Improved method for the detection of TATP after explosion.
Improved method for the detection of TATP after explosion.
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DOI：
10.1520/jfs2003003
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发表时间：
2004-09
影响因子：
1.6
通讯作者：
D. Muller;A. Levy;R. Shelef;S. Abramovich-Bar;D. Sonenfeld;T. Tamiri
中科院分区：
文献类型：
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作者：
D. Muller;A. Levy;R. Shelef;S. Abramovich-Bar;D. Sonenfeld;T. Tamiri
据早先的报告，爆炸后展品中的TATP最好从气相中回收。一个典型的程序包括其吸附在Amberlite XAD-7上，用乙腈洗脱，并通过GC/MS分析。在这项工作中，提高回收率的TATP从气相中实现了SPME使用PDMS/DVB纤维和立即采样GC/MS。TATP的回收率通过SPME进行了比较，顶空和吸附在Amberlite XAD-7上，通过加标到滤纸上，放在一个100 mL烧杯。在这些条件下，TATP的检测限为6.4 ng，比其他测试方法高几个数量级。还研究了在各种溶剂存在下TATP的回收。发现丙酮、水和水：醇（1：1）的混合物降低TATP的回收率。使用固相微萃取，在几十个爆炸后的案例中发现了TATP。
TATP in post explosion exhibits was reported earlier to be best recovered from vapor phase. A typical procedure includes its adsorption on Amberlite XAD-7, elution with acetonitrile and analysis by GC/MS. In this work, improved recovery of TATP from the vapor phase was achieved by SPME using PDMS/DVB fiber and immediate sampling to GC/MS. The recovery of TATP by SPME was compared with headspace and with adsorption on Amberlite XAD-7 by spiking onto filter paper put in a 100 mL beaker. The limit of detection of TATP was 6.4 ng in these conditions, few orders magnitude more than in the other tested methods. Recovery of TATP in the presence of various solvents was also studied. Acetone, water, and mixtures of water:alcohols (1:1) were found to reduce the recovery of TATP. Using SPME, TATP has been identified in dozens of post-explosion cases.