高鉴别的气相色谱(GC)方法，用于鉴定火渣中的促进剂。采用一种装有碳捕集器吸附管的净化捕集器对各种火渣中的促进剂进行了预浓缩。所得的样品管被提交到热解吸装置(TDU)，该装置连接到双宽孔毛细管柱GC。通过保留指数比较和色谱模式识别对助剂进行了鉴定。通过与炭管吸附/CS/sub - 2/萃取和连续蒸汽蒸馏等预处理工艺的比较，评价了该动态吸附/解吸工艺的优缺点。

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Adsorption/desorption GC assisted with retention index comparison of peaks for the identification of accelerants in fire residues

The authors present both an efficient sample preparation procedure and a highly discriminating gas chromatographic (GC) method for the identification of accelerants in fire residues. A purge-and-trap concentrator fitted with a carbotrap adsorbent tube was used to preconcentrate the accelerants from various fire residues. The resultant sample tubes were submitted to a thermal desorption unit (TDU) which was connected to a dual wide-bore capillary column GC. The identification of the accelerants was based on both a retention indices comparison and chromatogram pattern recognition. The advantages and disadvantages of this dynamic adsorption/desorption procedure were evaluated by comparison with other pretreatment procedures such as charcoal tube adsorption/CS/sub 2/ extraction and continuous steam distillation.<>

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来源期刊

1993 Proceedings of IEEE International Carnahan Conference on Security Technology

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